Car sputtering after driving for a while...
#1
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Car: 1990 Firebird Formula
Engine: 305 TBI
Transmission: Automatic
Car sputtering after driving for a while...
Recently bought my 1990 Firebird Formula (305 TBI) and it had been sitting for a while but I still drove it home. Well after a lot of headache and trial and error with it stalling at idle and missing and generally running like crap, we got it running pretty good. The one thing it's still doing and makes me worry about driving it more than around town is that I'll drive it to the next town fifteen minutes away, and it'll be fine, and then it'll sit about an hour and I'll drive it home, and right before I get home (again, about 15 minutes) it will start sputtering intermittently and it'll try to stall, and even if I floor it, it just surges around 2,000 rpm like it's not getting any air. Anyone have any ideas as to what's wrong with it?
#3
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Car: 91 Firebird/88 Firebird/91 Formula
Engine: V6 3.1/V8 5.0/V8 5.0
Transmission: 4L60/700R4/4L60
Axle/Gears: 3.23/2.73/2.73
Re: Car sputtering after driving for a while...
Hook up a fitting and check fuel pressure when it's trying to stall. Ohm injectors and check nozzle spray patterns. Change out fuel filter and check timing. Check for vacuum leaks. May have to refurbish TBI with new filters,o-rings, and diaphragm. May be old sediment in gas tank clogging fuel pump. And, welcome to the forum, see this is your first post.
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Car: 1990 RS Camaro
Engine: 400 sbc throttle body
Transmission: world class t5 manual
Axle/Gears: 3.73's, Detroit TrueTrac
Re: Car sputtering after driving for a while...
ECM might have gone bad. My car did the same thing for a while and i couldnt figure it out. one day when it was acting up i turned the ignition all the way forward (without starting it) and i heard a weird clicking noise under the hood and my injectors were firing and the car wasnt even running. new ECM fixed it right up. just a thought.
#5
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Car: 1990 Firebird Formula
Engine: 305 TBI
Transmission: Automatic
Re: Car sputtering after driving for a while...
ECM might have gone bad. My car did the same thing for a while and i couldnt figure it out. one day when it was acting up i turned the ignition all the way forward (without starting it) and i heard a weird clicking noise under the hood and my injectors were firing and the car wasnt even running. new ECM fixed it right up. just a thought.
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