Will not stay running

Tiny
NATHEN98
  • MEMBER
  • 1997 DODGE DAKOTA
  • 3.7L
  • V6
  • 4WD
  • 220,000 MILES
I have the vehicle listed above. It starts right up, but it only runs for a few seconds then shuts off. I have no horn. When this started my horn relay started clicking when all this started. Any suggestions?
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Wednesday, September 11th, 2019 AT 8:16 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome to 2CarPros.

I don't suspect the horn is the cause of the no start. Chances are the horn itself is bad if you hear the relay.

Next, have you checked the fuel pump relay? Does it always start right back up after it stalls?

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

I attached a picture of the relay location.

Let me know.

Joe
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Wednesday, September 11th, 2019 AT 5:45 PM
Tiny
NATHEN98
  • MEMBER
Yes it starts back every time. I have replaced the fuel pump map sensor, IAC sensor, and checked all relays the only way it will idle is if I pour fuel down the intake.
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Friday, September 13th, 2019 AT 8:56 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

I need you to check if the fuel injection pulse is lost. I question if you have a bad cam sensor. The sensor is in the distributor. I attached a pic. I'm wondering if you are losing signal to the injectors.

Here is a link that explains how to check the injectors for a pulse,. You will need to use a light to see if the light stops flashing when the engine stalls.

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Since you can keep it running with pouring gas in the intake, then there is no fuel getting to the engine. Also, if you haven't, check the fuel pressure. I know you replaced the pump, but something is preventing from getting to the engine. We need to determine what it is. This isn't an ignition related issue.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Let me know what you find.

Joe
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Saturday, September 14th, 2019 AT 5:18 PM

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