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2007 Z-06 Issues

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  • Jimmy G.
    Very Frequent User
    • November 1, 1979
    • 976

    2007 Z-06 Issues

    I have a low mile 2007 Z-06 that is running like dog poop. Is their a area where these engines tend to have issues, like coil packs, injectors, or computer issues?? It drives but not very well. Thought it was stale gas but after going to 'Low Fuel" twice and adding 2 gallons each time, I am convinced the gas is not an issue. Any advice from your history??
    Founder - Carolinas Chapter NCRS
  • Frank D.
    Expired
    • December 27, 2007
    • 2703

    #2
    Re: 2007 Z-06 Issues

    Don't virtually all American cars since 2001 have an OBDC port ? Get a scanner and see what codes it throws...
    I personally like the Blue Driver: https://www.amazon.com/BlueDriver-Bl...4936257&sr=8-1

    Not cheap but, its backed up by a cloud database that decodes any errors and reports back on the problem and typical things that fixed the issue for your SPECIFIC car. It works well for my fleet of cars...

    Comment

    • Rich G.
      Extremely Frequent Poster
      • August 31, 2002
      • 1397

      #3
      1966 L79 Convertible. Milano Maroon
      1968 L71 Coupe. Rally Red (Sold 6/21)
      1963 Corvair Monza Convertible

      Comment

      • Ken R.
        Very Frequent User
        • August 31, 1980
        • 305

        #4
        Re: 2007 Z-06 Issues

        https://www.corvetteforum.com/forums...her-issue.html
        seems MAP sensor can do the rough engine from this post. See what codes it may be storing. Have fun.

        Comment

        • Mark E.
          Extremely Frequent Poster
          • April 1, 1993
          • 4536

          #5
          Re: 2007 Z-06 Issues

          Can you be more specific about the symptoms other than "running like dog poop"?
          Mark Edmondson
          Dallas, Texas
          Texas Chapter

          1970 Coupe, Donnybrooke Green, Light Saddle LS5 M20 A31 C60 G81 N37 N40 UA6 U79
          1993 Coupe, 40th Anniversary, 6-speed, PEG 1, FX3, CD, Bronze Top

          Comment

          • Keith B.
            Extremely Frequent Poster
            • September 15, 2014
            • 1582

            #6
            Re: 2007 Z-06 Issues

            Originally posted by Frank Dreano (48332)
            Don't virtually all American cars since 2001 have an OBDC port ? Get a scanner and see what codes it throws...
            I personally like the Blue Driver: https://www.amazon.com/BlueDriver-Bl...4936257&sr=8-1

            Not cheap but, its backed up by a cloud database that decodes any errors and reports back on the problem and typical things that fixed the issue for your SPECIFIC car. It works well for my fleet of cars...
            since about 1980 any computer controlled engine management system had a port. By the early 90’s they got better

            Comment

            • Jimmy G.
              Very Frequent User
              • November 1, 1979
              • 976

              #7
              Re: 2007 Z-06 Issues

              Runs very rough Kinda like a 427 with 2 crossed plug wires
              Founder - Carolinas Chapter NCRS

              Comment

              • Jimmy G.
                Very Frequent User
                • November 1, 1979
                • 976

                #8
                Re: 2007 Z-06 Issues

                Ordered a Scan Tool Thanks for all the advise Will reply when it is fixed (if it is)
                Founder - Carolinas Chapter NCRS

                Comment

                • Gary J.
                  Extremely Frequent Poster
                  • April 1, 1980
                  • 1241

                  #9
                  Re: 2007 Z-06 Issues

                  Good thing you were not driving it on the Road Tour.

