foamy coolant and gurgling noises - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-12-2005, 03:31 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Feb 2005
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
greg fell is on a distinguished road
Default foamy coolant and gurgling noises

My 92 SE will start to gurgle after driving a while, and it appears it may be gettinig a bit warm. I filled up the coolant the other day. It does not appear to be low. I looked in the overflow tank, where it gurgles, and there is a lot of foam in it. The coolant also appears to be dark in color, although I'm not certain.

Does the coolant just need to be flushed? I'm assuming its the original coolant. What are the procedures to do this?
greg fell is offline   Reply With Quote
Old 07-12-2005, 05:23 PM   #2
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

Your coolant is boiling. It is my guess your fans are not working. Check the fuses and relays.
J Wikoff is offline   Reply With Quote
Old 07-12-2005, 05:26 PM   #3
Senior Member
True Car Nut
 
Join Date: Jan 2004
Location: Chicago,IL MWBF '04 SURVIVOR MWBF '05 SURVIVOR Napa Manager
Posts: 3,955
Thanks: 0
Thanked 0 Times in 0 Posts
Kennginn is on a distinguished road
Default

Quote:
Originally Posted by jwikoff99
Your coolant is boiling. It is my guess your fans are not working. Check the fuses and relays.
relays are against the firewall
Kennginn is offline   Reply With Quote
Old 07-12-2005, 05:31 PM   #4
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

You may be low on coolant due to a leak. Look around for wet spots and and check the coolant level in the radiator (MAKE SURE THE CAR IS COLD FIRST).

If low fill the system back up ensuring you "burp" or release the air out of the system via the screw on the waterneck. Once you start it keep your eyes open for leaks. Then watch for leaks and keep an eye on the temp. Low speed fans come on around 215 and high speed come on at around 225. Do not let it overheat if they do not seem to come on.

If it isn't low then start it up and check your fans. Low speed fans come on around 215 and high speed come on at around 225. Do not let it overheat if they do not seem to come on.
BillBoost37 is offline   Reply With Quote
Old 07-12-2005, 05:39 PM   #5
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Feb 2005
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
greg fell is on a distinguished road
Default

Could it be a faulty radiator cap?

And, what causes the foam?

Also, it boils at highway speeds. I'd expect airflow to be enough.
greg fell is offline   Reply With Quote
Old 07-12-2005, 06:29 PM   #6
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

If you don't have enough coolant, then it could boil at any speed. No coolant..no cooling.

Next time it is cold, take off the radiator cap. It should be full. If it'* full and you are gurgling you probably have a bad head gasket. However usually we don't think about this because 3.8'* having head gasket problems are extremely rare.
BillBoost37 is offline   Reply With Quote
Old 07-12-2005, 06:43 PM   #7
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Feb 2005
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
greg fell is on a distinguished road
Default

I'm almost certain it is full. I will check again tonight.
greg fell is offline   Reply With Quote
Old 07-12-2005, 10:11 PM   #8
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

Being that this is a 92 there are 3 things I want you to check....

First the thermostat, with this cars age its possible that the thermostat is sticking shut...


Second, Look under the alternator, there will be a hose under it, Check it for leaks


Third, while you are checking that hose ( Water Pump Bypass Hose ) Look at the fitting in the intake manifold, in 92 these were plastic and usually over the years will fracture causing a leak... If it has been replaced it should be metal... You may not be able to check these very well with the alternator in place...

Also when the car starts to get good and warm, 220-227F both fans should cycle on and bring the temps back down...

Also just because the overflow is full does not mean the radiator is, please check it as well... If after of of this the car is still overheating that I would suspect the thermostat if it hasn't been replaced yet...

Good Luck

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 07-13-2005, 02:13 PM   #9
Senior Member
Certified GM nut
 
Join Date: Feb 2004
Location: CT
Posts: 2,099
Thanks: 0
Thanked 1 Time in 1 Post
SSEBONNE4EVA is on a distinguished road
Default boil

How old is the coolant.
Could be worn out coolant and a clogged radiator.
You allways do well to check for leaks as Jr stated then do a total flush and re- fill when you have cooling problems.
SSEBONNE4EVA is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
96 bonneville gurgling noise misbal Pontiac 4 02-20-2012 01:57 AM
Gurgling in engine bay 01bonne 2000-2005 4 05-16-2008 01:29 AM
Foamy speaks the truth!(PG-13, language) sse1990 Lounge 0 09-01-2005 11:02 PM
gurgling sound in the dash silver98SE 1992-1999 2 04-22-2005 02:28 AM
Foamy's Rant MOS95B Lounge 2 10-26-2003 08:45 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:13 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.