2002 S10 4.3 Fuel Issue


Asked by Aug 15, 2016 at 02:48 AM about the 2002 Chevrolet S-10 3 Dr LS Extended Cab SB

Question type: Maintenance & Repair

So a few weeks ago I was pulling up to a
stoplight and as I came to slow down I got
to about 5 MPH and the truck just shot off,
thought it was because I was too low on gas
or a bad battery, but nope. Seems like the
truck will only attempt to run when cleaner is
sprayed into the throttle body. Started with
replacing the fuel filter then called my bro
over to have a look at the truck. We
discovered when I took out all the spark
plugs that they were blackened and sooted.
cleaned them off and reinstalled them.
Same thing.. so we rented the million dollar
pressure gauge from autozone. Tested near
the engine Schrader valve and didn't get any
pressure reading at all. So we tested it by
the fuel filter, and we were only able to get
the Guage up to 5 psi (not 60). So we quickly
assumed that the fuel pump was the culprit.
Ordered a new one and installed it but the
truck still don't want to start. Still tried to run
when cleaner was sprayed in the throttle
body. I'm all tapped out from fixing this truck
so really have no more money for it. So
today I pulled the intake to get into the
plenum. No real signs of leaking near the
injectors, they all look normal wear, dirty but
dirty good in a fuel case right? I pulled off
the regulator that piggy backs the injector
and planning to replace it. I really hope it's
the problem coz I don't got the 300 for a new
injector. Seems like gas got all the way up to
the injector and is either flooding the the
system or not applying gas at all. Could it be
the regulator took a shit?

1 Answer


UPDATE : The problem is fixed! It ended up being the Crank Position Sensor. Just replaced this less than 9 months ago but I have to mention I've had a couple fender benders during the time which can also cause this to go bad. If you take the sensor off and it has a gouge on the end of it, replace it immediately. This left me stranded with a tow and 3 weeks trying to figure out wtf happened. Too seldom I see people never follow up on their posts and I don't want this to happen to anyone else.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • s10 v6 cranking, firing and has spark but will not start? what could it be 13 answers

    s10 v6 cranking, firing and has spark, also hear fuel pump at gas tank but will not start what could it be?

    2002 Chevrolet S-10 2 Dr LS Standard Cab LB


    Maintenance & Repair

  • Chevy 2002 S10 extended cab having issues up hill, and starting 1 answer

    My boyfriend has a Chevy 2002 S10 extended cab and while driving especially uphill the truck seems to make a noise comparable to a hard shift of gear... Also more often than not his truck has issues...

    2002 Chevrolet S-10 4 Dr LS 4WD Crew Cab SB


    Maintenance & Repair

  • 1999 4.3 misfiring 35 answers

    I'm running out of ideas on a problem with my 99 S10 4.3 The truck will start and idle fine however as soon as you feed a little gas it starts to miss. Giving it even more gas is either covering up th...

    1999 Chevrolet S-10 2 Dr STD Standard Cab LB


    Maintenance & Repair

  • Security issues 2 answers

    How do I bypass or disengage the fuel shut off security system on my 2002 Chevy s10 4x4 extended cab LS

    2002 Chevrolet S-10 3 Dr LS 4WD Extended Cab SB


    Maintenance & Repair

  • S10 1 answer

    S10 won't start, but the lights will turn on. Tried getting it to start lastnight, still didn't wanna start. How do you get the starter to start after not wanting to start.

    2001 Chevrolet S-10 2 Dr LS Standard Cab LB


    Maintenance & Repair

Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,050
#2 John Saffrahn
John Saffrahn
Reputation 890
#3 Trebor66
Reputation 880
View All

Related Models For Sale

Used Ford Ranger
187 Great Deals out of 6,243 listings starting at $1,595
Used Chevrolet Silverado 1500
2,477 Great Deals out of 145,722 listings starting at $1,800
Used GMC Sonoma
5 Great Deals out of 422 listings starting at $1,995
Used Toyota Tacoma
713 Great Deals out of 32,026 listings starting at $2,995
Used Ford F-150
3,139 Great Deals out of 200,441 listings starting at $1,273
Used Dodge Dakota
131 Great Deals out of 3,874 listings starting at $1,500
Used Chevrolet Blazer
1,216 listings starting at $1,699
Used Nissan Frontier
406 Great Deals out of 21,336 listings starting at $2,200
Used GMC Sierra 1500
1,083 Great Deals out of 56,547 listings starting at $1,600
Used Dodge Ram 1500
485 Great Deals out of 11,746 listings starting at $1,795
Used Chevrolet Camaro
620 Great Deals out of 38,658 listings starting at $2,995
Used Chevrolet Tahoe
998 Great Deals out of 30,888 listings starting at $1,495