1974 Hood induction

[Guenter J.]

I restored the hood induction and tested the solenoid. The fresh air inlet opens nicely when I activate the solenoid directly. But it does not activate when I hit the accelerator. Any help. Thanks, Guenter

[Michael W.]

Re: 1974 Hood induction

Re-set the switch under the gas pedal by pulling the plunger rearwards

[Guenter J.]

Re: 1974 Hood induction

Will give it a try, thankyou , Guenter

[Guenter J.]

Re: 1974 Hood induction

tried pulling it rearward. It looks like a tan dowel and it moves freely. Fuse panel checks out well. Any other ideas.

[Terry M.]

Re: 1974 Hood induction

Check the switch electrically with a meter. Try activating it with your finger. The circuit is very simple. Fuse to switch to solenoid to ground. I suppose there is a place where the wire goes through the panel between the engine and interior. You will have to look for that if your tests indicate a wire problem. A test light or meter ought to identify the problem quickly.

[Michael W.]

Re: 1974 Hood induction

tried pulling it rearward. It looks like a tan dowel and it moves freely. Fuse panel checks out well. Any other ideas.

If it moves freely front to rear with no activation of the solenoid (ignition on of course) check the switch electrically for continuityas Terry suggests.

Have you verifies the wiring running along the hood and connector?

[Harmon C.]

Re: 1974 Hood induction

I restored the hood induction and tested the solenoid. The fresh air inlet opens nicely when I activate the solenoid directly. But it does not activate when I hit the accelerator. Any help. Thanks, Guenter

A piece of rubber hose of the correct ID sliped over the switch arm will usally make the switch work until you learn how to reset it.

[Joel A.]

Re: 1974 Hood induction

The switch is adjustable, if the hose doesn't help. I've had a section of hose on mine for years, until a few days ago(what? I'm lazy!! LOL). I finally crawled under there and reset the switch, and removed the hose!
To adjust, all you do is push forward(toward the accelerator pedal) on the "dowel" that hits the accelerator pedal. You'll have to push fairly hard, so push as close to the switch as possible, to keep from breaking the dowel end off. It will make a loud, ratcheting noise when it moves. This will re-set the switch, and the cowl door will now work properly, if all is right electrically.

[Guenter J.]

Re: 1974 Hood induction

Thanks for your responses. I pushed switch rearward, I checked with test light at the switch. All is go. The solenoid works directly. SO, the wiring between the switch and solenoid must be at fault.

[Guenter J.]

Re: 1974 Hood induction

All is working on my hood induction. Thankyou. Last question, when does the switch reseat itself? Everything works nice , only when you push switch rearward manually.

[Joel A.]

Re: 1974 Hood induction

....when does the switch reseat itself

The switch will not set itself...you must do it manually, by pushing the rod/dowel forward until it clicks/moves. This only moves the internals of the switch, not the mount, or the outside shell. You will have to push it hard to get it to move, but it will move.

[Guenter J.]

Re: 1974 Hood induction

Dear Joel,

You are amazing. Thanks for great photo . Case is complete. Thanks for the education. Guenter

[Harmon C.]

Re: 1974 Hood induction

Their is one other thing you should check. If you have an automatic trasmission the wiring to the switch needs two plugs attached. One has both male and female ends to make the kickdown for the trans and the hood flapper work with the same switch. Four speeds have just one plug.

[Guenter J.]

Re: 1974 Hood induction

Dear Lyle,

I have an automatic and 2 plugs. All is well. Thanks again for your time and effort. Guenter