Mechanics

I HAVE A CHEVY G30 5.7 IT STARTS AND DRIVE BUT WHEN I COME TO A STOP THE IDLE JUMPS TO 2000 RPM AN WHEN I PRESS THE GAS TO GO THE SHUTS

1993 Chevrolet Van • 190,127 miles

I have a 1993 chevy g30 5.7 it starts and drive but when I come to a stop the idle jumps to 2000 rpm an when I press the gas to go the van shuts off will start back up if I floor it and it start and does the samething when I stop again
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Hardtime10
September 14, 2012.



Check for vacuum leaks. Check the throttle body for carbon build up.

Check fuel pressure. Start there

Roy

ASEMaster6371
Sep 14, 2012.
Changed fuel pump and fuel lines and vacuum lines, cap, rotor, wires plugs, coil, sprayed carb cleaner around vacuum line no change and inside tbi

Tiny
Hardtime10
Sep 14, 2012.
It may have a bad idle air control valve in the throttle body.

Roy

ASEMaster6371
Sep 14, 2012.
Question for you can that go bad the idle air control valve and the engine light don't come on

Tiny
Hardtime10
Sep 14, 2012.
On the old obd1 systems, yes

Roy

ASEMaster6371
Sep 14, 2012.
Cool going to go get one and change it

Tiny
Hardtime10
Sep 14, 2012.