                  Comment

                  • John D.
                    Very Frequent User
                    • June 30, 1991
                    • 875

                    #10
                    Re: 2007 Z-06 Issues

                    Some very general info from the service manual

                    Symptoms - Engine Controls
                    Diagnostic Instructions
                    Symptoms DescriptionSymptoms cover conditions that are not covered DTCs. Certain conditions can cause multiple symptoms. These conditions are listed together under Symptoms Testing. Conditions that may only cause certain symptoms are listed separately under Additional Symptoms Test. Perform the Symptoms Testing before using the Additional Symptoms Tests. Poor Fuel Fill Quality test may be performed separately from the Symptoms Testing and Additional Symptoms Tests procedures.
                    Symptoms DefinitionBackfireFuel ignites in the intake manifold or in the exhaust system, making a loud popping noise.
                    Cuts Out, MissesA steady pulsation or jerking that follows engine speed, which is usually more pronounced as the engine load increases. This condition is not normally felt above 1500 RPM or 48 km/h (30 mph). The exhaust has a steady spitting sound at idle or at low speed.
                    Detonation/Spark KnockA mild to severe ping which usually occurs worse while under acceleration. The engine makes sharp metallic knocks that change with throttle opening.
                    Dieseling, Run-OnThe engine continues to run after the key is turned OFF, but runs very rough.
                    Hard StartEngine cranks OK, but does not start for a long time. The vehicle does eventually run, or may start but immediately stalls.
                    Hesitation, Sag, StumbleMomentary lack of response as the accelerator is pushed down. This condition can occur at any vehicle speed. This condition is usually more pronounced when first trying to make the vehicle move, as from a stop. This condition may cause the engine to stall in severe conditions.

                    Lack of Power, Sluggishness, or SponginessThe engine delivers less than expected power. Little or no increase in speed when the accelerator pedal is pushed down part way.

                    Poor Fuel EconomyFuel economy, as measured by an actual road test, is noticeably lower than expected. Also, the fuel economy is noticeably lower than it was on this vehicle at one time, as previously shown by an actual road test.
                    Poor Fuel Fill QualityDifficulty when refueling the vehicle.

                    Rough, Unstable, or Incorrect Idle and StallingThe engine runs unevenly at idle. If severe, the engine or the vehicle may shake. Engine idle may vary in speed. Either condition may be severe enough to stall the engine.

                    Surges/ChugglesEngine power variation under steady throttle or cruise. Feels like the vehicle speeds up and slows down with no change in the accelerator pedal position.

                    Symptoms VerificationBefore using the Symptom tables, perform the following inspections:
                    • Ensure that the engine control module (ECM) and malfunction indicator lamp (MIL) are operating correctly.
                    • Ensure that there are no diagnostic trouble codes (DTCs) that are stored.
                    • Ensure that the scan tool data is within a normal operating range.
                    • Verify the customer concern.
                    • Perform the Visual/Physical Inspection in this section. The visual/physical inspection is extremely important, and can lead to correcting a condition without additional testing. It may also help reveal the cause of an intermittent condition.

                    Identifying Intermittent Conditions
                    Many intermittent conditions occur with harness or connector movement due to engine torque, rough pavement, vibration or physical movements of a component. Refer to the following for a list of issues that may cause an intermittent condition:

                    Visual/Physical Check
                    • Ensure that the control module grounds are clean, tight, and correctly located. Refer to and .
                    • Ensure that the vacuum hoses are not split, kinked, and properly connected, as shown on the Vehicle Emission Control Information label. Refer to Emission Hose Routing Diagram. Refer to .
                    • Ensure that the air filter is clean and free from restrictions.
                    • Ensure that there is no water intrusion in connectors terminals and components.
                    • Inspect the air intake ducts for the following conditions:
                      • Collapsed
                      • Damaged areas
                      • Looseness
                      • Incorrect installation
                      • Leaking

                    • Inspect for air leaks at the throttle body mounting area, the mass air flow (MAF) sensor and intake manifold sealing surfaces.
                    • Inspect the wiring harness for the following conditions:
                      • Poor connections
                      • Pinches
                      • Cuts

                    • Inspect for loose, damaged, unseated, or missing sensors/components.
                    • Inspect the terminals for corrosion and correct contact.

