going down the road it sputters

1998 GMC SUBURBAN
230,000 MILES
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BOBBY JOE
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  • 1 POST
My chevy suburban 1500 4x4 and idols good. But when going down the road it spits and sputters. What do you think is wrong with it? It seems like seems to be starving for gas whether if it's idling or going down the road.
Jan 23, 2012 at 2:38 AM
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PROTECH1980
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Do you have a check engine light on? if so diagnose that first. Fuel pressure should also be checked, spark qaulity should be checked, could be bad ignition parts(cap,rotor,wires,plugs,coil) or could be fuel related(pump,filter,injector). Process of elimination is required for diagnoses,
Jan 23, 2012 at 3:00 AM