1998 GMC Jimmy engine light

Tiny
ANGELO DELLECAVE
  • MEMBER
  • 1998 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 124,000 MILES
Very cold this morning. Warmed up car for 20 minutes. Got in & it was idling rough & engine light on. Started driving & engine settled but engine light started flashing. At stop light the flashing stopped but it started idling rough again. I had a problem similar to that before & it turned out to be o2 sensors so I changed them out & it ran fine. My concern is that the light is flashing which it didn't do that before. I checked oil to look for a cracked head & it seemed fine although there was a little odor. Also fuel odor while driving. I guess my question is could the o2 sensors have gone bad again because of the cold?
Monday, February 11th, 2008 AT 6:55 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You need to pull the OBD2 code/s from the PCM to determine exactly what's wrong and comeback with the code/s for us to help you.
Was this
answer
helpful?
Yes
No
Wednesday, February 13th, 2008 AT 5:32 AM

Please login or register to post a reply.

Related Check Engine Light Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
Check Engine Light
GUIDE
Check Engine Light
Why is my check engine or service engine soon turned on? In this guide we talk about what this is associated with this notorious light, what it is used for and what you...
VIEW MORE