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ok 1993 pontiac bonneville, car started shaking and inside it smells like gas or exaust, i took it to the dealership they said based off the codes it gave 53,54,55,42,66 it needed new egr valve. maybe a cat converter, so i took it to a local muffler shop , they said its not the cat cause it was...

i have had some codes come up does anyone have a list of the trouble codes for a 1993 pontiac bonneville 3.8 thanks

whenever i keep my foot steady on the gas , maintaining a steady speed, i hear and feel the blazer pull and then go back to normal every 10 seconds or so, and a slight step up in the rpm's, almost as if im pushing down on the gas then letting go. anyone know what could cause this, iv had work...

ok i have a 1987 chevy s10 blazer, 2.8 ltr engine, just had a major tune up , new plugs and wires, cap rotor, ect. today i was driving and when i get around 30 mph and give it more gas it starts spuddering and wont go any faster, you can tell it wants to but it wont. here and there iv noticed a...