Running Lean?
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Junior Member
Joined: Aug 2007
Posts: 45
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From: Swartz Creek, Michigan
Car: 1988 Pontiac Trans Am GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: GM 9-Bolt
Running Lean?
Hey guys got a question I checked out my car with the OBD1 and my car read lean, is there someway i can change that?
Joined: Jan 2002
Posts: 757
Likes: 10
From: Middle of MI
Car: 1989 Trans Am GTA
Engine: Stock LS1
Transmission: T56
Axle/Gears: 3.70 9 bolt
Re: Running Lean?
Add fuel??
I assume you mean to say there was a lean condition code stored? If so, there is either a vacuum leak somewhere, letting in unmetered air, or you have a fuel supply issue.
Checking for a vacuum leak would be easier, with the engine running, spray some brake clean around the engine. This will get sucked into the engine if there is a leak and cause the idle to change, you'll know it when it happens. The brake clean will quickly evaporate, so you don't have anything on your engine when you are done.
I assume you mean to say there was a lean condition code stored? If so, there is either a vacuum leak somewhere, letting in unmetered air, or you have a fuel supply issue.
Checking for a vacuum leak would be easier, with the engine running, spray some brake clean around the engine. This will get sucked into the engine if there is a leak and cause the idle to change, you'll know it when it happens. The brake clean will quickly evaporate, so you don't have anything on your engine when you are done.
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