2002 Chevy Blazer MISSFIRING

11,400 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
KLMTHAPOET68
  • MEMBER
  • 1 POST
Hi, Kirk from St. Louis. I am sick of my fiance's 2002, chevy blazer extreme, 4.3 v6. It hasd 114,000 miless on it and the timing chain was just replaced. I also had the fuel pump replaced because after the timing chain was replaced the truck kept cutting off. The check engine light started flashing but the car was running fine. Soon after it starting abrubtly shutting off. I had it hook up to a diagnostic computer and got three trouble codes. 1. The crank chaft position sensor, the camshaft senser, and lastly it said that the fuel injectors were misfiring. Two of the injectors read like an auctioneer spitting out numbers, and the other four injectors all read different numbers. So, I replaced all the fuel injectors, had the check engine light and codes reset. The car ran fine for about 10 miles, we drove the car with the computer hooked up to it. The check engine light started flashing again, this time the computer read that the pistons were misfiring all except one and the car dies.
Feb 18, 2009 at 1:03 PM
Avatar
DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
problems started after Timmimg chain correct? if yes have the crankshaft sensor checked for damage or debris on sensor magnectic pickup. Located on timimg cover bottom behind crank pully.
Feb 19, 2009 at 1:17 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle