V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

1991 3.1L

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Old Jul 3, 2009 | 12:12 PM
  #1  
confucius101's Avatar
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1991 3.1L

ok so my fan stopped working and i just spent two hours trying to find some sort of schematic or diagram to help me trace out my problem

the ****ing Haynes book i have goes from the 2.8 to 5.0 and skips the ****ing 3.1 so none of the colors on any of the wires match

WTF!!!!!!!!!!!!!!!!


Can one of you please help me locate the relay and or switch and tell me what if anything else i need to check
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Old Jul 3, 2009 | 12:22 PM
  #2  
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From: Pigeon Forge ,TN
Car: Firebird
Engine: 2.8 v/6
Transmission: t/5
Axle/Gears: open/3.42
Re: 1991 3.1L

My Haynes is from '93 and it has the 3.1 in it and the relay wire colors are brown or tan/white , red , dark green/white , and black/red . And IIRC the relay is by the brake booster . Forgot to tell you to go to your diagnostic port and do like you would to get the codes and see if your fan comes on .
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Old Jul 3, 2009 | 12:24 PM
  #3  
confucius101's Avatar
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Re: 1991 3.1L

ok there are three relays in the corner
How do I know what 1 it is?????


I'm really hoping it's just a bad relay.................
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Old Jul 3, 2009 | 02:13 PM
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From: Pigeon Forge ,TN
Car: Firebird
Engine: 2.8 v/6
Transmission: t/5
Axle/Gears: open/3.42
Re: 1991 3.1L

Check for the wire colors I gave you in my first post .
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Old Jul 20, 2009 | 06:10 PM
  #5  
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From: new jersy
Car: 1991 camaro RS
Engine: LT1
Transmission: automatic
Axle/Gears: 3.25
Re: 1991 3.1L

on my 91 the fan relay is the middle one of the three if that helps any
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Old Aug 29, 2009 | 11:04 AM
  #6  
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Re: 1991 3.1L

This is the book that the main Chevrolet company uses.
Hi those stupid service books suck bad.
this is what you need look on ebay for it trust me when i say that this book will put all others in the shiter.this is how the cover looks like this book it is used by Camaro professionals all over America and the world, they are rare to find but the very best trust me its bigger then your dictionary.
it makes your Camaro book look like a magazine!
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Old Aug 29, 2009 | 05:29 PM
  #7  
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Posts: 10,401
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 1991 3.1L

if u cant get it i can tell u how to wire the relay so the fan comes pon anytime the key is on
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