Rough at idle & low speed

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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RegencyRoyale
SSE Member
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Posts: 108
Joined: Fri May 23, 2008 9:17 pm
Year and Trim: 1995 Oldsmobile Eighty Eight Royale LS

Rough at idle & low speed

Post by RegencyRoyale »

The past week I've noticed sometimes on start up the car runs rough, shakes a little, like a "put put put" sound. On pick-up it does it too, but around 40-50mph it stops and runs as normal. There are no warning lights or anything glowing. I do know there is a hole in the muffler that has been getting worse and makes some of the noice and vibration but I don't know if it would really cause this sorta issue or not...Not much to go on but just thought I'd ask if anyone had any thoughts...
Last edited by RegencyRoyale on Tue Jun 02, 2009 9:35 pm, edited 1 time in total.
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1fatcat
Posts like an L67
Posts like an L67
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Joined: Mon Mar 30, 2009 11:18 pm
Year and Trim: before cars
Location: Zimmerman, MN

Re: Rough at idle & low speed

Post by 1fatcat »

plugs, wires, fuel pressure regulator, fuel & air filters? When was the last tune up and what was done?
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RegencyRoyale
SSE Member
SSE Member
Posts: 108
Joined: Fri May 23, 2008 9:17 pm
Year and Trim: 1995 Oldsmobile Eighty Eight Royale LS

Re: Rough at idle & low speed

Post by RegencyRoyale »

I have no idea. The original engine failed last year and so a used one went in. Came with no maintenance records. I just know it's from a cared for car. Since that time there hasn't been much use, maybe a few hundred miles. 106,000 miles on the engine.
Last edited by RegencyRoyale on Fri Jun 12, 2009 2:00 am, edited 3 times in total.
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