4.2 CYL 1 MISFIRE HELP PLS

2004 Chevrolet Trailblazer

Tiny

loke

July, 30, 2012 AT 5:50 AM

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

FOUND 335 RELATED QUESTIONS

2 Answers

Tiny

merlin2021

July, 30, 2012 AT 10:55 AM

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.

Tiny

loke

August, 4, 2012 AT 1:34 AM

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

Please login or register to post a reply.

Code Read Retrieval/Clear Honda Civic
How to gather codes Ford Explorer
Code Read Retrieval/Clear - Dodge Stratus
Code Read Retrieval/Clear Chevrolet Camaro
Code Read Retrieval/Clear Mercedes Benz