TI box 1965
Hey guys, need a little help with a TI box. car just stop running and would not start. does anyone have trouble tree. I need to know how to test the box. voltage or ohms for each wire. thanks for your help
Bruce
Bruce
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Re: TI box 1965
Bruce, Are you sure it's Ignition?
Is your TI box original Delco circuit board? Or upgraded to the newer type module? (M&H or K&B). Remember that if it's the original Delco type only pull 1 plug wire to test spark.
There is a Service doc in the above Sticky which may help diagnose.....(64-65 same)
There is a diagnostic flowchart on page 5.
There are many things that could cause a no spark(if you're convinced that is the issue). Ensure you get 12V at the Pink/Blk going into the TI harness with Ign on. If good.....
Other TI Common issues :
- Poor connections at the 3 prong plug to the box. Sometimes the internal terminals in the harness plug can move causing a fault.
- Open grounds. The '65 mounts the box to the core support. Make sure the grounds are clean and tight.
- The distributor Pickup Coil 2 prong harness at the distributor is another common failure. The wires going into the distributor can become brittle and break. A ohms test of the PU coil(unplugged) should read in the ~500 to ~700 ohm range. Best to use clips on your meter then wiggle the wires to ensure solid contact with no intermittent readings, however it'll fluctuate a small amount.
- Ensure you're getting full Bat+ during crank at the Pink/Blk. This comes from a separate wire from Starter Solenoid R terminal. This maintains proper voltage at the TI box and PU Coil during crank. (nothing to do with Ign Coil+)
- Ensure you're battery is at full capacity. Low cranking voltage can prevent TI operation.
Rich -
Re: TI box 1965
Richard, thank you. Good info
BruceComment
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Re: TI box 1965
Delco-Remy service bulletin 1D-155 (dated 7-1-65) If you can pull off internet should also help.Comment
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Re: TI box 1965
David, I found it here...
If Bruce's TI box has the original circuit board, yes this is a good aid. If he has the upgraded circuit board some info won't apply as the circuit components are different.
However, basic tests would apply.
RichComment
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Re: TI box 1965
Rich, thanks for the input. This TI box was replaced 2 years ago with a new one from M and H. Does this change the testing procedure?
BruceComment
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Re: TI box 1965
Bruce, Not positive about the M&H but I think most of the voltages in the flowchart should be the same.
The circuit components are very different so anything related to testing transistors and internal devices will not apply.
Just remember you need a fully charged battery and good grounds for accurate tests.
The distributor PU Coil doesn't care which module is there so that test result should always be in the 500-700 ohm range with it disconnected from the plug.
RichComment
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Re: TI box 1965
Rich, Thanks for your help. It was the TI box which BTW was replaced a couple of years ago with an M&H box. Seems strange it could go bad that soon?
BruceComment
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Re: TI box 1965
Bruce how did you determine it was the M&H module? Did you have another one to replace it?
RichComment
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Re: TI box 1965
Rich, I know it was an M&H because the former owner told me he replaced the box about a year before I bought the car. I did not have another one. I borrowed one from a friend and the car fired right up!! I ordered a new box from Zip products. It is a Delco. A big question here is what causes a box to go bad??
BruceComment
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Re: TI box 1965
Bruce glad you got it diagnosed. Good you were able to borrow one.
Why it failed? Electronics fails some times.
BTW, If you got the Zip complete module(box and circuit board), yes it's a Delco on the outside, but it includes the K&B circuit board inside, which IMO is a better product. FYI, you could have ordered just the K&B circuit board and swapped it out also.
RichComment
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