1994 Chevrolet S-10 stalling on acceleration.

Tiny
DRUMMER DAVE
  • MEMBER
  • 1994 CHEVROLET S-10
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 191,000 MILES
Truck runs great sometimes, then runs very bad. When running bad, in park, and stepping on gas, sounds like tbi is fluttering. When I take off, truck will not gain speed, sounds like it is falling on its face.I have changed 02, canister solenoid, IPS, Timing chain, EGR, injectors, also dipped and rebuilt TBI, to include replacing accelerator pump in TBI.I have also set timing, replaced alternator, starter, water pump, fuel filter, two of the three relays on fire wall. Air filter, MAP, TPS, cap, rotor, wires, and plugs. Still runs bad, then good. Have found that sometimes I can feather the gas, or push it down slow, and it will take off. When I step into it, sounds like trans is slipping, and motor is stalling.I have spent all my money, and still no resolve. Help me please!
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Saturday, December 14th, 2013 AT 8:35 PM

5 Replies

Tiny
FREEMBA
  • EXPERT
Rent or buy a fuel pressure gauge.
Check to be sure that you have the proper fuel pressure.
The fuel pressure on your truck should be: With the key on and the engine not running pressure should be 58 - 64 psi (The fuel pump only runs for about 2 seconds when the key is turned to the On position, unless the engine is started).
It will drop about 5 psi or so when the engine is running.
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Saturday, December 14th, 2013 AT 9:44 PM
Tiny
DRUMMER DAVE
  • MEMBER
Thank You so much!I was heading to the pump next, and now that you have mentioned it as well, I will be laying in the cold. Thank You again!Have a great holiday.
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Sunday, December 15th, 2013 AT 8:14 AM
Tiny
FREEMBA
  • EXPERT
Drummer Dave,

I only intended for you to check the fuel pressure to either condemn or rule out the fuel pump. I wasn't predicting that the pump was bad, I just know that it is one likely possibility. However, please let me know how it goes, especially if you need more assistance.
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Sunday, December 15th, 2013 AT 4:44 PM
Tiny
DRUMMER DAVE
  • MEMBER
Did the pump, and screen today. Old screen was dirty, tank is new. The person that had the truck before me, changed the tank, and used the old pump, and screen, Bad idea, it was out, they should have changed it. The problem is solved, and only cost me fifty bucks. Thanks again, Truck runs like new.
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Sunday, December 15th, 2013 AT 5:10 PM
Tiny
FREEMBA
  • EXPERT
I'm glad that you got it fixed and for only fifty bucks. What a bargain!
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Thursday, December 19th, 2013 AT 7:44 AM

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