Go Back   Chevrolet Forum - Chevy Enthusiasts Forums > General Discussion Forums > General Tech
Sign in using an external account
Register Forgot Password?
Search

General Tech Good at troubleshooting? Have a non-specific issue? Discuss general tech topics here. IF YOUR QUESTION IS SPECIFIC TO A CERTAIN MODEL, IT DOES NOT GO IN THIS SECTION.

Reply
 
 
 
 
LinkBack Thread Tools
  #1  
Old 02-16-2011, 03:36 PM
CF Beginner
 
Join Date: Feb 2011
Posts: 4
Default 2000 Impala over heating

All of a sudden my impala keeps over heating.
I have replaced the thermostat, waterpump, and intake gasket. I have flushed the system several times and water seems to flow through ever part just fine when using a garden hose but will not flow with the car running. There is no coolant leaking into the oil, on the ground, or inside the car. I have opened the bleeder valves to let the air out but it seems I cannot get it all out.

Does this mean I must have a cracked head or block or some other internal problem?

What should I try next?

Thank you!
Register today for free or log-in if already registered to remove this ad!
Reply With Quote
  #2  
Old 02-16-2011, 09:42 PM
RacerX's Avatar
CF Veteran
 
Join Date: Aug 2010
Location: New York City USA
Posts: 1,053
Default

Dont know, but DOES THE FAN COME ON? BAD FAN RELAY WILL DO IT EVERYTIME.
__________________
"

"My 98 Oldsmobile is so Super Sperrrrrrrrm! Suckers to the side I know you hate...my 98!! You gonna get yours! Get with it, the ultimate homeboy car."

Public Enemy "You Gonna Get Yours"
Reply With Quote
  #3  
Old 02-16-2011, 09:50 PM
CF Beginner
 
Join Date: Feb 2011
Posts: 4
Default

Yes the fans are functioning properly. Seems as tho the system keeps getting full ofair and won't circulate water.
Reply With Quote
  #4  
Old 02-17-2011, 07:41 AM
RacerX's Avatar
CF Veteran
 
Join Date: Aug 2010
Location: New York City USA
Posts: 1,053
Default

Are you losing coolant? If you arent losing it then the block isnt cracked. It either goes in the motor or out onto the ground.

Now do BOTH fans come on? Where did you run the hose? Through the radiator? Does it bubble up in the overflow when the radiator cap is on? When the Temp gauge says hot see it both fans are on and blow HIGH. Look for air bubbles in the overflow. Check the springs on the radiator cap. They shouldnt be touching. Did you put the right thermostat in? The right way?

The water pump circulates the coolant. Under pressure the air should move toward the low point in the system which is the overflow tank. But if the cap isnt working the system cant pressurize and it may look like it overheating.

And how did you mix it? Was it pre-mixed or did you have to add water? 50/50?
__________________
"

"My 98 Oldsmobile is so Super Sperrrrrrrrm! Suckers to the side I know you hate...my 98!! You gonna get yours! Get with it, the ultimate homeboy car."

Public Enemy "You Gonna Get Yours"

Last edited by RacerX; 02-17-2011 at 07:44 AM.
Reply With Quote
  #5  
Old 02-17-2011, 08:45 AM
CF Beginner
 
Join Date: Feb 2011
Posts: 4
Default

Quote:
Originally Posted by RacerX View Post
Are you losing coolant? If you arent losing it then the block isnt cracked. It either goes in the motor or out onto the ground.

Now do BOTH fans come on? Where did you run the hose? Through the radiator? Does it bubble up in the overflow when the radiator cap is on? When the Temp gauge says hot see it both fans are on and blow HIGH. Look for air bubbles in the overflow. Check the springs on the radiator cap. They shouldnt be touching. Did you put the right thermostat in? The right way?

The water pump circulates the coolant. Under pressure the air should move toward the low point in the system which is the overflow tank. But if the cap isnt working the system cant pressurize and it may look like it overheating.

And how did you mix it? Was it pre-mixed or did you have to add water? 50/50?
Both fans do run on high once it gets hot.
I have flushed water through the radiator, heater core, and every hose.
Right now It is just water, no coolant.
I am loosing water. I do not see any on the ground and none comming out the exhaust. I replaced the radiator cap just to rule that out. The new 1 seemed to be blowing water out from around the cap. I put the old cap back on and it does not blow water out. That may be the only reason I was loosing water, not sure yet. The springs arre not touching on either cap.
I do get bubbles in the overflow.
Reply With Quote
  #6  
Old 02-17-2011, 11:33 AM
CF Senior Member
 
Join Date: Nov 2010
Posts: 368
Default over heating

Try bleeding the system with the front of the car 2-3 ft higher than normal,drive it up on a bank ect.
Reply With Quote
  #7  
Old 02-22-2011, 09:24 PM
CF Beginner
 
Join Date: Feb 2011
Posts: 4
Default

OK so I finally got the time to mess with it some more. I tried bleeding it again with the car parked on a incline. Luckly I have a very steep driveway. Still no luck. It seems like no matter how much air I bleed out, more is there. Dowes this mean a cracked block?
Reply With Quote
  #8  
Old 02-23-2011, 05:48 AM
RacerX's Avatar
CF Veteran
 
Join Date: Aug 2010
Location: New York City USA
Posts: 1,053
Default

If you get bubbles in the overflow when the car is hot, it is indicative of a failed had gasket.
__________________
"

"My 98 Oldsmobile is so Super Sperrrrrrrrm! Suckers to the side I know you hate...my 98!! You gonna get yours! Get with it, the ultimate homeboy car."

Public Enemy "You Gonna Get Yours"
Reply With Quote
Old 02-23-2011, 05:48 AM
 
 
 
Reply

Tags
02, 2000, bubbles, cap, car, cavalier, chevy, heat, impala, make, oil, overflow, overheating, tank, tracker


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Join Chevroletforum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -5. The time now is 11:46 AM.

Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.

Emails Backup