Join Date: May 2007
stive403 is offline
'94 s-10 pickup 4.3 vortec questions... not running right
Ok guys, this is my first post and my first day searching around this site. Seems like there is a lot of good info here.
I was wondering if anyone can help me out. I have recently purchased a 1994 s-10 pickup 4x4 with the 4.3. It has ran great for the first 200 miles (143,000 on the clock), but last night on my way home from a 30 minute drive or so, as I pulled off the highway and came to a stop the truck almost died, then would rev to 1,200 or so, then drop to 600 or so and continue this everytime it was trying to idle. it would drive pretty much like usual once I got going though. Got into the driveway and it was doing the same thing.
If I would give it a little bit of gas it would almost die out and then it would jump up in rpm's. Also, as I pulled into the driveway coasting it seemed as though I may have lost power brakes as I almost hit my roommates car...
I'm thinking it could be a vac leak in the brake booster, but not sure.
I came home from work today and started it up to see how she ran, and it would fluctuate between 1,100 and 800 rpm's and didn't sound right.
Like I said, I'm new to this truck, and bought it as a motorcycle hauler for racing (I have one next weekend) and would really like to get it back into shape.
I have heard of the fuel pressure regulator, cat. converter, injector, etc... issues, but am looking for a little expert advice. Anyone?
Thanks in advance!