1975, Cowl induction?
Thread Starter
Melting Slicks
Joined: Oct 2005
Posts: 2,056
Likes: 8
From: Redruth Cornwall
1975, Cowl induction?
Am not at home right now so cant get to my AIM.
Am at a friends and was showing him around the Vette ( 1975 ) and he saw a wire running up the hood and said it was for the cowl induction. He said at WOT, a solenoid should open a flap on the hood to allow the induction of cold air and also give a nice roar....
So, we go for a drive, I stamp on the go faster pedal and look through the screen at the underside of the hood....nothing.
Should the flap opening be visible whilst driving and do 75 Vettes have this as standard equiptment?
TIA.
Am at a friends and was showing him around the Vette ( 1975 ) and he saw a wire running up the hood and said it was for the cowl induction. He said at WOT, a solenoid should open a flap on the hood to allow the induction of cold air and also give a nice roar....
So, we go for a drive, I stamp on the go faster pedal and look through the screen at the underside of the hood....nothing.
Should the flap opening be visible whilst driving and do 75 Vettes have this as standard equiptment?
TIA.
Safety Car
Joined: Jun 2002
Posts: 4,135
Likes: 1
check the switch at the gas pedal, it did 2 things,,, kicked down the trans and opened the flapper at the cowl. the wires going up the side of the hood connect at a jack in the wiring harness at the frt headlight area,see if there's voltage at the sylonoid, if so and no open its a bad sylonoid-b t w i can see my cowl door open and close from the drivers seat,,but i dont have that cheesy screen installed-----------------
Melting Slicks
Joined: Mar 2002
Posts: 2,140
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From: Ohio
If you turn the key to the on position and push the gas pedal to the floor you will hear the door open if the system is working. If it does not open reach high on the gas pedal linkage and find the switch and push it all the way and see if it will clunk open. If this makes it work a piece of rubber hose on the switch rod is a quick fix.
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Thread Starter
Melting Slicks
Joined: Oct 2005
Posts: 2,056
Likes: 8
From: Redruth Cornwall
Carl A, I can see my flap...its all white from overspray but it doesnt move. Doesnt seem to have a screen over it...will check switch, wiring and solenoid.
Two things,
My Tranny seems to be kicking down with no problems...do all trannys use this WOT switch or is it only certain years? I thought it was vacuum controlled...
Secondly, At WOT, when the cowl does open....is there a really noticable roar that you can hear? Would love to get it working if thats the case.
TIA
Two things,
My Tranny seems to be kicking down with no problems...do all trannys use this WOT switch or is it only certain years? I thought it was vacuum controlled...
Secondly, At WOT, when the cowl does open....is there a really noticable roar that you can hear? Would love to get it working if thats the case.
TIA
Melting Slicks
Joined: Mar 2002
Posts: 2,140
Likes: 7
From: Ohio
Jotto
If the kickdown on your turbo 400 works you may have a loose plug under the dash not hooked up. On automatic cars the wires for the flapper were hooked to the switch on the pedal first then the kickdown wires plugged into the flapper conector. The kickdown wire will plug directly to the switch and work so look for the plug with male and female ends for the hood solinoid and see if it is conected. I forgot to plug this wire in when I put the dash in and it took some time to find the problem.
Lyle
If the kickdown on your turbo 400 works you may have a loose plug under the dash not hooked up. On automatic cars the wires for the flapper were hooked to the switch on the pedal first then the kickdown wires plugged into the flapper conector. The kickdown wire will plug directly to the switch and work so look for the plug with male and female ends for the hood solinoid and see if it is conected. I forgot to plug this wire in when I put the dash in and it took some time to find the problem.
Lyle
Thread Starter
Melting Slicks
Joined: Oct 2005
Posts: 2,056
Likes: 8
From: Redruth Cornwall
Thats what I want....I have the stock air cleaner etc that seals to the hood so going to see whats wrong with my setup.
Thanks all!
