99 RX300 missfire
Thread Starter
Driver School Candidate
Joined: Nov 2011
Posts: 4
Likes: 0
From: Fl
99 RX300 missfire
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!
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!
CL Community Team
Joined: Apr 2001
Posts: 16,533
Likes: 1,379
From: Austin, TX
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
Your problem is solved. For readers, I would suggest swap the suspect to the even cylinders (near the radiator) for ease of replacement.
Salim
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