Post rebuild problems.... - 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 11-13-2006, 05:15 PM   #1
Junior Member
Thread Starter
 
Join Date: Nov 2006
Location: Laguna Hills, CA
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
starcarlover is on a distinguished road
Default Post rebuild problems....

(112k on Bonneville) Approx. 15k ago I got the supercharger rebuilt. I did all the work myself except I had texas tbirds press out and replace the bearings. The Bonneville ran fine afterwards. A couple of weeks ago a problem appeared that I cannot track down. The car begins to "shudder" or "chugg" when I approach half boost. If I accelerate slowly this symptom appears at greater boost level. I cannot source a problem.

Another problem is the coupler appears to be failing again (the rattle when running which goes away under acceleration and play with the belt off). This seems to be an extremely short lifespan for this coupler. The oil level in the SC is fine. Does anyone know of a reason as to why this would happen?

Any help would be greatly appreciated. Thank you. Quest :(
starcarlover is offline   Reply With Quote
Old 11-13-2006, 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

In experience with my car, I've had a similar shudder caused by two things.

1: Dying fuel pump. It would lose pressure under high demand when it got warm.
2: Dying tranny (TCC solenoid) and did it cold and warm.

Could also be a miss. Have your fuel pressure tested with the vac line off the FPR when the car is nice and hot to try and rule out #1.

I think #2 would give a code. Have it scanned or do the paper clip trick found in techinfo. The TCC code might not turn on the SES light, I can't remember.



The coupler could fail early, I suppose. I don't know what specifically would cause early failure, other than a weak coupler.

With the belt on, can you grab the belt and move it so any pulleys rotate some? If so, it could be the harmonic balancer dying. Look for cracks in the rubber on the crank pulley.
J Wikoff is offline   Reply With Quote
Old 11-13-2006, 05:28 PM   #3
Junior Member
Thread Starter
 
Join Date: Nov 2006
Location: Laguna Hills, CA
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
starcarlover is on a distinguished road
Default More info...

Thank you for the reply. I forgot to mention there are no codes posting and I did replace the fuel filter. The symptoms did not change. I will get the fuel pressure tested, but what is the FPR ?
starcarlover is offline   Reply With Quote
Old 11-13-2006, 06:03 PM   #4
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

Fuel pressure regulator. It is on the fuel rail, tucked behind the throttle body. You can pull the vac line off it straight up. And if there is any fuel in the line that means you need a new FPR.

There are some codes the PCM will store that won't turn on the SES light.
J Wikoff is offline   Reply With Quote
Old 11-13-2006, 08:33 PM   #5
Senior Member
True Car Nut
 
Join Date: Aug 2004
Location: In your garage, swipin' da lug nutz
Posts: 3,067
Thanks: 0
Thanked 0 Times in 0 Posts
sandrock is on a distinguished road
Default

Quote:
Originally Posted by J Wikoff
There are some codes the PCM will store that won't turn on the SES light.
Indeed. Code 39 - Torque Converter Clutch Problem - will not turn on SES light. I should know this as my trans is now on it'* deathbed and displays this constantly, even after trying to clear it.
sandrock is offline   Reply With Quote
Old 11-13-2006, 10:47 PM   #6
Senior Member
Posts like a 4 Banger
 
Join Date: Oct 2006
Posts: 141
Thanks: 0
Thanked 0 Times in 0 Posts
motorhead is on a distinguished road
Default

willwren seems to know a lot about these things, maybe you should PM him?
motorhead is offline   Reply With Quote
Old 11-13-2006, 10:54 PM   #7
Senior Member
Certified GM nut
 
Join Date: May 2005
Location: Wickliffe, Ohio
Posts: 2,155
Thanks: 0
Thanked 0 Times in 0 Posts
McGrath is on a distinguished road
Default

Have you checked your catalytic converter? Sounds like that may be the issue mine sure felt really werid when it was going and took alittle bit to track down.

Ed
McGrath is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Trans problems after rebuild wachtman 1992-1999 3 01-14-2013 11:37 PM
Top End Rebuild * NEW Q's * last post statusplease 1992-1999 18 04-11-2008 12:37 AM
Engine Rebuild Post whw97ville 1992-1999 3 06-24-2007 02:14 PM
Problems, Problems, Problems... swartlkk 2000-2005 2 11-04-2005 08:57 PM
problems, problems, problems big_boss2010 1992-1999 15 04-25-2004 09:05 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 07:54 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.