1995 v6 3.4L miss fire problem
#1
1995 v6 3.4L miss fire problem
My 1995 v6 3.4 L camaro is missing from cylinder to cyclinder. It might miss fire on cylinder 1 one time and then the next time you drive it might miss fire on 4. Then sometimes you might drive it and it doesnt miss fire at all. You can cut the ignition switch off while you are driving and crank it again and it will stop for a while. We have changed all 3 coil packs, new module, new wires, new plugs, and swtiched out the computer. Any help would be great.
Last edited by bigpunisher; 08-30-2009 at 01:07 PM.
#9
But if fuel filter is clogged would explain random miss fire or fuel pump beginning to fail cheapest to most expensive replace fuel filter its like 20 bucks see if you get any improvement then check fuel pressure and see if your getting sudden drops in pressure if it starts getting worse it might be pump if your getting drastic drops in rpm during missfire it might be throttle position sensor shorting out no obd2 in your car correct? Some 95s do
#10
You are describing random misfire. This is usually due to a lean fuel mixture. Do as Toneman07 suggested. Check the fuel pressure and pressure regulator when the engine is under heavy load and requiring the most fuel.