CorvetteForum - Chevrolet Corvette Forum Discussion

C4 General Discussion General C4 Corvette Discussion not covered in Tech

Primary cooling fan

Thread Tools
 
Search this Thread
 
Old Mar 12, 2011 | 08:13 PM
Share
  #1  
liuhisn's Avatar
liuhisn
Thread Starter
Advanced
 
Joined: Jan 2011
Posts: 58
Likes: 1
From: Victorville Ca
Default Primary cooling fan
Does anyone know at what temperature does the primary cooling fan turn on at idle? The auxiliary turns on at about 235 degrees. The fan motor is good and I have replaced the temp cooling switch on the engine block. The primary fan does not turn on. Is it supposed to turn on only when the car is moving?
Reply
0
Old Mar 12, 2011 | 08:20 PM
Share
  #2  
RollaMo-LT4's Avatar
RollaMo-LT4
Race Director
20 Year Member
St. Jude 15 Year Donor
Liked
Community Favorite
 
Joined: Oct 2005
Posts: 11,772
Likes: 177
From: Rolla Missouri
2021 C4 of the Year - Unmodified Finalist
St. Jude Donor '10 thru '25
Default
Not all years of the C4 are same.
So, list all the important information that will help others help you.
Reply
0
Old Mar 12, 2011 | 08:40 PM
Share
  #3  
liuhisn's Avatar
liuhisn
Thread Starter
Advanced
 
Joined: Jan 2011
Posts: 58
Likes: 1
From: Victorville Ca
Default
The cooling fan does not come on at 226 Degrees as the repair manual says. The car is an 1988 corvette. The auxiliary fan does turn on. My question is, Does the cooling fan only turn on while moving? I have replaced the thermostat. It just seems to be running a little hotter than normal. All of the relays have been changed. Is there a switch inside of the fan motor?
Reply
0
Old Mar 12, 2011 | 08:44 PM
Share
  #4  
slicked25's Avatar
slicked25
Burning Brakes
10 Year Member
 
Joined: Nov 2005
Posts: 1,211
Likes: 2
From: Dumas Arkansas
Default
My 92 PCF turns on at 186 that's if the A/C is off of course.
Reply
0
Old Mar 12, 2011 | 08:49 PM
Share
  #5  
rodj's Avatar
rodj
Le Mans Master
25 Year Member
 
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Default
Originally Posted by liuhisn
cooling fan does not come on at 226 Degrees All of the relays have been changed. Is there a switch inside of the fan motor?
Does the Pri fan itself actually work?
Have you got 12V power on the heavy red wire at the fan relay?
Will relay operate if grn/ wht wire at relay grounded ?

Computer turns on fan from temp readings it gets from CTS;
If CTS is sending bad temp readings then engine would be running rough so fair to assume problem is with fan / wiring itself

Originally Posted by liuhisn
I have replaced the temp cooling switch on the engine block. The primary fan does not turn on.
On a '88 the temp switch only operates the Aux fan in front of radiator ( if fitted ) and it is in the drv side head ;
not the block
Last edited by rodj; Mar 13, 2011 at 01:07 AM.
Reply
0
Old Mar 12, 2011 | 11:21 PM
Share
  #6  
liuhisn's Avatar
liuhisn
Thread Starter
Advanced
 
Joined: Jan 2011
Posts: 58
Likes: 1
From: Victorville Ca
Default
Ok I will test the fan itself. Thanks
Reply
0
Old Mar 13, 2011 | 07:06 PM
Share
  #7  
guno89's Avatar
guno89
Racer
15 Year Member
 
Joined: Dec 2004
Posts: 289
Likes: 3
From: new york
Default
I have an 89. The fan should come on if you put car in aux mode and pull the codes. When my main fan didn't go on it was a relay. I took the relay from the aux fan and wala my main fan worked again.
Reply
0
Old Mar 13, 2011 | 08:39 PM
Share
  #8  
liuhisn's Avatar
liuhisn
Thread Starter
Advanced
 
Joined: Jan 2011
Posts: 58
Likes: 1
From: Victorville Ca
Default
Where is the primary fan relay? The secondary fan relay is on the radiator shroud. That relay works.
Reply
0
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Mar 13, 2011 | 08:41 PM
Share
  #9  
liuhisn's Avatar
liuhisn
Thread Starter
Advanced
 
Joined: Jan 2011
Posts: 58
Likes: 1
From: Victorville Ca
Default
Put the car in aux mode? Do you mean just hooking the code reader up to it?
Reply
0
Old Mar 13, 2011 | 10:47 PM
Share
  #10  
guno89's Avatar
guno89
Racer
15 Year Member
 
Joined: Dec 2004
Posts: 289
Likes: 3
From: new york
Default
Originally Posted by liuhisn
Where is the primary fan relay? The secondary fan relay is on the radiator shroud. That relay works.
On drivers side behind the wheel its mounted. Kind of across from the battery. .

http://s599.photobucket.com/albums/t...nt%3Dwheel.jpg


****Mine has 2 relays, since I have a 6 speed****** If you have 2 of them its the 2nd relay, the one further from the battery.

As far as aux mode, when you pull the codes the fan should go on.
Reply
0
Old Mar 13, 2011 | 10:57 PM
Share
  #11  
guno89's Avatar
guno89
Racer
15 Year Member
 
Joined: Dec 2004
Posts: 289
Likes: 3
From: new york
Default
Originally Posted by liuhisn
Where is the primary fan relay? The secondary fan relay is on the radiator shroud. That relay works.
On drivers side behind the wheel its mounted. Kind of across from the battery. .

http://s599.photobucket.com/albums/t...nt%3Dwheel.jpg


****Mine has 2 relays, since I have a 6 speed****** If you have 2 of them its the 2nd relay, the one further from the battery.

As far as aux mode, when you pull the codes the fan should go on.
Reply
0

Get notified of new replies

To Primary cooling fan

Tags
Back to Subforum
C4 General Discussion
View Next Unread
Can you Put 96 door panels in a 92 vette??




Click for Advanced Search
Reply Closed Thread Share
Forum Jump
Trending Topics

All times are GMT -4. The time now is 10:29 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE