HELP with random misfire code P0300
#1
HELP with random misfire code P0300
So right before I got my new transmission installed the vehicle was throwing a random misfire code. I cleared it out and then my new transmission was installed. I drove maybe a month to and from work. all was fine. then one day parked and running in the parking lot at work , it threw a random misfires code. i cleared it. and drove another week just fine. then again parked with the vehicle running at work and it threw a random misfires code. this time it started to run rough and it was a blinking check engine. i cleared it . and it was fine. weeks later..another random misfire code.cleared it and installed a new fuel pump this past weekend. fast forward to today on my lunch break.. random misfire code popped up again.. I cleared it... minutes later the code popped up again. I cleared it and I drove home from work fine.
Any idea what could be going on? This is only happening at idle.
Any idea what could be going on? This is only happening at idle.
#2
Spark plugs?
C.O.P bad?
Rubber hose under resonator dry rotted, missing?
tb, maf dirty?
Cam actuator missing screens?
Air filter saturated or dirty?
Battery connectors hinky?
Catalytic converter plugged?
Tighten intake manifold bolts?
Just some random ideas.....
Chris
C.O.P bad?
Rubber hose under resonator dry rotted, missing?
tb, maf dirty?
Cam actuator missing screens?
Air filter saturated or dirty?
Battery connectors hinky?
Catalytic converter plugged?
Tighten intake manifold bolts?
Just some random ideas.....
Chris
Last edited by Happy Hummer; 04-05-2017 at 11:13 PM.
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