Stalling when A/C is put on
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Stalling when A/C is put on
I have a 1998 2500 24v. When the A/C is turned on, the truck stalls out at an idle. I have somewhat learned to deal with it, but my wife is driving me crazy about it. I saw on an earlier thread that you can adjust the idle. However, that was on a 12v. Is there a way I can adjust the idle on this thing or am I dealing with a whole other set of problems? We are going on a long trip tomorrow and I would like to hopefully nip it in the butt. Any help is much appreciated.
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Not every single time but pretty darn close to it. It seems to act up even worse when the truck is warm. It will do it also without the A/C on. However, it doesn't happen nearly as much as when the A/C is on.
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I'm interested in this topic too as I have been having the same problem. It doesn't always stall, but mainly when shifting from drive to reverse or reverse to drive. It will die as soon as it goes into gear and puts the load on the engine. Only happens with the A/C on, never with A/C off. Idle is at about 700 rpm and the A/C works fine with no strange noises and I barely feel any draw on the engine when going down the road and it cycling on and off. Seems like a higher idle would help but I think the electrics, fuel, etc, are all working as they should. Any ideas from out there would be appreciated.
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Originally posted by roysleight
I'm interested in this topic too as I have been having the same problem. It doesn't always stall, but mainly when shifting from drive to reverse or reverse to drive. It will die as soon as it goes into gear and puts the load on the engine. Only happens with the A/C on, never with A/C off. Idle is at about 700 rpm and the A/C works fine with no strange noises and I barely feel any draw on the engine when going down the road and it cycling on and off. Seems like a higher idle would help but I think the electrics, fuel, etc, are all working as they should. Any ideas from out there would be appreciated.
I'm interested in this topic too as I have been having the same problem. It doesn't always stall, but mainly when shifting from drive to reverse or reverse to drive. It will die as soon as it goes into gear and puts the load on the engine. Only happens with the A/C on, never with A/C off. Idle is at about 700 rpm and the A/C works fine with no strange noises and I barely feel any draw on the engine when going down the road and it cycling on and off. Seems like a higher idle would help but I think the electrics, fuel, etc, are all working as they should. Any ideas from out there would be appreciated.
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#8
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Mine is a 12 valve so with a different IP and lift pump it would react different. However, the rule is to set idle at 750 with the AC on. You might try that, but I couldn't tell you how on a 24 v.
#10
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Is it possible that any of you have recently had your AC charged?
Overcharged or high head pressure could stall an engine.
I have had an overcharged AC unit stall a Pinto engine dead before.
Also do you think the AC is loading up the engine (trying to strangle it) or is the engine maybe loosing power?
I am not sure about the 24v engines, but isn't the idle speed controlled by the computer to compensate for the load? Shouldn't it show codes?
Jim.
Overcharged or high head pressure could stall an engine.
I have had an overcharged AC unit stall a Pinto engine dead before.
Also do you think the AC is loading up the engine (trying to strangle it) or is the engine maybe loosing power?
I am not sure about the 24v engines, but isn't the idle speed controlled by the computer to compensate for the load? Shouldn't it show codes?
Jim.
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I had the exact same problem. Mine however is a 12, doubt that has any bearing on it whatsoever.
After it started happening, I just got used to no AC for a while, finally i decided to have a look. I was praying the pump wasnt shot.
All I ended up doing believe it or not, was give it a good spray down of anti-sieze.
Pick your favorite, i think i used good ol WD.
At any rate, 2 years later, works fine, and somehow my 96 pumps colder air than my wifes brand new 05 grand cherokee
After it started happening, I just got used to no AC for a while, finally i decided to have a look. I was praying the pump wasnt shot.
All I ended up doing believe it or not, was give it a good spray down of anti-sieze.
Pick your favorite, i think i used good ol WD.
At any rate, 2 years later, works fine, and somehow my 96 pumps colder air than my wifes brand new 05 grand cherokee
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Originally posted by Jim Lane
Is it possible that any of you have recently had your AC charged?
Overcharged or high head pressure could stall an engine.
I have had an overcharged AC unit stall a Pinto engine dead before.
Also do you think the AC is loading up the engine (trying to strangle it) or is the engine maybe loosing power?
I am not sure about the 24v engines, but isn't the idle speed controlled by the computer to compensate for the load? Shouldn't it show codes?
Jim.
Is it possible that any of you have recently had your AC charged?
Overcharged or high head pressure could stall an engine.
I have had an overcharged AC unit stall a Pinto engine dead before.
Also do you think the AC is loading up the engine (trying to strangle it) or is the engine maybe loosing power?
I am not sure about the 24v engines, but isn't the idle speed controlled by the computer to compensate for the load? Shouldn't it show codes?
Jim.
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