4.3 eng bigin to shake put new plugs wires dis cap points still shaking at idling and moving

4.3 eng bigin to shake put new plugs wires dis cap points still shaking at idling and moving 1 Answer

Have missfire mainly at idle scanner said misfire cylinder 4. I put plugs,plugwires , button and cap , map senser , coil , miss ant near as bad but still miss mainly at idle but on rd it flys 21 Answers

Miss at idle runs wide open good on rd maybe small miss

I have a 1999 Chevy Blazer, 4x4, 4.3 vortec. We have changed the coil pack, fuel filter, distributor cap and button, the crank shaft sensor, cam sensor and plug wires as well as the ignition control module. We coming to a stop sign it will stall and sometimes when just sitting still. Sometimes it will start right back up and other times it takes several tries. I also have the oxygen sensor on order and it should be here tomorrow. Fuel pressure tested perfectly. No black smoke, no smell of rotten eggs or the cat glowing red. The only code that comes up is PO420. 4 Answers

I have a 1999 Chevy Blazer, 4x4, 4.3 vortec. We have changed the coil pack, fuel filter, distributor cap and button, the crank shaft sensor, cam sensor and plug wires as well as the ignition control m...

I need help with my 1990 k5 blazer 5.7 350 it's will start up run ruff and have to pump the gas when idling then about 4 mins later it starts to idle higher and higher then dies 1 Answer

I need help with my 1990 k5 blazer 5.7 350 it's will start up run ruff and have to pump the gas when idling then about 4 mins later it starts to idle higher and higher then dies so I try and start ...

1997 blazer 4.3 sounds like cylinder missing 9 Answers

my 4.3 vortec sounds like its not firing on all 6. Engine shakes but still runs up n down the road. I replaced all plugs, wires and dist. cap. I don't have a scanner or any diagnostic tools. What is t...