                    Symptoms TestingBackfire, Cuts Out/Misses, Detonation/Spark Knock, Dieseling/Run-On, Hard Start, Hesitation/Sag/Stumble, Lack of Power/Sluggishness/Sponginess, Poor Fuel Economy, Rough, Unstable, or Incorrect Idle and Stalling, or Surges/Chuggles

                    Additional Symptoms TestsDetonation/Spark KnockTest the engine for an overheating condition. Refer to Symptoms - Engine Cooling.
                    Poor Fuel EconomyInspect for foreign material accumulation in the throttle bore, and for carbon deposits on the throttle plate and shaft. Also inspect for throttle body tampering.
                    Rough, Unstable, or Incorrect Idle and StallingInspect the engine mounts.
                    Surges/ChugglesTest the HO2S. The HO2S should respond quickly to a change in throttle position. If the HO2S do not respond to different throttle positions, inspect for contamination from fuel, silicon, or the incorrect use of RTV sealant. The sensors may have a white powdery coating and result in a high, but false, signal voltage, which gives a rich exhaust indication. The ECM reduces the amount of fuel delivered to the engine, causing a driveability condition.
                    Hard Start
                    Hesitation, Sag, Stumble
                    • Test the manifold absolute pressure (MAP) sensor. Refer to DTC P0106.
                    • Test the generator. Refer to Symptoms - Engine Electrical. Repair the charging system if the generator output voltage is less than 9 volts or more than 16 volts.

                    Poor Fuel Economy
                    • Heavy loads being carried or towed.
                    • Acceleration rate too much or too often.
                    • Inspect for foreign material accumulation in the throttle bore, and for carbon deposits on the throttle plate and shaft. Also inspect for throttle body tampering.

                    Poor Fuel Fill QualityTest for the following conditions that is applicable to the current symptom.
                    Difficult to fill
                    Fuel Odor

                    [/COLOR]

                    Comment

                    • Tom L.
                      Extremely Frequent Poster
                      • October 17, 2006
                      • 1439

                      #11
                      Re: 2007 Z-06 Issues

                      Finding codes will be very useful. Be cautious if the code points to a part. I threw a P2138 in my 2013 GS, Accelerator pedal sensor issue, car was in limp mode and replaced the pedal. Not the problem. The root issue was simply a dirty connector in the engine compartment. Took it apart, sprayed it with electrical cleaner, put dielectric grease on the gasket only and put it together. Problem solved. Simple but annoying.

                      Comment

                      • Dick W.
                        Former NCRS Director Region IV
                        • June 30, 1985
                        • 10483

                        #12
                        Re: 2007 Z-06 Issues

                        Originally posted by John Daly (19684)
                        Some very general info from the service manual

                        Symptoms - Engine Controls
                        Diagnostic Instructions
                        Symptoms DescriptionSymptoms cover conditions that are not covered DTCs. Certain conditions can cause multiple symptoms. These conditions are listed together under Symptoms Testing. Conditions that may only cause certain symptoms are listed separately under Additional Symptoms Test. Perform the Symptoms Testing before using the Additional Symptoms Tests. Poor Fuel Fill Quality test may be performed separately from the Symptoms Testing and Additional Symptoms Tests procedures.
                        Symptoms DefinitionBackfireFuel ignites in the intake manifold or in the exhaust system, making a loud popping noise.
                        Cuts Out, MissesA steady pulsation or jerking that follows engine speed, which is usually more pronounced as the engine load increases. This condition is not normally felt above 1500 RPM or 48 km/h (30 mph). The exhaust has a steady spitting sound at idle or at low speed.
                        Detonation/Spark KnockA mild to severe ping which usually occurs worse while under acceleration. The engine makes sharp metallic knocks that change with throttle opening.
                        Dieseling, Run-OnThe engine continues to run after the key is turned OFF, but runs very rough.
                        Hard StartEngine cranks OK, but does not start for a long time. The vehicle does eventually run, or may start but immediately stalls.
                        Hesitation, Sag, StumbleMomentary lack of response as the accelerator is pushed down. This condition can occur at any vehicle speed. This condition is usually more pronounced when first trying to make the vehicle move, as from a stop. This condition may cause the engine to stall in severe conditions.

