1989 GMC C1500 No power

Tiny
FAZ123
  • MEMBER
  • 1989 GMC C1500
  • 6 CYL
  • 4WD
  • MANUAL
  • 172,000 MILES
My GMC seems to not be getting enough fuel. On my drive home from work, it simply had no power. I would top out at 10mph driving up a steep incline. If I would leave off the gas at a stop light, then it would stall. I was thinking clogged fuel filter, but I'm far from an expert. Please help? If it is the fuel filter in your opinioin, do you have any tips for changing it?
Friday, May 16th, 2008 AT 5:52 PM

3 Replies

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
A fuel filter is a start. Spray with wd40 before attempting to remove the fuel lines to the filter.
Was this
answer
helpful?
Yes
No
Friday, May 16th, 2008 AT 6:04 PM
Tiny
FAZ123
  • MEMBER
  • 2 POSTS
If that doesn't work?
Was this
answer
helpful?
Yes
No
Friday, May 16th, 2008 AT 8:49 PM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
You need to install a fuel pressure gauge and check pressure. It should be betwenn 9 and 13 psi. Also try removing the o2 sensor(you could have a clogged cat converter) this will relieve the back pressure so if it runs ok with it out then you know the cat is cloggeed
Was this
answer
helpful?
Yes
No
Saturday, May 17th, 2008 AT 6:24 AM

Please login or register to post a reply.

Related Engine Stall At Idle Content

Engine Stalls After Dead or New Battery
GUIDE
Engine Stalls After Dead or New Battery
So you installed a new battery and now the engine stalls? You have done nothing wrong because believe it or not this is normal. The engine computer has a learning cycle...
VIEW MORE