Chevy s10 1994 spitting &sputtering replaced alot of stuff

Asked by Paul Mar 23, 2023 at 09:23 AM about the 1994 Chevrolet S-10 LS RWD

Question type: Maintenance & Repair

V6 4.3 ,was having to have fast idle
for it to take fuel spitting and
sputtering aca acsional back fire.
Replaced throttle body kit and
injectors plugs wires map senser
pickup module rotor fixing to replace
fuel filter . But now something
happen while driving ,noticed I did"nt
have fast idle anymore started dieing
everytime I stopped .so I went out
and was going to put idle back to fast
but notice it was idling perfect still
tried to put fast but want idle up only
down drive good taking fuel now but
want idle at all already spent bunch
on it and the device engine light is off
and been off this whole time this
going on so no code reader can
someone help

2 Answers
40,015

beatupchevy answered about a year ago

Try a compression test , Or take it to a mechanic , or junk it and get something that runs

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157,625

James answered about a year ago

A 1994 model is OBD I so you need a scan tool that can communicate with the older systems. Is the service engine soon light on? If so there's a code in the computer. A fast idle and popping back through the throttle body indicates a lean air to fuel mixture. Most likely a vacuum leak. To confirm this check the spark plugs. If the electrodes are white, you have a lean air to fuel mixture. Hope that helps! Jim

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