                        Lack of Power, Sluggishness, or SponginessThe engine delivers less than expected power. Little or no increase in speed when the accelerator pedal is pushed down part way.

                        Poor Fuel EconomyFuel economy, as measured by an actual road test, is noticeably lower than expected. Also, the fuel economy is noticeably lower than it was on this vehicle at one time, as previously shown by an actual road test.
                        Poor Fuel Fill QualityDifficulty when refueling the vehicle.

                        Rough, Unstable, or Incorrect Idle and StallingThe engine runs unevenly at idle. If severe, the engine or the vehicle may shake. Engine idle may vary in speed. Either condition may be severe enough to stall the engine.

                        Surges/ChugglesEngine power variation under steady throttle or cruise. Feels like the vehicle speeds up and slows down with no change in the accelerator pedal position.

                        Symptoms VerificationBefore using the Symptom tables, perform the following inspections:
                        • Ensure that the engine control module (ECM) and malfunction indicator lamp (MIL) are operating correctly.
                        • Ensure that there are no diagnostic trouble codes (DTCs) that are stored.
                        • Ensure that the scan tool data is within a normal operating range.
                        • Verify the customer concern.
                        • Perform the Visual/Physical Inspection in this section. The visual/physical inspection is extremely important, and can lead to correcting a condition without additional testing. It may also help reveal the cause of an intermittent condition.

                        Identifying Intermittent Conditions
                        Many intermittent conditions occur with harness or connector movement due to engine torque, rough pavement, vibration or physical movements of a component. Refer to the following for a list of issues that may cause an intermittent condition:

                        Visual/Physical Check
                        • Ensure that the control module grounds are clean, tight, and correctly located. Refer to and .
                        • Ensure that the vacuum hoses are not split, kinked, and properly connected, as shown on the Vehicle Emission Control Information label. Refer to Emission Hose Routing Diagram. Refer to .
                        • Ensure that the air filter is clean and free from restrictions.
                        • Ensure that there is no water intrusion in connectors terminals and components.
                        • Inspect the air intake ducts for the following conditions:
                          • Collapsed
                          • Damaged areas
                          • Looseness
                          • Incorrect installation
                          • Leaking

                        • Inspect for air leaks at the throttle body mounting area, the mass air flow (MAF) sensor and intake manifold sealing surfaces.
                        • Inspect the wiring harness for the following conditions:
                          • Poor connections
                          • Pinches
                          • Cuts

                        • Inspect for loose, damaged, unseated, or missing sensors/components.
                        • Inspect the terminals for corrosion and correct contact.

                        Symptoms TestingBackfire, Cuts Out/Misses, Detonation/Spark Knock, Dieseling/Run-On, Hard Start, Hesitation/Sag/Stumble, Lack of Power/Sluggishness/Sponginess, Poor Fuel Economy, Rough, Unstable, or Incorrect Idle and Stalling, or Surges/Chuggles

                        Additional Symptoms TestsDetonation/Spark KnockTest the engine for an overheating condition. Refer to Symptoms - Engine Cooling.
                        Poor Fuel EconomyInspect for foreign material accumulation in the throttle bore, and for carbon deposits on the throttle plate and shaft. Also inspect for throttle body tampering.
                        Rough, Unstable, or Incorrect Idle and StallingInspect the engine mounts.
                        Surges/ChugglesTest the HO2S. The HO2S should respond quickly to a change in throttle position. If the HO2S do not respond to different throttle positions, inspect for contamination from fuel, silicon, or the incorrect use of RTV sealant. The sensors may have a white powdery coating and result in a high, but false, signal voltage, which gives a rich exhaust indication. The ECM reduces the amount of fuel delivered to the engine, causing a driveability condition.
                        Hard Start
                        Hesitation, Sag, Stumble
                        • Test the manifold absolute pressure (MAP) sensor. Refer to DTC P0106.
                        • Test the generator. Refer to Symptoms - Engine Electrical. Repair the charging system if the generator output voltage is less than 9 volts or more than 16 volts.

