Big little problem
06-23-2009, 09:58 PM
#1
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Location: California
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Car: 1982 Trans Am/1989 Iroc Z
Engine: T/A:1974 Corvette 350, Iroc:305 TPI
Transmission: T/A:Borg Warner 5-Speed, Iroc: Auto
Axle/Gears: T/A: Dana .44, Forgot Iroc
Big little problem
My 89 Iroc is still bogging out on me. It only happens at speeds below 1500 rpms. once the engine revs higher than 1500, I can floor it all day long. What's going on here? Also it has the 305 in it.
06-27-2009, 10:29 AM
#2
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Car: 86 T/A, 83 Z/28
Engine: 5.0 TPI, 350 2 X 4 bbl
Transmission: 4 speed auto, 5 speed manual
Axle/Gears: 3.23 posi, 3.73 std
Re: Big little problem
My first guess is a vacuum leak. May be a broken vacuum line but could also be a leak at the intake manifold or throttle body gasket or even if theres a leak betweenthe MAF and the throttle body. Also check the timing.
06-30-2009, 12:03 PM
#3
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Car: 1992 Camaro RS
Engine: 8.0:1 454/Mild Hyd roller/Accel DFI
Transmission: WC T5
Axle/Gears: Stock 1992 open 7.5" 2.73 ratio
Re: Big little problem
Get a scan tool and look for codes first. If that turns nothing up put a vacuum gauge, fuel pressure gauge, and a timing light on it.
Theres two things that will make a motor hesistate; low manifold vaccuum, or slow ignition timing.
Theres two things that will make a motor hesistate; low manifold vaccuum, or slow ignition timing.
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