Monkeyman6

111,000 miles and it has been running great until today. Went to the store and came back everything is fine. An hour later I pull out of the driveway and it's bucking and shaking. I went to Advance Auto and had it scanned.
Multipule cylinder missfire on #4 and #5
I bought a set of plugs and a coil.
I checked the new coil with an ohm meter and each coil as I changed the plugs. Everyone was so close to the new coil's readings I kept putting the old coils back in. Then I pulled #5, it checked perfect just like the others. HOWEVER it had a smell like a bad light fixture ballest. That's the one I replaced and after a trip back to Advance to have the codes cleared it runs better than ever.
2 1/2 hours and $150 and what could have been a nighmare is fixed. Ready for the weekend!

hypervish

Glad to hear you got the problem fixed! Now you enjoy your weekend!

salimshah

RX needs new plugs at 110k miles. Go ahead replace them all [use OEMs] and replace any failed coil-pack. Ohms reading is only one set of test.

Your problem is solved. For readers, I would suggest swap the suspect to the even cylinders (near the radiator) for ease of replacement.

Salim