97 rodeo random misfire cylinder 5 & 6 misfire po101 & po102

[worshammike]

i have a 97 Isuzu rodeo 3.2 and have had a prob with cel flashing when it flashes the truck misfires and sputters i pop it in nueteral and rev it up missing goes away for a bit at 1st it read misfire cylinder 6 then after a while cylinder replaced plugs with ngk iridium changed mas airflow sensor didn't help had three shops look at it they couldn't figure it out then i changed cam position sensor it turned off the cel for about a week now i've got PO101 & PO102 PO300 i need to smog can somebody please help

Mike W

[amigo-2k]

The coil pack could be dead or dying. follow the spark plug wire from the plug to the coil pack. Also if you have more then 100k on the plug wires i would swap them out. too.

[Cat Fuzz]

Actually, 97 has Coil On Plug. With the MAF codes and the randomness of the misfire, I would suspect a vacuum leak somewhere. Check your air intake hose carefully for any cracks or other leaks. Air leaks after the MAF can wreak havoc and make the computer grumpy. Check all vacuum lines carefully. Breaks can be hard to see. Last would be the suspect the intake manifold gaskets.

You may wish to check your coil boots. If you see any white streaks on the insides or black streaks down the porcelain insulator on the any of the plugs, you have a problem with the plug connections. This indicates high resistance and the spark is going straight to ground instead of going through the spark plug.