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

Car Still Hot after Electric Water Pump

Thread Tools
 
Search this Thread
 
Old 08-14-2006, 10:58 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (2)
 
TAEnvy's Avatar
 
Join Date: Aug 2005
Location: DFW
Posts: 1,651
Likes: 0
Received 1 Like on 1 Post

Default Car Still Hot after Electric Water Pump

Okay guys I installed my CSR electric water pump and im not leaking any fluid and I bled all the air out of the cooling system. The car is still running hot though. It will get really hot then all of the sudden drop Way back down to like 170. It does that the first time then it will get way close to 260 then it just inches back up the the red. I know the pump isnt faulty because I tested it right when I installed it and it ran.
I wired it up with a relay and the trigger is the fans. Should I run my trigger from something else or maybe draw my power from something else? Do you think a 160* thermo would solve the problem
__________________
Old 08-14-2006, 11:26 PM
  #2  
Teching In
 
artic's Avatar
 
Join Date: Feb 2006
Location: stayton,oregon
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Default

If i had to bet i would say its a thermostat. DId it have a problem before the ewp install ??? My grandpa had a car that was crazy it would never be the same temp. It would get hot then drop quickly and then heat back up,even with rpms changing. Just a though man
Old 08-14-2006, 11:28 PM
  #3  
Staging Lane
 
teamguru69's Avatar
 
Join Date: May 2006
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
Default

a new thermo will do nothing unless you tune for it...i think getting a 160* and tuning your fans to come on sooner will fix your problem
Old 08-15-2006, 06:07 AM
  #4  
TECH Apprentice
iTrader: (5)
 
titter's Avatar
 
Join Date: Sep 2005
Location: Fort Myers, FL
Posts: 349
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by teamguru69
a new thermo will do nothing unless you tune for it...i think getting a 160* and tuning your fans to come on sooner will fix your problem
Not true. You can goto a 160 stat without tuning anything ... a thermostat is a mechcanical part. You should however have your fans tuned to come on earlier.
Old 08-15-2006, 04:06 PM
  #5  
TECH Fanatic
Thread Starter
iTrader: (2)
 
TAEnvy's Avatar
 
Join Date: Aug 2005
Location: DFW
Posts: 1,651
Likes: 0
Received 1 Like on 1 Post

Default

well i was told that i should have wired it to something else? What is a good source that is always on when the key is on? Also can you give me some hints on how to wire it to said source? I am a freakin idiot when it comes to electrical work and wiring, all that crap is just bway over my head.
Old 10-22-2006, 06:49 PM
  #6  
On The Tree
 
freshmanit's Avatar
 
Join Date: Jul 2006
Location: USS Abraham Lincoln
Posts: 101
Likes: 0
Received 0 Likes on 0 Posts
Default

Could wire a relay off the line to the fuel pump. Makes for a good trigger. I plan on doing that, once I can get this stupid impeller out of the stock pump. Any tips? lol.
Old 10-22-2006, 06:56 PM
  #7  
TECH Addict
iTrader: (9)
 
buffman's Avatar
 
Join Date: Nov 2004
Location: Kzoo, MI
Posts: 2,289
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by titter
Not true. You can goto a 160 stat without tuning anything ... a thermostat is a mechcanical part. You should however have your fans tuned to come on earlier.

you're not going to see the full benefits of using a 160* T-stat without programming. Hence when they're mentioned hand in hand..

Check T-stat, and correct fan operation.
Old 10-22-2006, 10:25 PM
  #8  
On The Tree
 
UnitZ28's Avatar
 
Join Date: Aug 2006
Posts: 173
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by freshmanit
Could wire a relay off the line to the fuel pump. Makes for a good trigger. I plan on doing that, once I can get this stupid impeller out of the stock pump. Any tips? lol.
beat the crap out of it
Old 10-23-2006, 02:46 AM
  #9  
Launching!
iTrader: (20)
 
marc1130's Avatar
 
Join Date: Jun 2005
Location: Clarksville, MD
Posts: 264
Likes: 0
Received 0 Likes on 0 Posts

Default

Ignition fuse in the fuse box worked for me.
Old 10-23-2006, 02:58 AM
  #10  
TECH Regular
 
sssalah's Avatar
 
Join Date: Feb 2003
Location: Bahrain
Posts: 444
Likes: 0
Received 1 Like on 1 Post

