Car stumbles at high RPMs
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Supreme Member
Joined: Mar 2001
Posts: 6,577
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From: Portland, OR www.cascadecrew.org
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
Car stumbles at high RPMs
Ok here is the deal, my car was running strong (relative term here (305TBI) 
) until yesterday, when i went WOT at about 3500rpm the car stumbled a couple of times, and then fell flat on its face. it seems fairly responsive until the revs go about 3500. if you guys could give me some ideas of things to check. the car has a new fuel filter, and the plugs looked good (2 weeks ago).
i am going to go pull a couple of plugs this afternoon. and check the plug wires. anything else i should look for?
ohh yeah 90RS 305TBI.
) until yesterday, when i went WOT at about 3500rpm the car stumbled a couple of times, and then fell flat on its face. it seems fairly responsive until the revs go about 3500. if you guys could give me some ideas of things to check. the car has a new fuel filter, and the plugs looked good (2 weeks ago).i am going to go pull a couple of plugs this afternoon. and check the plug wires. anything else i should look for?
ohh yeah 90RS 305TBI.
Supreme Member
Joined: Nov 1999
Posts: 1,507
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From: Elizabeth, Colorado
Car: '94 Corvette
Engine: LT1
Transmission: 4L60E
Almost sounds like a fuel pump. Throw that on the check list.
Did you mess with the timing? See what kind of timing reading your getting at 3500.
Ron
Did you mess with the timing? See what kind of timing reading your getting at 3500.
Ron
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Joined: Sep 2002
Posts: 634
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From: Fort Meade MD
Car: 84 Z28
Engine: 355
Transmission: 700R4 with corvette servo
You said you changed the fuel filter right. Are you sure you got the flow direction right. Should have an arrow of which way the fuel should flow through it.
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