Acceleration is crappy and RPM needle jumping?
Thread Starter
Junior Member
Joined: Jul 2011
Posts: 1
Likes: 0
Acceleration is crappy and RPM needle jumping?
I have a 1989 Firebird formula 350 when it first starts up it seems fine but after a few miles it lacks power and if I floor it the RPM needle skipps and jumps and somtimes the passing gear wont kick in. Also when I slowly accelerate it gets shakey and boggy. Please whats wrong and is it one thing or many?
Supreme Member
iTrader: (2)
Joined: Jan 2002
Posts: 9,962
Likes: 5
From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Re: Acceleration is crappy and RPM needle jumping?
Sounds like an ignition issue. Maybe a bad coil or a failing ignition module. The tach jumping is from the ignition intermittently cutting out under acceleration.
Joined: Oct 2001
Posts: 12,228
Likes: 1,156
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Acceleration is crappy and RPM needle jumping?
Your plug wires are bad. sounds like some are burned thru and shorting to ground.
Thread
Thread Starter
Forum
Replies
Last Post
