No power below 3000 rpm
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Junior Member
Joined: Nov 2008
Posts: 8
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No power below 3000 rpm
My 91 3.1 seems really gutless below about 3000 rpm. You really have to floor it to get it move. Hard work driving 'round town. Lousy city mpg too. Once its up and rolling its fine. Above 40 mph, it goes like a 'brick down a well'. Everything else seems ok with the engine, no fault codes. Automatic tranny is fine. Any suggestions?
Senior Member
Joined: Jun 2009
Posts: 976
Likes: 0
From: Montgomery, PA
Car: 1990 Camaro RS
Engine: 355 Vortec TPI LT4 Hotcam
Transmission: TH700-R4
Axle/Gears: 3.23
Re: No power below 3000 rpm
when this happens to mine all i can think about it time for a different rear end 
lol sometimes mine is ***** powerful at like 2500, and sometimes it takes like 3500 to even get it to move
lol sometimes mine is ***** powerful at like 2500, and sometimes it takes like 3500 to even get it to move 
Supreme Member
Joined: Oct 2001
Posts: 8,113
Likes: 6
From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: No power below 3000 rpm
you got an air flow problem with either the intake or exhaust.
When I made a sidepipe, just the simple 90* turn out for the tip ruined my flow, had to knock a hole in the bend to get it to rev out well again.
When I made a sidepipe, just the simple 90* turn out for the tip ruined my flow, had to knock a hole in the bend to get it to rev out well again.
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