Mis fire

Tiny
MDHAYNES
  • MEMBER
  • 2001 TOYOTA HIGHLANDER
  • 175,000 MILES
I have a 2001 highlander that coded miss fire's on 2, 4, and 6 with a coil code as bad. I changed all the coils and plugs and still getting multipul miss fire and cylinder 2 mis fire. What else could the problem be?
SPONSORED LINKS
Do you
have the same problem?
Yes
No
Wednesday, May 15th, 2013 AT 6:07 AM

7 Replies

Tiny
WRENCHTECH
  • EXPERT
Codes don't tell you what to change or what is bad. They merely record a specific situation that the technician has to diagnose.

What are the exact code numbers being set now and what are the symptoms?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, May 15th, 2013 AT 7:02 AM
Tiny
MDHAYNES
  • MEMBER
It codes back with p0300,302 midfire, 304 misfire, 306 mismire, 1300,1305,1310,1315,1320,1325, and 1354. Thanks
Was this
answer
helpful?
Yes
No
-1
Thursday, May 16th, 2013 AT 7:05 AM
Tiny
WRENCHTECH
  • EXPERT
Are those codes current? Did you clear everything after the last repair?
Was this
answer
helpful?
Yes
No
Thursday, May 16th, 2013 AT 7:34 AM
Tiny
MDHAYNES
  • MEMBER
Yes several times
Was this
answer
helpful?
Yes
No
Thursday, May 16th, 2013 AT 9:05 AM
Tiny
WRENCHTECH
  • EXPERT
You must have a wiring or PCM problem. I'd start looking for a bad connector somewhere in the harness that feeds those coils. You're also setting a VVT code.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, May 16th, 2013 AT 9:32 AM
Tiny
MDHAYNES
  • MEMBER
Decided to get a diagnostic check to see if it might be the VVT. All wiring and connections look good. Thanks for your help
Was this
answer
helpful?
Yes
No
Thursday, May 16th, 2013 AT 10:55 AM
Tiny
WRENCHTECH
  • EXPERT
Somebody is going to need a lab scope to track down where that is happening.
Was this
answer
helpful?
Yes
No
Thursday, May 16th, 2013 AT 11:12 AM

Please login or register to post a reply.

Related Engine Misfire Content

Intermittent Misfire
VIDEO
Intermittent Misfire
Instructional repair video
Misfire
GUIDE
Misfire
An engine tune up is necessary at manufacturers recommended intervals to maintain proper engine run-ability. A misfiring engine will cause, low gas mileage, low power output...
VIEW MORE

Sponsored links