Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Cooling issue...puzzled 01 SS

Thread Tools
 
Search this Thread
 
Old Aug 24, 2016 | 09:36 PM
  #1  
6spdg37s's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jul 2012
Posts: 326
Likes: 0
Default Cooling issue...puzzled 01 SS

So I have my 01 Camaro SS CAM only car.

well cam and supporting mods,bolt-ons etc;

so my tuner noticed that the temps were running high when he had the car, now I got the car back, start playing around with it and ultimately decided to replace the fan assembly since it was cheap and the car is 15 years old.

Who can break down for me which side fan should be on under which conditions...

The car is tuned to have the fans kick on at lower temp, so ideally the car should be running 175-185 maybe 190.. I am running like 212 without A/C on and like almost 230 with the AC on.

the car had 1 previous owner, I found a jumper wire tonight going from the far left fan relay (out of the 3) to another part of the harness...

I need to play around with that more but will also replace the 3 relays as a safety precaution.

is it possible that the ASP underdrive pulleys slowed my water pump down and it cant handle the cooling?

The driver side fan is NOT on when the passenger side is ON. even if the temp is high.
Reply
Old Aug 25, 2016 | 06:58 PM
  #2  
6spdg37s's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jul 2012
Posts: 326
Likes: 0
Default

Anyone ? bump ?

I got the schematics today , gonna trace the wires when I get a chance and see what's up
Reply
Old Aug 26, 2016 | 07:16 AM
  #3  
conan's Avatar
TECH Senior Member
20 Year Member
iTrader: (5)
 
Joined: May 2004
Posts: 6,492
Likes: 6
From: Back in the Burg
Default

Both fans should run at the same time. If you only have one fan running at a time something is going on. Is the car running hot while driving or just sitting ?

This might help you trace some wires... https://ls1tech.com/forums/forced-in...ring-help.html
Reply
Old Aug 26, 2016 | 12:24 PM
  #4  
6spdg37s's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jul 2012
Posts: 326
Likes: 0
Default

Both going up over 200 close to 230 ... It has 160 thermo and tune for fans to kick on with thermostat
Reply
Old Aug 26, 2016 | 01:54 PM
  #5  
conan's Avatar
TECH Senior Member
20 Year Member
iTrader: (5)
 
Joined: May 2004
Posts: 6,492
Likes: 6
From: Back in the Burg
Default

When you say both going up over 200, do you mean when driving too ?
Reply
Old Aug 26, 2016 | 04:01 PM
  #6  
6spdg37s's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jul 2012
Posts: 326
Likes: 0
Default

Yes driving or idling and the driver side fan isn't going on
Reply
Old Aug 26, 2016 | 05:21 PM
  #7  
conan's Avatar
TECH Senior Member
20 Year Member
iTrader: (5)
 
Joined: May 2004
Posts: 6,492
Likes: 6
From: Back in the Burg
Default

Do you still have the air dam on the bottom of the radiator support?

I would also start checking the fan wiring with a test light or OHM meter to see why both fans aren't coming on.
Reply
Old Aug 26, 2016 | 07:25 PM
  #8  
6spdg37s's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jul 2012
Posts: 326
Likes: 0
Default

going to focus on the fans for now. not sure when im going to get a chance to do this
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Aug 28, 2016 | 06:22 PM
  #9  
6spdg37s's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jul 2012
Posts: 326
Likes: 0
Default

Okay so I went to my shop today and did some testing...

-relay 1 command, low fan goes on
-relay 2,3 command high fan goes on
-I checked the low and Hi fan signal wire that run from the PCM to the relay box, they both commanded the fans on as well
-once the car got to the temperature that was supposed to trigger both low and Hi fans, the corresponding low and high fan wires from the PCM had ground (fans are ground triggered)

then car starts heating up and low fan (driver side) did not come on. the car went up to 238, it does not come on with the A/C on or the A/C off. but the signal wire is sending the ground to the relay. The relays are new.

what stumps me is that the fan works when commanded or probed

unless there is a break in a wire between the relay for the low fan and the actual low fan pigtail, and it makes contact and doesn't (fan going on n off)
Reply
Old Aug 29, 2016 | 08:08 AM
  #10  
conan's Avatar
TECH Senior Member
20 Year Member
iTrader: (5)
 
Joined: May 2004
Posts: 6,492
Likes: 6
From: Back in the Burg
Default

I would check that section of wire and see if the back of the fan is getting power.
Reply
Old Aug 29, 2016 | 09:44 AM
  #11  
6spdg37s's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jul 2012
Posts: 326
Likes: 0
Default

Whenever I probe the lead wire from the pcm and send negative to it the fan powers on which is what puzzles me
Reply
Old Aug 29, 2016 | 11:08 PM
  #12  
alaska_guy's Avatar
On The Tree
 
Joined: May 2016
Posts: 104
Likes: 1
Default

In the mean time I would put in a temporary toggle switch so you can command your fans on. Most guys who drag their car find this as a necessary modification between passes.
Reply
Old Aug 30, 2016 | 01:02 AM
  #13  
Cthulu's Avatar
TECH Apprentice
 
Joined: Jul 2008
Posts: 309
Likes: 1
Default

This is going to sound silly, but remote your radiator and blow it out with a hose and compressed air. Once it is out do the same thing for the ac condensor 15+ years of crud and bent fins really reduces how efficient they are. I had this same problem and this solved it.
Reply
Old Aug 30, 2016 | 08:27 AM
  #14  
6spdg37s's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jul 2012
Posts: 326
Likes: 0
Default

Found a broken wire in the harness below the abs module that wire provides power to relay 3 all fixed now
Reply
Old Aug 30, 2016 | 11:03 AM
  #15  
conan's Avatar
TECH Senior Member
20 Year Member
iTrader: (5)
 
Joined: May 2004
Posts: 6,492
Likes: 6
From: Back in the Burg
Default

Originally Posted by 6spdg37s
Found a broken wire in the harness below the abs module that wire provides power to relay 3 all fixed now

Glad to see you got her figured out. Did you look to see if the plastic air dam is still in place on the lower radiator support ?
Reply
Old Aug 30, 2016 | 06:26 PM
  #16  
6spdg37s's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jul 2012
Posts: 326
Likes: 0
Default

Originally Posted by conan

Glad to see you got her figured out. Did you look to see if the plastic air dam is still in place on the lower radiator support ?
I think its still there I also have the SSRA ram air.

so that does block airflow to the radiator a tiny bit. but AC on last night 182 degrees
Reply




All times are GMT -5. The time now is 09:24 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE