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.

97 Bonneville P0300 and P0171

Thread Tools
 
Search this Thread
 
Old Mar 18, 2010 | 04:26 PM
  #11  
jtehler's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2009
Posts: 7
Likes: 0
jtehler is on a distinguished road
Default

hey guys thanks for the input, havent had much time to take a look at things myselft but luckily I was able to get it to a dealer and have it checked for free. Here'* what they found: Misfires on cylinders 3 and 6 - no spark on those. Ignition control module is apparently causing the misfires. How much would one of these run or does anyone happen to have an extra one?
Reply
Old Mar 18, 2010 | 04:56 PM
  #12  
Danthurs's Avatar
Retired Senior Admin

Expert Gearhead
 
Joined: May 2006
Posts: 29,661
Likes: 43
From: Sheboygan Wisconsin
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

3-6 would be a bad coil. Not the ICM
Reply
Old Mar 18, 2010 | 05:23 PM
  #13  
jtehler's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2009
Posts: 7
Likes: 0
jtehler is on a distinguished road
Default

hmmmm well i did swap that coil with a brand new one and there was no change at all. if the misfire is random/multiple couldn't the ICM still be at fault?
Reply
Old Mar 18, 2010 | 05:25 PM
  #14  
jtehler's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2009
Posts: 7
Likes: 0
jtehler is on a distinguished road
Default

if i remember correctly i may have a spare ICM around somewhere so ill try swapping if I come across it
Reply
Old Mar 18, 2010 | 09:26 PM
  #15  
BillBoost37's Avatar
DINOSAURUS BOOSTUS

Expert Gearhead
 
Joined: Mar 2005
Posts: 41,391
Likes: 30
From: Enfield, CT
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

Originally Posted by Danthurs
3-6 would be a bad coil. Not the ICM
Typically yes, however a bad ICM can keep the coil from firing. A GM dealership would have the equipment to test an ICM properly... versus an autozone/advance that tests them and gets suspect results.
Reply
Old Mar 18, 2010 | 09:29 PM
  #16  
Danthurs's Avatar
Retired Senior Admin

Expert Gearhead
 
Joined: May 2006
Posts: 29,661
Likes: 43
From: Sheboygan Wisconsin
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

If you swapped coils, then check the tabs on the ICM. If one of those tabs is damaged then you will need to change out the ICM.
Reply
Old Mar 19, 2010 | 09:48 PM
  #17  
jtehler's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2009
Posts: 7
Likes: 0
jtehler is on a distinguished road
Default

Good thinking, I almost missed that. I will check the tabs tomorrow. No luck on finding the spare ICM. Does anyone have an extra willing to sell?
Reply
Old Mar 29, 2010 | 12:24 PM
  #18  
jtehler's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2009
Posts: 7
Likes: 0
jtehler is on a distinguished road
Default

Finally got the new ICM and installed it yesterday. Car runs much better but there is still a ticking sound. I believe I have a bent pushrod according to the dealers diagnosis. How difficult is it to change out a pushrod? I opended up the valve cover yesterday to take a look and I think I will attempt this once I can order a new push rod.
Reply
Old Mar 29, 2010 | 12:27 PM
  #19  
BillBoost37's Avatar
DINOSAURUS BOOSTUS

Expert Gearhead
 
Joined: Mar 2005
Posts: 41,391
Likes: 30
From: Enfield, CT
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

I have a few used sets of pushrods laying around if you are looking for a low cost set.

Pushrods are relatively easy. Pull the valve covers, remove the rockers, then the pushrods can be removed and replaced. Using reusable rocker bolts, reassemble.

Oh..BTW, I have those too. Your stock bolts are torque to yield and are not reusable.
Reply
Old Mar 29, 2010 | 04:51 PM
  #20  
Mike's Avatar
Retired
Certified Car Nut
 
Joined: Jul 2003
Posts: 17,960
Likes: 1,839
From: Dark Side, AZ
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Bill make sure your "spare" parts are not what he needs. Did we notice what kind of engine he has. Or does this not make a difference what he has referencing the pushrods?
Reply



All times are GMT -4. The time now is 12:00 AM.