LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Relays gone bad already??

Thread Tools
 
Search this Thread
 
Old Apr 10, 2006 | 02:54 PM
  #1  
BlackBirdWs6Zzz's Avatar
Thread Starter
TECH Enthusiast
iTrader: (6)
 
Joined: Nov 2005
Posts: 744
Likes: 0
From: Michigan
Default Relays gone bad already??

So I just found out my cooling fans are NOT coming on. So my friend came over with a test light and tested my relay for Coolant fan #1 and #2. Both were bad. He tested it by using a simple wire (speaker wire) and plugged it in where he was getting power and the ground, once he did that the cooling fans turned. So I KNEW that was the culprit. So today i went to autozone and got new relays and I plugged them in and they wouldn't come on. What could this be? Loose wire at the bottom of the relay fuse box? I mean my buddy did it using speaker wire so why did the relay work? Could they be bad really?

THANK YOU IN ADVANCE!

ALSO! When i put a new thermo in (which was the stock 195 thermo) I could see that the guy before me had put in a 170 thermo. I though the thermo was bad so I changed it. So now I know it's the relays so i thought that info might help you guys hlep me!
Reply
Old Apr 10, 2006 | 05:08 PM
  #2  
Dragframe's Avatar
9 Second Club
15 Year Member
Liked
Loved
Community Favorite
iTrader: (14)
 
Joined: Oct 2005
Posts: 2,336
Likes: 67
From: wyoming @ 12000 DA...
Default

u do know the stock fans dont turn on untill 226 degrees right?? have ur pcm reprogrammed to make them turn on sooner
Reply
Old Apr 10, 2006 | 05:51 PM
  #3  
BlackBirdWs6Zzz's Avatar
Thread Starter
TECH Enthusiast
iTrader: (6)
 
Joined: Nov 2005
Posts: 744
Likes: 0
From: Michigan
Default

Originally Posted by Dragframe
u do know the stock fans dont turn on untill 226 degrees right?? have ur pcm reprogrammed to make them turn on sooner
Thnanks! That was my next question! I guess it doesn't matter cuz i started it about 45 minutes ago and the temp just kept climbing and climbing and no fans came on.

Whats the process where you can make a switch to manually turn on the fan? I'm sure alot of you have done it? Any instructions on how to do so??
Reply
Old Apr 10, 2006 | 06:00 PM
  #4  
Dragframe's Avatar
9 Second Club
15 Year Member
Liked
Loved
Community Favorite
iTrader: (14)
 
Joined: Oct 2005
Posts: 2,336
Likes: 67
From: wyoming @ 12000 DA...
Default

Originally Posted by BlackBirdWs6Zzz
Thnanks! That was my next question! I guess it doesn't matter cuz i started it about 45 minutes ago and the temp just kept climbing and climbing and no fans came on.

Whats the process where you can make a switch to manually turn on the fan? I'm sure alot of you have done it? Any instructions on how to do so??

there is actully a kit....
Reply
Old Apr 10, 2006 | 11:44 PM
  #5  
smoknta's Avatar
TECH Enthusiast
 
Joined: Jul 2003
Posts: 697
Likes: 0
From: Evansville, IN
Default

I'm sure the relays are good, the problem might be that the PCM isn't turning them on. Turn on the A/C and both fans should come on. Do they work that way?
Reply
Old Apr 11, 2006 | 06:08 PM
  #6  
93formulabird's Avatar
On The Tree
iTrader: (2)
 
Joined: Jan 2006
Posts: 129
Likes: 0
Default

Not to hijack or anything, but I am having a similiar problem. But when I turn on my a/c the fans do turn on, but they dont when the temp hits 220+. Does this mean its not the PCM which is confused?
Reply
Old Apr 11, 2006 | 06:42 PM
  #7  
BlackBirdWs6Zzz's Avatar
Thread Starter
TECH Enthusiast
iTrader: (6)
 
Joined: Nov 2005
Posts: 744
Likes: 0
From: Michigan
Default

I think when turning on the AC it is just ONE fan. Not COMPLETELY sure. But if the relays are truly good then the only answer is the computer. I'm sure you could fix this with a tune, you could tell teh fans to come on even earlier around 180 or something to go along with your thermostat. I had the 170 thermo in mine but accidently put the 195 in. I'm going to take it back. It has to be the computer. Seeing we have the same year i'm sure it might be a common problem?
Reply




All times are GMT -5. The time now is 05:29 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE