[GPMESQ]

What GTO in 1969 would have come with an idle stop solenoid?

How does it work?

Is this correct:

http://cgi.ebay.com/ws/eBayISAPI.dll...tchlink:top:en

[7T-GOAT]

I believe it is correct for the following: 1968 GTO/Firebird...1969-1970 GTO/Firebird Ram Air IV and 1971 GTO/Firebird with 4 bbl carb and manual transmission.

My pictures are of a original GM part. So, reproduction looks to be a good copy but no part number is stamped on it. Not sure how good they work though...

[bluejudge]

I thought that was for automatics?

[PMD1969]

Originally Posted by GPMESQ

What GTO in 1969 would have come with an idle stop solenoid?

How does it work?

Is this correct:

http://cgi.ebay.com/ws/eBayISAPI.dll...tchlink:top:en

I have one on 69FB MT and it has been explained to me that it prevents "dieseling"

Originally Posted by 7T-GOAT

I believe it is correct for the following: 1968 GTO/Firebird...1969-1970 GTO/Firebird Ram Air IV and 1971 GTO/Firebird with 4 bbl carb and manual transmission.

My pictures are of a original GM part. So, reproduction looks to be a good copy but no part number is stamped on it. Not sure how good they work though...

Hmmm? That one looks very close to the one on my Sprint 4bbl but the spade is off by 90 degrees but it would still work.

Originally Posted by bluejudge

I thought that was for automatics?

Manuals too.

[GPMESQ]

A 1969 400, non Ram Air, manual or auto, would not have one?

[android 211]

I thought it activated when the a/c was turned on to maintain idle speed and compensate for the increased load.

[north]

That solenoid could be used for either reason but in 69 it was only used only on RAIV's and Sprints and it was to prevent auto ignition (dieseling).

[PMD1969]

The seller has another one.

[PMD1969]

http://www.ebay.com/itm/290902168793...witem=&vxp=mtr

[corellian corvette]

For AC cars, this solenoid engages when the compressor does, and bumps up the idle speed to compensate for the extra load on the engine. Hence why you sometimes hear it referred to as an "idle compensator". It would be triggered by a wire that gets power when the compressor turns on.

If it works as north describes (which is the way it's setup on early Corvettes - my '73 Stingray works this way), then it's actually used to set the idle speed. It's activated when the ignition comes on. The way you set it is to disconnect it and set your idle speed screw a few hundred RPM below the recommended setting. Then plug it in and turn the stop to set your idle speed at the desired RPM.

It's a neat system because it allows you to run a slightly higher idle speed (throttle blades more open) if you need it, and when you shutoff the car it snaps the blades closed to prevent run-on (aka dieseling).

[PMD1969]

Originally Posted by corellian corvette

For AC cars, this solenoid engages when the compressor does, and bumps up the idle speed to compensate for the extra load on the engine. Hence why you sometimes hear it referred to as an "idle compensator". It would be triggered by a wire that gets power when the compressor turns on.

If it works as north describes (which is the way it's setup on early Corvettes - my '73 Stingray works this way), then it's actually used to set the idle speed. It's activated when the ignition comes on. The way you set it is to disconnect it and set your idle speed screw a few hundred RPM below the recommended setting. Then plug it in and turn the stop to set your idle speed at the desired RPM.

It's a neat system because it allows you to run a slightly higher idle speed (throttle blades more open) if you need it, and when you shutoff the car it snaps the blades closed to prevent run-on (aka dieseling).

Excellent description. That is precisely how it works on my 69FB manual without A/C.