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Starts but shuts off

Tiny
STEVEGRIFFIN
  • MEMBER
  • 1985 TOYOTA PICKUP
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
Starts but stalls and any electrical demand will shut if off.
Tuesday, November 6th, 2018 AT 1:02 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi and thanks for using 2CarPros.com

It sounds like there could be a simple resolve to this. Most often, a weak battery connection will act this way. Take a look through this link and let me know if it helps.

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

As I said, let me know if this helps or if you have other questions.

Take care,
Joe
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Wednesday, November 7th, 2018 AT 7:47 PM
Tiny
STEVEGRIFFIN
  • MEMBER
  • 4 POSTS
Well, every thing is new, battery, cables, cleaned all grounds still the same. While checking power at fuel pump, I noticed the 12 volts went away after start, where the heck is the fuel pump relay on this heap? The truck is a 1986 cab and chassis. Thanks a lot Joe it is nice of you to help. Google YouTube show newer trucks but zip on 1986.
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Wednesday, November 7th, 2018 AT 8:54 PM
Tiny
STEVEGRIFFIN
  • MEMBER
  • 4 POSTS
Hey Joe, I introduced 12 volts to the fuel pump, key in run position and away the turd went. It is kind of looking like I need an ignition switch. Would you agree? Thanks for the push.
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Thursday, November 8th, 2018 AT 2:19 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome back. Check all fuses and the relay. I have attached pictures of the relay and fuse locations. Chances are it is not the switch.

Here is a link that discusses how to test a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let me know.

Joe

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Thursday, November 8th, 2018 AT 7:29 PM
Tiny
STEVEGRIFFIN
  • MEMBER
  • 4 POSTS
Hi Joe, yes you are right. There is power everywhere. Turns out a circuit opening relay and the ground wire are the problem, they should have named it gremlin switch to cut fuel. Thanks Joe
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Friday, November 9th, 2018 AT 5:16 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Happy to help. I am glad you found the problem.

Let me know if you need any other help.

Take care,
Joe
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Friday, November 9th, 2018 AT 8:06 PM

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