Engine problems

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, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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DeanLamb
LE Member
Posts: 1
Joined: Mon Oct 07, 2024 12:01 pm
Year and Trim: 1999 Pontiac Bonneville SLE

Engine problems

Post by DeanLamb »

My 1999 Pontiac Bonneville SLE shuts off or runs rough after it runs for 20 minutes or more. I can't figure out why?From, Dean Lamb
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Pair of SSEI
SSEi Member
SSEi Member
Posts: 157
Joined: Tue Aug 25, 2009 8:38 pm
Year and Trim: 1997 SSEI 40th

Re: Engine problems

Post by Pair of SSEI »

Cam or crank sensor.
1997 SSEI 3.8 L67 149,000 miles Moonroof, Polished Gen V w/L32 intake, 3.5 mod. Pulley, SD Headers, Intense Stage 1 tune, MagnaFlow Cat 94109, Catco catback, Autolite 103s, 180 stat, Intense FWI, 1995 OEM trans cooler, Cleared corners. KYB Excel G struts and shocks.


2006 Malibu SS 3.9 60 degree V6, Variable Valve, Tap shift Trans, 100,000 miles Bone stock

SOLD - 1992 SSEI FWI PEM Catco Cat NGK TR55 180 stat Original owner 209,000 miles Original Engine and Trans - Still strong when she left
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