Default

It's wired to be triggered by the fans? So when the car is moving the fans are off and water pump is off? I've used the air pump relay for powering my ewp, so it works with the ignition.
Old 10-23-2006, 03:13 AM
  #11  
12 Second Club
 
93_z28's Avatar
 
Join Date: Mar 2005
Location: Lincoln CA
Posts: 267
Likes: 0
Received 0 Likes on 0 Posts
Default

i wired mine to a switch that also turns on the starter,that way i cant forget to turn on my waterpump.

also if you tested th CSR make sure the impeller didnt come onscrewd a little.i had that happen to me when i used a csr and it finaly froze up on my in the stageing lane.its also a good idea to take a dremal to the inside of your waterpump housing to make sure the inpeler wont come into contact with anything bbecause if it does it will come onscrewd and blow a fuse
Old 10-23-2006, 03:15 AM
  #12  
12 Second Club
 
93_z28's Avatar
 
Join Date: Mar 2005
Location: Lincoln CA
Posts: 267
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by sssalah
It's wired to be triggered by the fans? So when the car is moving the fans are off and water pump is off? I've used the air pump relay for powering my ewp, so it works with the ignition.
i missed that part lol,thats most likely your problem
Old 10-23-2006, 11:38 AM
  #13  
TECH Fanatic
 
streetwarrior96's Avatar
 
Join Date: Feb 2006
Posts: 1,119
Likes: 0
Received 0 Likes on 0 Posts

Default

also have your radiator flushed and I don't mean buying that fluid that youput in to flush. Have them open it and individually clean the lines.
Old 10-23-2006, 06:58 PM
  #14  
On The Tree
 
JimboManJones's Avatar
 
Join Date: Nov 2005
Posts: 192
Likes: 0
Received 0 Likes on 0 Posts
Default

Def sounds like a faulty thermostat to me...
Old 10-23-2006, 07:12 PM
  #15  
Launching!
iTrader: (20)
 
marc1130's Avatar
 
Join Date: Jun 2005
Location: Clarksville, MD
Posts: 264
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by JimboManJones
Def sounds like a faulty thermostat to me...
LOL, no its because his water pump is not on all the time, it is triggered by the fans!
Old 10-23-2006, 08:04 PM
  #16  
Teching In
 
fbodyracing1's Avatar
 
Join Date: Jun 2006
Posts: 48
Likes: 0
Received 0 Likes on 0 Posts
Default

i have question i just bout my car 95 trans am when i ferst fire it up it run for about 4 min then the fans come on. would someone have program that to do that or is that what they all way do
Old 10-23-2006, 08:06 PM
  #17  
Launching!
iTrader: (20)
 
marc1130's Avatar
 
Join Date: Jun 2005
Location: Clarksville, MD
Posts: 264
Likes: 0
Received 0 Likes on 0 Posts

Default

they dont come on until around 185 degrees, but even then the computer kind of screws up. I am trying to install a jet fan switch but no one seems to know how to install it and it didn't come with instructions.

EDIT: Yea I mean after the jet chip fan switch, which i dont know where the sensor goes.

Last edited by marc1130; 10-23-2006 at 08:13 PM.
Old 10-23-2006, 08:12 PM
  #18  
12 Second Club
 
Ls1Bait's Avatar
 
Join Date: Jun 2005
Location: Chitown
Posts: 1,119
Likes: 0
Received 0 Likes on 0 Posts
Default

Are you on a stock tune cause then your fans dont come on till like 230* that would explain the problem. I also have a csr electic pump its great and better than the stock. I have mine wired in a relay and then to the ignition so it comes before the motor is even on
Old 10-23-2006, 08:26 PM
  #19  
TECH Addict
iTrader: (25)
 
DopdBrd's Avatar
 
Join Date: Nov 2004
Location: Garden City, KS
Posts: 2,529
Likes: 0
Received 0 Likes on 0 Posts
Default

Mine did the same thing even with a 160 degree thermo. I added a fan switch which helped it a little, but nothing was ever solved until I got a tune and had the fans switched on earlier. Then, it finally stayed cool all the time.

Basically, get a tune or use a hypertech to turn your fans on sooner.




All times are GMT -5. The time now is 03:03 AM.