GM Forum - Buick, Cadillac, 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.

Ignition Blunders

   
Old 05-11-2005, 12:57 AM
  #1  
Senior Member
Certified GM nut
Thread Starter
 
russianpolarbear's Avatar
 
Join Date: Apr 2003
Location: Davison,Michigan
Posts: 1,867
Likes: 0
Received 0 Likes on 0 Posts
russianpolarbear is on a distinguished road
Default Ignition Blunders
1993 Pontiac Bonneville SE 3800 N/sc

If my car sits for a while it starts up and operates great for about 5 min. Then, it will chug under load and have irratic rpm. It almost feels like its trying to grab a gear but it isnt just feels like that. When I slam on the gas from a dead stop I get *chug chug chug chug vrooom chug chug*. My coil packs tested good, brand new tps, fairly new plugs and wires,new o2sensor. Whats the deal? Need Ideas Im out of em.
russianpolarbear is offline  
Reply Like
Old 05-11-2005, 08:31 AM
  #2  
Junior Member
Posts like a V-Tak
 
Marmot's Avatar
 
Join Date: Apr 2005
Location: Breezy Point, MN
Posts: 25
Likes: 0
Received 0 Likes on 0 Posts
Marmot is on a distinguished road
Default
[shoots from hip] Have you checked the fuel pump and fuel filter? [/shoots from hip]

Marmot
Marmot is offline  
Reply Like
Old 05-11-2005, 08:39 AM
  #3  
Senior Member
True Car Nut
 
opensourceguy's Avatar
 
Join Date: Apr 2004
Location: Three Oaks, Michigan
Posts: 4,879
Likes: 0
Received 0 Likes on 0 Posts
opensourceguy is on a distinguished road
Default
Have you checked with a DIFFERENT ICM/Coils? Just because it tested, doesn't mean it'* good. That test is usually inaccurate unfortunately.


-justin
opensourceguy is offline  
Reply Like
Old 05-11-2005, 10:18 AM
  #4  
Senior Member
Certified Car Nut
 
MOS95B's Avatar
 
Join Date: Jul 2003
Location: Robbinsdale, MN
Posts: 15,408
Likes: 0
Received 0 Likes on 0 Posts
MOS95B is on a distinguished road
Default
I'm voting fuel flow too (gut feeling) based on the "If it sits for a while..." statement
MOS95B is offline  
Reply Like
Old 05-11-2005, 10:29 AM
  #5  
Junior Member
Posts like a Ricer Type-R
 
willwren's Avatar
 
Join Date: Aug 2002
Posts: 11
Likes: 0
Received 4 Likes on 4 Posts
willwren is on a distinguished road
Default
Vacuum leak.
willwren is offline  
Reply Like
Old 05-11-2005, 02:47 PM
  #6  
Senior Member
Certified GM nut
Thread Starter
 
russianpolarbear's Avatar
 
Join Date: Apr 2003
Location: Davison,Michigan
Posts: 1,867
Likes: 0
Received 0 Likes on 0 Posts
russianpolarbear is on a distinguished road
Default
Well Its a new fuel pump.... but i havent changed the filter for a long while....
russianpolarbear is offline  
Reply Like
Old 05-11-2005, 10:28 PM
  #7  
Senior Member
True Car Nut
 
Damemorder's Avatar
 
Join Date: Nov 2002
Location: Texarkana, Texas
Posts: 6,042
Likes: 0
Received 0 Likes on 0 Posts
Damemorder is on a distinguished road
Default
Vacuum Leak.
Damemorder is offline  
Reply Like
Old 05-11-2005, 10:45 PM
  #8  
Senior Member
Certified Car Nut
 
J Wikoff's Avatar
 
Join Date: Mar 2003
Posts: 12,433
Likes: 0
Received 2 Likes on 2 Posts
J Wikoff is on a distinguished road
Default
I'm gonna 3rd the vacuum leak.
J Wikoff is offline  
Reply Like
Old 05-12-2005, 03:05 AM
  #9  
Senior Member
Certified GM nut
Thread Starter
 
russianpolarbear's Avatar
 
Join Date: Apr 2003
Location: Davison,Michigan
Posts: 1,867
Likes: 0
Received 0 Likes on 0 Posts
russianpolarbear is on a distinguished road
Default
Any key areas to check? known areas of problems?
russianpolarbear is offline  
Reply Like
Old 05-12-2005, 07:53 AM
  #10  
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Likes: 0
Received 8 Likes on 8 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 mention filter in a long time. Wouldn't be a bad thing to do while you are working on the car.
BillBoost37 is offline  
Reply Like

Thread Tools
Search this Thread
Search this Thread:

Advanced Search

Advanced Search
Quick Reply: Ignition Blunders


Reply Closed Thread Share

All times are GMT -4. The time now is 04:04 PM.