ZR-1 Net Registry Forums  

Go Back   ZR-1 Net Registry Forums > C4 ZR-1 > C4 ZR-1 Technical Postings

Reply
 
Thread Tools Display Modes
Old 08-31-2009   #1
-=Jeff=-
 
-=Jeff=-'s Avatar
 
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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
__________________
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
Old 08-31-2009   #2
65ZR1
 
Join Date: May 2006
Location: Canada
Posts: 139
Default Re: Left side Coolant fan issue

Check for codes. If you went in to limp home mode the fans come on.
65ZR1 is offline   Reply With Quote
Old 08-31-2009   #3
-=Jeff=-
 
-=Jeff=-'s Avatar
 
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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?
__________________
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
Old 08-31-2009   #4
Pete
 
Pete's Avatar
 
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
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
__________________
'91 #1635 PoloGreen 350 LT5
11.09 @ 129.27
11.04 @ 128.86
474RWHP 400RWTQ
http://www.youtube.com/watch?v=SFNFOhGGlR4
http://www.youtube.com/watch?v=ZlRIOMwaDYY
https://sites.google.com/site/peteszr1garage
Pete is offline   Reply With Quote
Old 08-31-2009   #5
-=Jeff=-
 
-=Jeff=-'s Avatar
 
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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.
__________________
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
Old 08-31-2009   #6
LGAFF
 
LGAFF's Avatar
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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 $
__________________
LGAFF
90 #966-150K miles-sold
92 #234-sold
1987 Callaway TT #17
1991 ZR-1 #1359
LGAFF is offline   Reply With Quote
Old 08-31-2009   #7
-=Jeff=-
 
-=Jeff=-'s Avatar
 
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
Default Re: Left side Coolant fan issue

Thanks Lee.. If it gets to that I will

need to troubleshoot it first
__________________
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
Old 08-31-2009   #8
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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?
XfireZ51 is offline   Reply With Quote
Old 09-01-2009   #9
-=Jeff=-
 
-=Jeff=-'s Avatar
 
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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
__________________
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
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:14 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2020