Electric Fan come on when cold... SOMETIMES?
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From: Kalkaska MI
Electric Fan come on when cold... SOMETIMES?
I've mentioned this before in other threads and still looking for help.
I have a 88' all stock vette with 96K miles and have been having several issues. One of them is an intermittent issue with my cooling fan which will come on when I turn the key on. Sometimes it doesn't come on right away BUT will soon after the car has started. Just to be clear, this is a totally cold car. If the car is running (still cold) and the fan comes on it willl cause a SES light to come on AND when it does the engine stumbles and SES light flickers.
How does the electric fan influence engine idle???
I have a 88' all stock vette with 96K miles and have been having several issues. One of them is an intermittent issue with my cooling fan which will come on when I turn the key on. Sometimes it doesn't come on right away BUT will soon after the car has started. Just to be clear, this is a totally cold car. If the car is running (still cold) and the fan comes on it willl cause a SES light to come on AND when it does the engine stumbles and SES light flickers.
How does the electric fan influence engine idle???
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From: Kalkaska MI
The last two times I took it out for a test run, I went about 10 miles, car ran fine, then SES light came on. Back at home I check codes and got code 44. (shown in another post)
Drifting
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From: Magnolia Tx
I only read this thread. I know the fan won’t cause a code 44, lean exhaust. Low fuel pressure, one or more bad injectors (likely driver side) plugged filter, failing fuel pump. Fix the root cause and the csr won’t go into limp home mode stumbling running fans.
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From: Kalkaska MI
Fuel pressure is
44 with key on but not started
39/40 at idle
52/54 at quick acceleration
36/38 when I raise the RPM and hold it there
I have not got a pressure in a highway load condition.
Drifting
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From: Magnolia Tx
Vacuum leaks can cause a lean condition. Has the intake been off? What shape are all the hoses and plastic vacuum lines The brake booster isn't likely to be it, you would know. New o-rings on the injectors when you swapped them? What is your idle speed? Vacuum leaks can cause it to be higher than normal.
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From: Lansing MI
All sounds pretty normal. Maybe on the high side or things.
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From: Lansing MI
I've mentioned this before in other threads and still looking for help.
I have a 88' all stock vette with 96K miles and have been having several issues. One of them is an intermittent issue with my cooling fan which will come on when I turn the key on. Sometimes it doesn't come on right away BUT will soon after the car has started. Just to be clear, this is a totally cold car. If the car is running (still cold) and the fan comes on it willl cause a SES light to come on AND when it does the engine stumbles and SES light flickers.
How does the electric fan influence engine idle???
I have a 88' all stock vette with 96K miles and have been having several issues. One of them is an intermittent issue with my cooling fan which will come on when I turn the key on. Sometimes it doesn't come on right away BUT will soon after the car has started. Just to be clear, this is a totally cold car. If the car is running (still cold) and the fan comes on it willl cause a SES light to come on AND when it does the engine stumbles and SES light flickers.
How does the electric fan influence engine idle???
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From: Glenbeulah Wi
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From: Kalkaska MI
Thanks... I've seen this list of checks. I'm unsure of how to do #4 MAF sensor check??? How do you unplug it and not get a code showing it's not working?
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From: Kalkaska MI
Vacuum leaks can cause a lean condition. Has the intake been off? What shape are all the hoses and plastic vacuum lines The brake booster isn't likely to be it, you would know. New o-rings on the injectors when you swapped them? What is your idle speed? Vacuum leaks can cause it to be higher than normal.