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Old 08-31-2009   #1
-=Jeff=-
 
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Default Left side Coolant fan issue

I was working on the windows on my Z this weekend. After a couple minutes the fan came on.. thing is the car has not been started for a couple days so I know the temp did not require it. Not sure what it could be but looking for some suggestions
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1990 Corvette ZR-1 #1051
Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback
Late Model IH - Plenum
Coilovers - 4.10s
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Old 08-31-2009   #2
65ZR1
 
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Default Re: Left side Coolant fan issue

Check for codes. If you went in to limp home mode the fans come on.
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Old 08-31-2009   #3
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Default Re: Left side Coolant fan issue

Quote:
Originally Posted by 65ZR1 View Post
Check for codes. If you went in to limp home mode the fans come on.
No codes.. start the engine and the SES is off..

shut off engine then turn key to on, with engine not running fan stays off.

I need to go through the troubleshoot guide in the manual

which fan is the left? 1 or 2?
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1990 Corvette ZR-1 #1051
Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback
Late Model IH - Plenum
Coilovers - 4.10s
Custom Interior
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Old 08-31-2009   #4
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Default Re: Left side Coolant fan issue

Jeff, just one fan goes on or both?

If it goes on with with key on i'm thinking relay.
Swap out relays.

Check Prom.

Pete
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Old 08-31-2009   #5
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Default Re: Left side Coolant fan issue

Quote:
Originally Posted by Pete View Post
Jeff, just one fan goes on or both?

If it goes on with with key on i'm thinking relay.
Swap out relays.

Check Prom.

Pete
Will do, and yes only one.
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1990 Corvette ZR-1 #1051
Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback
Late Model IH - Plenum
Coilovers - 4.10s
Custom Interior
NCM Lifetime Member #978
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Old 08-31-2009   #6
LGAFF
 
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Default Re: Left side Coolant fan issue

If you ever want to come over and swap parts out of one of mine to test, let me know. Might save you some $
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Old 08-31-2009   #7
-=Jeff=-
 
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Default Re: Left side Coolant fan issue

Thanks Lee.. If it gets to that I will

need to troubleshoot it first
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1990 Corvette ZR-1 #1051
Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback
Late Model IH - Plenum
Coilovers - 4.10s
Custom Interior
NCM Lifetime Member #978
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Old 08-31-2009   #8
XfireZ51
 
Join Date: May 2007
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Default Re: Left side Coolant fan issue

Quote:
Originally Posted by -=Jeff=- View Post
Thanks Lee.. If it gets to that I will

need to troubleshoot it first

Relay?
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Old 09-01-2009   #9
-=Jeff=-
 
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Default Re: Left side Coolant fan issue

Not the Relay, Swapped and the same issue

I hooked up my Laptop, AC Request is set to 'Yes' even when the controller is 'OFF' Keep in mind I have C60 (Manual AC)

So I followed the troubleshooting guide, and it says if I put a test light from Green connector pin #2 of the ECM to ground, I should get a light in Bi-level, AC, Max and Defrost.. it never lights. I need to check the wire and check the under dash connector, but the odd thing is the AC works.. so I am a bit confused on that.. I am guessing I have a loose connection or broken wire Ah well, I will check it when I start working on the passenger side window
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1990 Corvette ZR-1 #1051
Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback
Late Model IH - Plenum
Coilovers - 4.10s
Custom Interior
NCM Lifetime Member #978
-=Jeff=- is offline   Reply With Quote
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