1993 Chevy S-10

1993 CHEVROLET S-10
Avatar
RODNEY J.C.
  • MEMBER
  • 1 POST
Engine Performance problem
1993 Chevy S-10 6 cyl Two Wheel Drive Automatic

4.3 vortex Idles rich, and rough. plug wires, plugs, cap and rotor has been changed. Has good takeoff. Have to start it like its flooded. Low vacuum, no leaks found external.
Still gets 17.5MPG on hwy.
Oct 22, 2008 at 1:43 AM
Advertisement
Avatar
WMPBROWN
  • MEMBER
  • 17 POSTS
Excess Fuel:
Replace your fuel relay switch, on the firewall under the hood.

Poor vacuum pressure:
Replace MAP (Manifold Absolute Pressure) sensor. On a bracket to the left of the TBI.
Check for missing, cracked or loose vacuum lines on the TBI

"Manuel/Flood" start:
Check the TPS (Throttle Position Sensor), on the left side of the TBI. After you remove the air cleaner, look for a metal tang. Carefully, with a thin flathead screwdriver, try to move the tang towards the firewall, if it takes a lot pressure, the TPS needs replaced.
Nov 26, 2008 at 4:42 PM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle