Cooling Fan comes on early and stays on

K

Koinz

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Hello all,

I have a 96 Sunfire 2.2 liter and I just got done replacing the cylinder head and gasket.
Engine fired right up and sounds good. (at least theres no abnormal noises)

I let the engine warm up, within a few minutes of running, the cooling fan came on and it stays on.
I also noticed there is a check engine light on.

I've been reading through post's here that the fan is controlled by the PCM and that certain codes could turn the fan on until the problem is fixed. Is that correct?
I haven't checked for codes yet, just got it together last night. I'll probably have to take it to Autozone or someone that has a code checker.
I don't believe the problem existed before, but the engine was overheating pretty badly before. That's why I opted to just replace the head.

How do you clear the codes from the computer? Disconnect battery? or is there a different procedure.
 
Thanks. I'll see if I can get the codes cleared and re-check. I'm pretty sure the check engine light was on before I ripped it apart.
 
Update -

On my way to Autozone to have the code checked out, the Check Engine Light cleared itself. I guess it just needed to cycle through some self checks while driving. The Fan also stopped. When I got to Autozone, I asked if they could see what the code was but they told me that once the code clears their tool can't tell what it was.

One thing I did notice is the Thermostat's from Autozone are too weak or coolant get's by them. As I drive, the temperature of the engine get's colder and when stopped at a light or just idling it creeps backup to normal. I put the original back in and all is fine.

Case closed. Thanks for your replies.
 
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