                        Poor Fuel Economy
                        • Heavy loads being carried or towed.
                        • Acceleration rate too much or too often.
                        • Inspect for foreign material accumulation in the throttle bore, and for carbon deposits on the throttle plate and shaft. Also inspect for throttle body tampering.

                        Poor Fuel Fill QualityTest for the following conditions that is applicable to the current symptom.
                        Difficult to fill
                        Fuel Odor

                        [/COLOR]
                        You sir, are a life saver to the owners of newer cars. I will thank you for them.
                        Dick Whittington

                        Comment

                        • Jimmy G.
                          Very Frequent User
                          • November 1, 1979
                          • 976

                          #13
                          Re: 2007 Z-06 Issues

                          Thanks

                          What a lot of information to start with.

                          Guess if I am going to keep the car I need to find a service manual
                          Founder - Carolinas Chapter NCRS

                          Comment

                          • Dick W.
                            Former NCRS Director Region IV
                            • June 30, 1985
                            • 10483

                            #14
                            Re: 2007 Z-06 Issues

                            Originally posted by John Daly (19684)
                            Some very general info from the service manual

                            Symptoms - Engine Controls
                            Diagnostic Instructions
                            Symptoms DescriptionSymptoms cover conditions that are not covered DTCs. Certain conditions can cause multiple symptoms. These conditions are listed together under Symptoms Testing. Conditions that may only cause certain symptoms are listed separately under Additional Symptoms Test. Perform the Symptoms Testing before using the Additional Symptoms Tests. Poor Fuel Fill Quality test may be performed separately from the Symptoms Testing and Additional Symptoms Tests procedures.
                            Symptoms DefinitionBackfireFuel ignites in the intake manifold or in the exhaust system, making a loud popping noise.
                            Cuts Out, MissesA steady pulsation or jerking that follows engine speed, which is usually more pronounced as the engine load increases. This condition is not normally felt above 1500 RPM or 48 km/h (30 mph). The exhaust has a steady spitting sound at idle or at low speed.
                            Detonation/Spark KnockA mild to severe ping which usually occurs worse while under acceleration. The engine makes sharp metallic knocks that change with throttle opening.
                            Dieseling, Run-OnThe engine continues to run after the key is turned OFF, but runs very rough.
                            Hard StartEngine cranks OK, but does not start for a long time. The vehicle does eventually run, or may start but immediately stalls.
                            Hesitation, Sag, StumbleMomentary lack of response as the accelerator is pushed down. This condition can occur at any vehicle speed. This condition is usually more pronounced when first trying to make the vehicle move, as from a stop. This condition may cause the engine to stall in severe conditions.

                            Lack of Power, Sluggishness, or SponginessThe engine delivers less than expected power. Little or no increase in speed when the accelerator pedal is pushed down part way.

                            Poor Fuel EconomyFuel economy, as measured by an actual road test, is noticeably lower than expected. Also, the fuel economy is noticeably lower than it was on this vehicle at one time, as previously shown by an actual road test.
                            Poor Fuel Fill QualityDifficulty when refueling the vehicle.

                            Rough, Unstable, or Incorrect Idle and StallingThe engine runs unevenly at idle. If severe, the engine or the vehicle may shake. Engine idle may vary in speed. Either condition may be severe enough to stall the engine.

                            Surges/ChugglesEngine power variation under steady throttle or cruise. Feels like the vehicle speeds up and slows down with no change in the accelerator pedal position.

                            Symptoms VerificationBefore using the Symptom tables, perform the following inspections:
                            • Ensure that the engine control module (ECM) and malfunction indicator lamp (MIL) are operating correctly.
                            • Ensure that there are no diagnostic trouble codes (DTCs) that are stored.
                            • Ensure that the scan tool data is within a normal operating range.
                            • Verify the customer concern.
                            • Perform the Visual/Physical Inspection in this section. The visual/physical inspection is extremely important, and can lead to correcting a condition without additional testing. It may also help reveal the cause of an intermittent condition.

