1964 1965 power rear vent.

[Bruce B.]

I went and looked at a 65 coupe original air conditioned and I could not find the pull knob to turn on the rear power vent.
Should it be present on a air car?

Was the power vent used in both 1964 and 1965?

Thanks.

[Joe L.]

Re: 1964 1965 power rear vent.

I went and looked at a 65 coupe original air conditioned and I could not find the pull knob to turn on the rear power vent.
Should it be present on a air car?

Was the power vent used in both 1964 and 1965?

Thanks.

Bruce------


The power rear vent was used on both 1964 and 1964 coupes. As I recall, it was not installed on C-60 cars.

[Wayne M.]

Re: 1964 1965 power rear vent.

.... The power rear vent was used on both 1964 and 1964 coupes. As I recall, it was not installed on C-60 cars.

Bruce --- I'm sure Joe L. meant to say both '64 and '65 coupes. But yes, they should be present on coupes with and without C60. With air, there was a wiring interconnect that started the rear blower (low speed) when the A/C knob was pulled, even though the blower switch (lower left of the clock) was OFF.

Because the under-dash ducting required that the headlight up/down roll switch move inboard towards the steering column, that forced the left hand kick-pad vent cable to the right of the steering. So, where to put the "luggage compartment exhaust fan" cable/control ? Answer: to the extreme right of the control panel, under the ignition key.

Now there is a situation where no rear blower is present on '64 and '65 coupes, and that's when the big tank was selected.

[John H.]

Re: 1964 1965 power rear vent.

With air, there was a wiring interconnect that started the rear blower (low speed) when the A/C knob was pulled, even though the blower switch (lower left of the clock) was OFF.

Wayne -

I think you'll find that there was no interconnect that ran the rear blower when the A/C knob was pulled; the coupe rear blower lo-med-hi blower speed switch, mounted on the rear blower housing, was mechanically operated by the rear blower cable, and that speed switch wasn't activated until the rear blower cable was first pulled out to the first detent (initial cable pull prior to the detent opened the flap in the blower housing to the exhaust duct). The only electrical interconnect from the coupe rear exhaust blower was to the heater/AC blower switch on the dash, which killed power to the rear blower motor brown wire if the heater/AC blower switch was turned on (in either heat or A/C mode) so the rear blower was inoperable if the heater/AC fan was running.

[Don H.]

Re: 1964 1965 power rear vent.

John, I am very hesitant to disagree but I do (disagree). If my memory serves me right (which is a scary proposition) there IS an a way to run the AC on a 64-65 coupe with AC and the power vent. If you turn on the air conditioning, it automatically turns on the low fan to run the AC. The fan is turned off if you turn on the power vent (through the wiring) but it still runs on an air conditoned 64-65 coupe provided the fan switch is off. If you try to run the fan at any setting higher than "off" (remember the fan is already on low speed by switching the air on) then the air conditioning will not work. I hope this is accurate as it IS very late. Don H.

[Bruce B.]

Re: 1964 1965 power rear vent.

The 65 Corvette Owners Guide states that "the exhaust fan will not run when the heater fan is being used".

I don't know if this is true when the AC fan (same blower as heat) is running??

No other info except how to turn on the vent blower.

[Don H.]

Re: 1964 1965 power rear vent.

I should not post after 9pm, I did not correctly say what I meant. The power to the power vent in a 64-65 coupe is routed throught the heater (and AC if so equipped) fan switch. When the fan is turned on, that cuts the power going to the vent. If you pull the AC on lever, that turns on the air conditioning and turns on the fan to low without touching the fan switch. Thus there is still power going to the vent and it would run with the AC on low. If while running the AC you turn the fan switch to get a higher flow of air, you will turn the power vent off. I hope this is a better explanation. Don H.

[John H.]

Re: 1964 1965 power rear vent.

I should not post after 9pm, I did not correctly say what I meant. The power to the power vent in a 64-65 coupe is routed throught the heater (and AC if so equipped) fan switch. When the fan is turned on, that cuts the power going to the vent. If you pull the AC on lever, that turns on the air conditioning and turns on the fan to low without touching the fan switch. Thus there is still power going to the vent and it would run with the AC on low. If while running the AC you turn the fan switch to get a higher flow of air, you will turn the power vent off. I hope this is a better explanation. Don H.

Don -

That's correct - with the A/C on and its blower switch in the "off" position, there's still power to the coupe rear blower through the brown wire (until the A/C blower switch is moved from the "off" position), but the rear blower won't run unless you actually pull the rear blower control cable past the first detent and engage the rear blower switch by further progressively pulling on the cable to the lo-med-hi switch positions. Nothing turns the coupe rear blower on when the A/C is turned on unless the rear blower cable is already pulled out to one of its switch positions; if the rear blower is turned off, turning the A/C on won't turn it on.

[Don H.]

Re: 1964 1965 power rear vent.

John, As always, you are correct. Don H.

[Bruce B.]

Re: 1964 1965 power rear vent.

Thanks for all the replies and the info.

Bruce B