LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

service engine soon light, fans stuck on. help

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Old 02-23-2004, 08:18 PM
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service engine soon light, fans stuck on. help

Well, I got my car back from the shop (had a new tranny installed), and on the way home, I get an SES light. I notice that my fan switch is off, but both of the fans are goin, and the temp is good, around 160-180. Somethings telling the car that its overheating, when its not. Anyone know what the problem might be? thermostat?
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Old 02-23-2004, 08:59 PM
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I have same problem. Check your Air Pump fuse, is it Blown ? It is located in engine compartment.
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Old 02-23-2004, 09:04 PM
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Originally posted by Van5150
I have same problem. Check your Air Pump fuse, is it Blown ? It is located in engine compartment.

I had problems with the air pump fuse as well..

Well until I removed it..

I'd check the fuse for that first.. Might be that simple for you
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Old 02-23-2004, 10:22 PM
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wheres it at in the engine compartment?
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Old 02-23-2004, 10:23 PM
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I also had the same prob, it was my maf plug wiggled off somehow
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Old 02-23-2004, 10:26 PM
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Originally posted by KeVMaN
wheres it at in the engine compartment?
In the underhood fuse/relay center behind the LH headlight. The fans come on because of the SES-that's normal.

Since you have a 1993, you can pull trouble codes yourself and see what the SES is for.
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Old 02-23-2004, 10:56 PM
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Originally posted by blazzinbird
I also had the same prob, it was my maf plug wiggled off somehow
I don't have a maf
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Old 02-23-2004, 10:58 PM
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Originally posted by shoebox
In the underhood fuse/relay center behind the LH headlight. The fans come on because of the SES-that's normal.

Since you have a 1993, you can pull trouble codes yourself and see what the SES is for.
ah thanks a ton man. Is that the little port thing in the driver kick panel?
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Old 02-23-2004, 11:55 PM
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Originally posted by KeVMaN
ah thanks a ton man. Is that the little port thing in the driver kick panel?
Should be by your right knee, bottom edge of the dash.
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Old 02-23-2004, 11:59 PM
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Originally posted by shoebox
Should be by your right knee, bottom edge of the dash.
Anywhere that shows a list of codes? I know my camaro book lists them but thats at my dads house
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Old 02-24-2004, 12:06 AM
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Originally posted by KeVMaN
Anywhere that shows a list of codes? I know my camaro book lists them but thats at my dads house
Look no farther than my Tech Page.
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Old 02-24-2004, 02:13 AM
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Haha, yeah, shoebox's tech page is on my favorites list......
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Old 02-24-2004, 04:40 AM
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So does an SES light always cause the fans to stay on?
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Old 02-24-2004, 08:12 AM
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Originally posted by Amped96
So does an SES light always cause the fans to stay on?
In most cases, it triggers the fans.
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Old 02-24-2004, 10:17 AM
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OK..makes me feel a little better. Mine have been running an awful lot I thought. I have several codes triggered by removal of air pump, egr, rear O2s, and the like. Guess i should hit up pcmforless sometime. Thanks for the info.
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