1994 GMC Suburban whats wrong

1994 GMC SUBURBAN
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GERALD BLAIR
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Engine Performance problem
1994 GMC Suburban V8 Four Wheel Drive Automatic

i got the truck and it had problems.codes32,35.replacediac,cap,rotor,plugs,iac,map,egr valve/selonoid.when started idle is very high,runs then stalls.runs as long as thottle is held a little.have no erratic vacume readings 20/22.will idel down ocassionly but die when put into drive.no codes
Feb 27, 2010 at 11:32 AM
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HMAC300
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  • ASE Certified Mechanic
if i remember correctly this is a TBI engine. If it is check the gasket below the TBI unit as they blew out alot. spray choke cleaner arond the base and if the idle changes that 's probably your problem. Also check for hoses being off or soft as they will get cracks and leak.
Apr 4, 2010 at 10:26 AM
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