SPONSORED LINKS

Trailblazer 4.2 cyl 1 misfire Help pls

Tiny
LOKE
  • MEMBER
  • 2004 CHEVROLET TRAILBLAZER
  • 198,000 MILES
I have a 2004 chevy trailblazer with 4.2 6 cyl I have changed plugs and coil packs run inj cleaner changed map sensor and still running rough I cleaned throttle body cleaned pcv hose I also checked to be sure coils was aligned and down tight still idles at 500 and turn ac on goes between 3&400 pls help lol not sure wat to do from here
SPONSORED LINKS
Monday, July 30th, 2012 AT 5:50 AM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
First you need to solve #1 misfire check compression and fuel injector at #1 the. If problem is neither of those post all stored. Codes here. Iac ( idle air control). Coyld be ng.
Was this
answer
helpful?
Yes
No
Monday, July 30th, 2012 AT 10:55 AM
Tiny
LOKE
  • MEMBER
  • 2 POSTS
Comp good and checked injector wiped all codes out and drove a few miles till ck eng light was flashing only code was p301 misfire on cyl 1 no other codes and still running rough
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
-1
Saturday, August 4th, 2012 AT 1:34 AM

Please login or register to post a reply.

Related Engine Misfire Content

Intermittent Misfire
VIDEO
Intermittent Misfire
Instructional repair video
Misfire Random Code P0300
GUIDE
Misfire Random Code P0300
The world of automotive diagnostics can be complex, with numerous codes and potential issues to keep track of. One of the more common engine diagnostic codes is P0300, which...
VIEW MORE

Sponsored links