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Randomly engine stalls while driving?

Tiny
FRANK78$$$
  • MEMBER
  • 3 POSTS
It's a 1995 so its obd1. And supposedly he cleaned the mass air flow. I wish it was obd2, might make all this easier, ya know? I changed the MAF seems to be good.
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Monday, April 26th, 2021 AT 1:21 PM (Merged)
Tiny
XWYATT
  • MEMBER
  • 8 POSTS
  • 1995 FORD F-150
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 145,000 MILES
Wont idle for more then 20 minutes sometimes shuts off while im driving it desnt get any spark from the coil I have changed the coil, distubtor, distubtor cap, plug wires, ingion module, ecm, ecm relay
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Monday, April 26th, 2021 AT 1:22 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check the spout connection near the ignition control module it may not be making a good connection. It goes through that to the supply power to themodule from the pcm.
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Monday, April 26th, 2021 AT 1:22 PM (Merged)
Tiny
XWYATT
  • MEMBER
  • 8 POSTS
Ive checked that its good is there anything else it could be I have checked replaced everything but the ingion. Could there a sensor anywhere that would cause it
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Monday, April 26th, 2021 AT 1:22 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If you replaced the distributor with anew one then I can rule that out. But if not it could be the reluctor inside the distributor that's where the pointed things are to break the gap. Otherwise whe it does this you'll hve to trace it backwards to findo out where it's cutting thepower off. Also if you have a vacuum line going to the map sensor, that may be soft and sucking together causing it to do that. Also check the ground near the top of the radiator and make sure it is clean and making good contact, that may be causing it as well.
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Monday, April 26th, 2021 AT 1:22 PM (Merged)
Tiny
XWYATT
  • MEMBER
  • 8 POSTS
Ok ill try that thanks
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Monday, April 26th, 2021 AT 1:22 PM (Merged)
Tiny
KD6J5Z
  • MEMBER
  • 7 POSTS
  • 1995 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
While driving the truck cuts out and stalls then restarts after sitting for about 3 minutes
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Monday, April 26th, 2021 AT 1:23 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
I would suggest switching the relay with a different relay in the vehicle with the same part number to see if that affects the problem. Also, you may want to consider checking fuel pump pressure. Since it isn't kicking a trouble code (check engine light) the problem may be fuel related. Here is a how to video and directions for checking it.

https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm

Let me know what you find.

Joe
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Monday, April 26th, 2021 AT 1:23 PM (Merged)
Tiny
KD6J5Z
  • MEMBER
  • 7 POSTS
The relays checked out ok, the fuel pressure read 30 psi, and the repair manual stated it should be between 35 and 45 psi. The pressure did rise when the vacuum line was disconnected from the fuel pressure regulator and the engine was acelerated. Would the fuel filter being clogged cause the psi to be lower that the repair manual statesl.
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Monday, April 26th, 2021 AT 1:23 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Yes, it can cause lower pressure. If you get an adapter, you can disconnect the filter and check the pressure before the filter. That would give you an acurate reading of the pressure and tell you if the filter is causing problems. Keep in mind, if the manual states 35PSI as a minimum, anything less is going to cause problems. Also, did you notice if there was any gas in the vacuum hose going to the regulator?

Let me know what you find.

Joe
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Monday, April 26th, 2021 AT 1:23 PM (Merged)
Tiny
KD6J5Z
  • MEMBER
  • 7 POSTS
There is not any gas on the fuel regulator.
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Monday, April 26th, 2021 AT 1:23 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
That is good. I was thinking maybe it was bad. As far as the pressure test, either you have a partially plugged fuel filter or a pump going bad.

Let me know what you find or if you have other questions.

Joe
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Monday, April 26th, 2021 AT 1:23 PM (Merged)
Tiny
KD6J5Z
  • MEMBER
  • 7 POSTS
I replaced the fuel filter and the psi increased to 35.
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Monday, April 26th, 2021 AT 1:23 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
That is good. Has it corrected the problem?
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Monday, April 26th, 2021 AT 1:23 PM (Merged)
Tiny
KD6J5Z
  • MEMBER
  • 7 POSTS
No it still stalls, I replaced the fuel pump I think that did it, has not stalled since.
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Monday, April 26th, 2021 AT 1:23 PM (Merged)
Tiny
GUINTY
  • MEMBER
  • 3 POSTS
  • 1995 FORD F-150
  • 6 CYL
  • 2WD
  • MANUAL
  • 210,000 MILES
Engine stalls while driving. Occurs intermittently. Has dual tanks, occurs on both. Tried an idle control valve, didn't work. Is it the fuel pumps, PGM? Electronic ignition?
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Monday, April 26th, 2021 AT 5:15 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
I question a couple things. First, what you described sounds like a crank sensor. On the other hand, there have been problems where the switch to change tanks has taken fuel from one tank and run it into the other. I believe there is a service bulletin on that problem. You would need to contact a Ford dealer. Has the check engine light ever come on?
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Monday, April 26th, 2021 AT 5:15 PM (Merged)
Tiny
GUINTY
  • MEMBER
  • 3 POSTS
No, check engine light not on. The fuel transfer switch seems to transfer between tanks ok, unless there is more to it than what I think. I dont want to have to take it to the dealer if I dont have to. They charge too much here. Was hoping it is something simple.
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Monday, April 26th, 2021 AT 5:15 PM (Merged)
Tiny
GUINTY
  • MEMBER
  • 3 POSTS
Is a "crank sensor" an easy find component, easy to check and easy to replace myself?
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Monday, April 26th, 2021 AT 5:15 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
The crank sensor is located on the front of the engine near the harmonic balancer. You should be able to do it yourself.
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Monday, April 26th, 2021 AT 5:15 PM (Merged)

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