1993 Chevy S-10 Low voltage to injectors

Tiny
CHRIS1975
  • MEMBER
  • 1993 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 119,000 MILES
My 1993 S-10 4.3l V6 has been acting up the past few weeks by dieing when coming to a stop, It has gotten worse to even sitting in the driveway while warming up.

Sometimes it will not restart for a few minutes like its vapor locking, Other times will restart first try.

I did replace the fuel pump, Fuel Filter and fuel pump relay today, After doing this I still had the same problems.

I had my Brother come over so I could try and catch it from the engine side to see if it was spraying fuel during its mood, While it does this the injectors aren't spraying any fuel.

I then took a complete throttle body that a friend had from a same year 4.3 and installed it with the same results, I then while restarting and shutting off caught it not spraying fuel and checked the voltage dropping down to 5 and 7 volts while cranking it over.

I've checked grounds and wiring harness under the hood with no luck of finding anything wrong.


Any ideas or help would be great.


Thanks Chris B
Friday, February 6th, 2009 AT 8:23 PM

4 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
ECM drives injector so lack of voltage would be a fault of ECM
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Saturday, February 7th, 2009 AT 12:46 PM
Tiny
EDDIE S-10
  • MEMBER
  • 11 POSTS
This sounds pritty much like what mine is doing or how it started run a lil while and shut off my injecters stop spraying to it just dies dont try to stay running or anything mine started doin this when it got cold out so I was kinda thinking its the weather but its just really frustrating dealing with this let me know if u figure anything out with this at all and ill do the same for u u tested the same stuff as me but I dont have a amp meter so I cant test anything like that
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Saturday, February 7th, 2009 AT 1:44 PM
Tiny
CHRIS1975
  • MEMBER
  • 2 POSTS
I found another ECU local and will pick it up on Monday and hope for the best :lol:

Thanks for the help thus far :D
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Saturday, February 7th, 2009 AT 6:12 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Let me know Eddie needs help
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Monday, February 9th, 2009 AT 4:24 PM

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