Electrical

Tiny
CINDER4062
  • MEMBER
  • 2004 CHEVROLET TRAILBLAZER
  • 4.2L
  • V6
  • 4WD
  • AUTOMATIC
  • 115,000 MILES
The first symptom was the engine rpms kept going up and down instead of an even idle. The second was that the battery died and was not being charged. The third is that none of the gauges in the dash are working and the battery light is on. This is still happening even though the alternator has be replaced and the battery was charged at an auto shop. We've checked the fuses and none appear to be bad and now don't have a clue as to what to check next or replace if necessary. Thank you in advance for you assistance and timely response.
Sunday, March 13th, 2016 AT 9:27 AM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
First check battery for condition including load test, most places do will do it for free, this can effect charging. Then check fusible link in picture and grounds, finally have a pro scanner hooked up to see if there is a class 2 data signal problem. Also replace belt and tensioner if over 60,000 miles.
Was this
answer
helpful?
Yes
No
Sunday, March 13th, 2016 AT 10:11 AM
Tiny
CINDER4062
  • MEMBER
  • 36 POSTS
Please resend picture of the fusible link and grounds
Was this
answer
helpful?
Yes
No
Monday, March 14th, 2016 AT 6:19 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Sorry, here it is.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Monday, March 14th, 2016 AT 7:28 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Also try cleanng throttle plate on both sides and iac hole with choke cleaner. Some of these the throttle body is bad as well, but try this first
Was this
answer
helpful?
Yes
No
+1
Monday, March 14th, 2016 AT 7:29 AM

Please login or register to post a reply.

Related Engine Idle Erratic Content

Vacuum Leak Test and Repair
VIDEO
Vacuum Leak Test and Repair
Instructional repair video
Idle High
GUIDE
Idle High
Intermittent sensor failure or shorting can cause the computer to act strange with unusual side effects, these problems are particularly tough to diagnose. The computer...
VIEW MORE