Hot idle problems
Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
Originally Posted by SIXFOOTER
It is on the drivers side forward of the throttle lever, just a solenoid that kicks in when the compressor is on to compensate for the extra load.
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
I think its on the compressor clutch circuit, thats where I found the diagram in the Repair Manual. When the clutch comes on, it also turns on the soleniod and the solenoid kicks the idle up a bit. I'll take a pic this afternoon for you
Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
Originally Posted by SIXFOOTER
I think its on the compressor clutch circuit, thats where I found the diagram in the Repair Manual. When the clutch comes on, it also turns on the soleniod and the solenoid kicks the idle up a bit. I'll take a pic this afternoon for you
BTW where can I buy one of these soleniods on line?
Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
Originally Posted by 78pacer
Dean, It sounds to me that you have a vacuum leak somewhere. Check the carb base gasket and hoses. Good luck!
Mike
Mike
No one on the forum has suggested this so I was hoping not to have to add these extra fans. The engine does not get hot ever so it is a shame to have to add these fugle fans just to idle in stop and go city traffic in hot months.
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
you can put in an electric fan to replace the mechanical one and have it set up to run with normal heat control and off the compressor circuit. I like the electric fan system partially because it cleans up the engine bay so well.
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Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
Originally Posted by SIXFOOTER
you can put in an electric fan to replace the mechanical one and have it set up to run with normal heat control and off the compressor circuit. I like the electric fan system partially because it cleans up the engine bay so well.
Burning Brakes
Joined: Aug 2005
Posts: 1,126
Likes: 0
From: Hudson Falls, N.Y. 76 Vette Modified L-48
I think you already know the answer...with A/C off, you have no problems at lights, hot....I'd follow the solinoid theory...A/C on WILL drag the engine down....maybe you just need the A/C system serviced...ever think of that? You did say it wasn't as cold as it used to be...coincidence?? I think not...
Last edited by kb2fzq; Apr 29, 2006 at 04:48 AM.
Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
Originally Posted by kb2fzq
I think you already know the answer...with A/C off, you have no problems at lights, hot....I'd follow the solinoid theory...A/C on WILL drag the engine down....maybe you just need the A/C system serviced...ever think of that? You did say it wasn't as cold as it used to be...coincidence?? I think not...
Burning Brakes
Joined: Aug 2005
Posts: 1,126
Likes: 0
From: Hudson Falls, N.Y. 76 Vette Modified L-48
My A/C on the vette doesn't work..."someday"...I will have it looked at, but on my 2000 Mustang, when the A/C compressor kicks in the idle drops for a couple seconds, then the computer notices and compensates, so I know it will effect idle....I'm just saying if the A/C system needs service, it "may" be dragging the RPM's down, altho you say it's nice and cold, which would tell me it's probably fine...this solenoid the guys are talking of is probably the key here...it's just an old way of doing what my Mustang computer does, compensating for the drag of the compressor...ya know?
And if the intake and carb have been changed, it's likely the solenoid went bye-bye...
And if the intake and carb have been changed, it's likely the solenoid went bye-bye...
Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
Originally Posted by kb2fzq
And if the intake and carb have been changed, it's likely the solenoid went bye-bye...
Burning Brakes
Joined: Aug 2005
Posts: 1,126
Likes: 0
From: Hudson Falls, N.Y. 76 Vette Modified L-48
I was looking around for you too, and didn't see anything either....I guess best bet would ask for a member with a stock 81 to look and see if one is on the engine, maybe even a picture would be nice..if there should be one on your engine, you should be able to find one someplace in the vette world...if you know what the official name of it is..
Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
kb2fzq
Sixfooter had sent me a picture that believe is from his 81. If it is I will get busy in finding my old linkage over at my friend place as he don't throw anything away.
Sixfooter had sent me a picture that believe is from his 81. If it is I will get busy in finding my old linkage over at my friend place as he don't throw anything away.
