Poor Idle after water pump and distributer cap replacement
01-18-2008, 11:10 PM
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Poor Idle after water pump and distributer cap replacement My car is a 94 Trans Am with about 80k miles to start off. Hope this is the best section to post it in... if not move it please.
My water pump started leaking, and needed to be replaced. My dad gets parts at cost+10, , so he offered to have the distributer cap replaced as well while the water pump was going to be off.
Now when my car is warmed up and idles... it starts to idle very low, maybe 550rpm. Because of this, I assume, it revs up so it doesn't choke out, sometimes up to over 1krpm. I don't remember what the idle used to be, but it used to be great.
Any idea what happened?
My water pump started leaking, and needed to be replaced. My dad gets parts at cost+10, , so he offered to have the distributer cap replaced as well while the water pump was going to be off.
Now when my car is warmed up and idles... it starts to idle very low, maybe 550rpm. Because of this, I assume, it revs up so it doesn't choke out, sometimes up to over 1krpm. I don't remember what the idle used to be, but it used to be great.
Any idea what happened?
01-19-2008, 08:05 PM
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The icm is the ignition control module.
Take a look at this thread:
https://ls1tech.com/forums/showthrea...&highlight=icm
I had a problem with my ICM on my LT1 car after I took my supercharger off. This is because with the Vortech the ICM was mounted further from the head and stayed cooler. I fixed it by making a bracket that held the ICM away from the head so it wouldn't get as hot. Might try that, it's easy to get to.
WB
Take a look at this thread:
https://ls1tech.com/forums/showthrea...&highlight=icm
I had a problem with my ICM on my LT1 car after I took my supercharger off. This is because with the Vortech the ICM was mounted further from the head and stayed cooler. I fixed it by making a bracket that held the ICM away from the head so it wouldn't get as hot. Might try that, it's easy to get to.
WB
01-19-2008, 08:57 PM
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The opti cap and rotor being replaced shouldn't have hurt the ICM, same with the water pump.
The icm is bolted to the driver's side head. Is there any chance he got it wet when he changed water pumps?
The icm is bolted to the driver's side head. Is there any chance he got it wet when he changed water pumps?
01-19-2008, 09:22 PM
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timing could be slightly off....mine dide a simular thing when I did my cam swap, had the timing off a lil and it would idle low, but then agian it wouldn't rev any higher than 1,500
