Blazer engine miss
#1
Blazer engine miss
1996 Blazer has had an engine miss lately while going down the road. The miss starts at about 2000 rpm and goes away when I accelerate but as soon as I go to cruising speed it starts missing again.
I replaced plugs and wires, cap and rotor and it still misfired. Next thing I tried is unplugging the mass air flow sensor and the misfire went away! So I bought a new MAF sensor and installed it and the engine miss is back.
Only code I've received is P0300 one time. Anyone have any thoughts?
I replaced plugs and wires, cap and rotor and it still misfired. Next thing I tried is unplugging the mass air flow sensor and the misfire went away! So I bought a new MAF sensor and installed it and the engine miss is back.
Only code I've received is P0300 one time. Anyone have any thoughts?
#2
One of the plugs is misfiring, could be a loose plug(happened to me) arcing wire, cheap cap. Check under hood at night in the dark, (unhook underhood light) look for arc sparks on 1 of the wires or around plug. Look hard can be tough to spot sometimes
#3
If one of the plugs are misfiring why does it run fine with the mass air flow sensor disconnected?
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