                            Identifying Intermittent Conditions
                            Many intermittent conditions occur with harness or connector movement due to engine torque, rough pavement, vibration or physical movements of a component. Refer to the following for a list of issues that may cause an intermittent condition:

                            Visual/Physical Check
                            • Ensure that the control module grounds are clean, tight, and correctly located. Refer to and .
                            • Ensure that the vacuum hoses are not split, kinked, and properly connected, as shown on the Vehicle Emission Control Information label. Refer to Emission Hose Routing Diagram. Refer to .
                            • Ensure that the air filter is clean and free from restrictions.
                            • Ensure that there is no water intrusion in connectors terminals and components.
                            • Inspect the air intake ducts for the following conditions:
                              • Collapsed
                              • Damaged areas
                              • Looseness
                              • Incorrect installation
                              • Leaking

                            • Inspect for air leaks at the throttle body mounting area, the mass air flow (MAF) sensor and intake manifold sealing surfaces.
                            • Inspect the wiring harness for the following conditions:
                              • Poor connections
                              • Pinches
                              • Cuts

                            • Inspect for loose, damaged, unseated, or missing sensors/components.
                            • Inspect the terminals for corrosion and correct contact.

                            Symptoms TestingBackfire, Cuts Out/Misses, Detonation/Spark Knock, Dieseling/Run-On, Hard Start, Hesitation/Sag/Stumble, Lack of Power/Sluggishness/Sponginess, Poor Fuel Economy, Rough, Unstable, or Incorrect Idle and Stalling, or Surges/Chuggles

                            Additional Symptoms TestsDetonation/Spark KnockTest the engine for an overheating condition. Refer to Symptoms - Engine Cooling.
                            Poor Fuel EconomyInspect for foreign material accumulation in the throttle bore, and for carbon deposits on the throttle plate and shaft. Also inspect for throttle body tampering.
                            Rough, Unstable, or Incorrect Idle and StallingInspect the engine mounts.
                            Surges/ChugglesTest the HO2S. The HO2S should respond quickly to a change in throttle position. If the HO2S do not respond to different throttle positions, inspect for contamination from fuel, silicon, or the incorrect use of RTV sealant. The sensors may have a white powdery coating and result in a high, but false, signal voltage, which gives a rich exhaust indication. The ECM reduces the amount of fuel delivered to the engine, causing a driveability condition.
                            Hard Start
                            Hesitation, Sag, Stumble
                            • Test the manifold absolute pressure (MAP) sensor. Refer to DTC P0106.
                            • Test the generator. Refer to Symptoms - Engine Electrical. Repair the charging system if the generator output voltage is less than 9 volts or more than 16 volts.

                            Poor Fuel Economy
                            • Heavy loads being carried or towed.
                            • Acceleration rate too much or too often.
                            • Inspect for foreign material accumulation in the throttle bore, and for carbon deposits on the throttle plate and shaft. Also inspect for throttle body tampering.

                            Poor Fuel Fill QualityTest for the following conditions that is applicable to the current symptom.
                            Difficult to fill
                            Fuel Odor

                            [/COLOR]
                            You sir, are a life saver to the owners of newer cars. I will thank you for them.
                            Dick Whittington

                            Comment

                            • Paul D.
                              Very Frequent User
                              • September 30, 1996
                              • 491

                              #15
                              Re: 2007 Z-06 Issues

                              Jimmy, when my TBSS gets a "extra lopey" idle, I run a can of SeaFoam fuel additive in a tank (or sometimes 1/2 tank) of gas and it usually clears it up. May be injector sticking. Try a can and try driving a little aggressive for a few miles. I know that will be difficult for you as I know how careful a driver you are but just force yourself. If you have the car down here in SC, give me a call. I have one of those scan tools I've never used. Most of my junk you still just tap on the side of the carb when it starts that. Not a good practice when working with electronics. Chip.

                              Comment

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