Engine Lagging, rpms drop from 900 to 4-500
Registered User
Joined: Jul 1999
Posts: 3,647
From: Winnipeg, Manitoba, Canada
Re: Engine Lagging, rpms drop from 900 to 4-500
Originally Posted by live4therush
No it shouldnt be the opti, i just replaced the opti, coil, ignition module, plugs, wires, and map sensor about 6-7000 miles ago. so im thinking it cant be anyone of those. Dont think its runnin rich, not that i can notice anyways. When the opti is goin it will throw codes and mine isnt throwin any.
I had an opti go bad on me last year. Replaced it with a brand new one from GM. The new one lasted a week before it started dying. Replaced it again under warranty...next one was a DOA.
I've swapped over 10 optis over the years on friend's cars. They can last 60,000 miles or be DOA.
If the car is running rich, I would check ignition and fuel psi.
If there is no black smoke or scanner doesn't show high mV, then go with Injuneer's recommendation.
Registered User
Joined: Jun 2001
Posts: 57
From: cape cod
Re: Engine Lagging, rpms drop from 900 to 4-500
I had the samething happen to my car. When was the last time you changed your fuel filter. I changed the filter and it went away. maybe its something simple
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