Hey fellow z’ers,

alright so im having some issues with misfiring, jerky acceleration and a really rough start, along with loss of power.

Originally the car stalled out on my while idling for a about 10 mins after being fully warmed up and running normally. I was unable to restart it at the time, came back after it cooled down and got it fired up after 15 or so cranks, limped it home with its new symptoms, power was abnormal and throttle response delays or unresponsive at times. Jerky. No CEL!

i have since replaced the maf sensor and spark plugs, cleaned out the throttle body. The car is running better then before, but the underlying issue is most certainly there.

Today after letting it idle for a while again it finally spat the cel and I recorded the cpu data at the time, I was hoping on some verification on fuel supply that I was monitoring. This snapshot is the readout at the time of a p300 random misfire alarm.


I had my suspicion about the fuel, but I’m not entirely sure what the normal numbers should be. I was monitoring live data and at idle it seems to fluctauate from about 15% to 20% but at times completely drops to 0% on both rails and the motor seems to weaken.

i have a pcv valve arriving tomorrow as I did find some oil in my air filter.

just looking for some advice to point me in the right direction, Should I change the fuel pump? The coil packs I inspected when I did the plugs and they seem fine, no oil or anything, contact looks good, and they were replaced about 4 years ago so I’m not sure its those.

thanks in advance!