SPONSORED LINKS

1989 Chevy Blazer Fuel Gauge

Tiny
JAMES8730
  • MEMBER
  • 1989 CHEVROLET BLAZER
  • V8
  • 4WD
  • AUTOMATIC
  • 179,000 MILES
Just recently replaced my fuel pump, after installing, my fuel gauge is not correct, shows correct reading, then will go down to around 1/4 tank and eventually go back to being right again. Prior to fuel pump installation gauge worked perfect. Any ideas?
SPONSORED LINKS
Friday, June 25th, 2010 AT 11:07 PM

6 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Sounds like may have a loose ground connection at fuel sending unit
Was this
answer
helpful?
Yes
No
-1
Friday, June 25th, 2010 AT 11:14 PM
Tiny
JAMES8730
  • MEMBER
  • 4 POSTS
Im grounded to the frame, should I try scruffing my grounding point up a bit for a better connection?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, June 25th, 2010 AT 11:16 PM
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
If its got some rust or dirt on it then yeah scrape it til its shiny
Was this
answer
helpful?
Yes
No
Friday, June 25th, 2010 AT 11:20 PM
Tiny
JAMES8730
  • MEMBER
  • 4 POSTS
Will try tomorrow, thanks!
Was this
answer
helpful?
Yes
No
Friday, June 25th, 2010 AT 11:21 PM
Tiny
JAMES8730
  • MEMBER
  • 4 POSTS
Alright so after checking the ground from the sending unit im still getting the same reading. Could this be a possible gauge issue?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, June 26th, 2010 AT 2:04 PM
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Possible but not likely since it was working fine before pump replacement, could be bad unit though if fuel pump failed the unit probably wasn't far behind unless you replace the entire unit and pump?
Was this
answer
helpful?
Yes
No
Sunday, June 27th, 2010 AT 12:20 AM

Please login or register to post a reply.

Related Instrument Cluster Gauge Fuel Level Content

VIEW MORE

Sponsored links