98 Bonneville head gasket - 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 05-10-2007, 05:47 PM   #1
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: May 2007
Location: Virginia, Minnesota
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
jumackey is on a distinguished road
Default 98 Bonneville head gasket

Can someone give me a step by step fix it explaination? I have some mechanical knowledge... Basically if I can fix it its mine for free so I have nothing to lose! A friend of mine had the car and brought it in and they said it was the head gasket. So he bought a new car instead of fixing the bonne. I dont feel like buying a chilton manual so this is my way of saving 30 bucks
jumackey is offline   Reply With Quote
Old 05-10-2007, 05:53 PM   #2
Junior Member
 
Join Date: Mar 2004
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
harofreak00 is on a distinguished road
Default

ill bet you $50 it isnt a head gasket

what model bonne is this? SE SLE or SSEi

it is probably the upper intake manifold failure

read this
http://www.bonnevilleclub.com/forum/...e=article&k=38
harofreak00 is offline   Reply With Quote
Old 05-10-2007, 06:01 PM   #3
Senior Member
True Car Nut
 
Join Date: Jul 2004
Location: Grand Rapids, Mi
Posts: 5,656
Thanks: 0
Thanked 0 Times in 0 Posts
Archon is on a distinguished road
Default

I agree with Haro. Head gaskets failing is virtually unheard of on these engines!
Archon is offline   Reply With Quote
Old 05-10-2007, 06:26 PM   #4
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

http://www.bonnevilleclub.com/forum/...e=article&k=38

Read this... It will explain a lot to you...

May have even gotten you a good car for the price of some Parts...

and get the oil changed ASAP

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 05-10-2007, 10:34 PM   #5
Senior Member
True Car Nut
 
Join Date: Mar 2004
Location: Ames, Iowa
Posts: 3,066
Thanks: 0
Thanked 1 Time in 1 Post
bill buttermore is on a distinguished road
Default

And, either check out Chilton'* 28200 from a local lending library or spend the $20 to buy it. You will not spend $20 more wisely on your car.
bill buttermore is offline   Reply With Quote
Old 05-10-2007, 10:38 PM   #6
Senior Member
Posts like a Corvette
 
Join Date: Feb 2007
Location: Sanford Michigan
Posts: 1,200
Thanks: 0
Thanked 0 Times in 0 Posts
crash93ssei is on a distinguished road
Default

I agree, I buy the manual for EVERY car that I buy, absolutely worth the $20.
crash93ssei is offline   Reply With Quote
Old 05-10-2007, 11:36 PM   #7
Senior Member
True Car Nut
 
Join Date: Jul 2004
Location: Grand Rapids, Mi
Posts: 5,656
Thanks: 0
Thanked 0 Times in 0 Posts
Archon is on a distinguished road
Default

Absolutely. If you are to do any serious work on your car, at least a Chilton'* is needed.
Archon is offline   Reply With Quote
Old 05-11-2007, 12:14 AM   #8
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: May 2007
Location: Virginia, Minnesota
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
jumackey is on a distinguished road
Default

its an SE and I just picked up the chilton 28200 manual... So how would I find out if its the UIM or head gasket? My friend said his car was overheating and brought it in and they determined head gasket (its a small local two-man shop) and now it wont start. so its in my garage now. I drained the oil and coolant. what next?
jumackey is offline   Reply With Quote
Old 05-11-2007, 02:18 AM   #9
Senior Member
True Car Nut
 
Join Date: Mar 2004
Location: Ames, Iowa
Posts: 3,066
Thanks: 0
Thanked 1 Time in 1 Post
bill buttermore is on a distinguished road
Default

The car was overheating. Was the coolant low? Did the shop use a hydrocarbon sniffer in the radiator or coolant tank to determine that a head gasket had failed? Not impossible, but head gaskets hardly ever fail on the 3800s.

Good that you got the Chilton'*. Now read Techinfo 38 and also read the links on UIM/LIM gasket replacement at the end of the Techinfo 38 article linked for you above. Remove the UIM and examine the EGR bore area for softness and warpage on the sealing surfaces. Remove the LIM and change out the gaskets for the GM aluminum ones. There are many, many articles here on BC that you can find using the search feature that will let you know what to expect. Changing out the UIM, LIM gaskets, and coolant elbow will cost you about $200. If the car still has a coolant leak and overheats, and you have to go back in to change the head gaskets, you will be able to re-use all the new parts you installed on the top end. On the very small chance that you will need to go back in, go sparingly on the rtv in the corners only of the LIM gaskets and side rail pieces. That way, you can remove the LIM from the block and heads more easily without damaging them.
bill buttermore is offline   Reply With Quote
Old 05-11-2007, 02:17 PM   #10
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: May 2007
Location: Virginia, Minnesota
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
jumackey is on a distinguished road
Default

alright I talked to my friend again he said he had just installed a new water pump. and that didnt fix the coolant leak and overheating problem. So I'm assuming after reading the tech38 that its the UIM LIM. Am I going to need any special tools other than the basics? Or any tool that would make my life easier going into this? Note I'm limited to brakes, water pumps, alternators, and things that you cant screw up on cars....
jumackey is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1998, weird water issue (intake gasket or head gasket?) jtnc98 1992-1999 6 03-17-2009 08:14 PM
How can I diagnose a blown head gasket? Maybe LIM gasket? rstrunk 1992-1999 6 03-15-2009 10:24 PM
Anyone ever use Mr Gasket Ultra exhaust gasket material? agrazela General GM Chat 0 03-03-2008 10:38 PM
(warped head, new car hunt) head gasket on 88 voyager (2.5L) harofreak00 Lounge 47 02-01-2007 02:10 AM
95 SE...blown head gasket, price is right, stay away or not? crzydmnd72 1992-1999 2 01-30-2004 05:45 PM


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 01:19 PM.


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.