L27 pinging 94 LeSabre

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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redmetrix
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Year and Trim: 1997 SLE factory L67, stock
1992 SSEi
1990 GP SE
Location: Sherwood, WI

L27 pinging 94 LeSabre

Post by redmetrix »

I've been driving a 94 LeSabre for the winter and the motor has recently starting pinging while under load. At first, I thought it was maybe some bad gas, but after going through a couple more fill ups, I knew the pinging was here to stay. No check engine light. If you accelerate with a light throttle, no ping. But a little more throttle will cause the ping. 81,000 miles on the car with original drive train. It runs excellent otherwise. Any ideas?
Chris
97 SLE with L67 (1 of 354!) * 90 Grand Prix SE * 1992 SSEi * 99 Buick Regal * 2006 Chevy Uplander
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MattStrike
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Re: L27 pinging 94 LeSabre

Post by MattStrike »

How are the plugs/wires and coils?
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redmetrix
Posts like an LN3
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Posts: 450
Joined: Fri Jun 27, 2008 9:16 pm
Year and Trim: 1997 SLE factory L67, stock
1992 SSEi
1990 GP SE
Location: Sherwood, WI

Re: L27 pinging 94 LeSabre

Post by redmetrix »

MattStrike wrote:How are the plugs/wires and coils?
Good question, I've driven the car about 3500 miles since I've had it but have not checked out the plugs, wires, and coils.
Chris
97 SLE with L67 (1 of 354!) * 90 Grand Prix SE * 1992 SSEi * 99 Buick Regal * 2006 Chevy Uplander
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PLAGUE PHANTOM
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Year and Trim: 1968 Chevrolet Bel Air
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Re: L27 pinging 94 LeSabre

Post by PLAGUE PHANTOM »

Sounds like spark knock....it wouldn't hurt to change the plugs and get some Belden wires.
1997 Bonneville SLE...(SilverStreak)...Totaled...1/25/13...Gone but not forgotten.
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