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Engine will not start and run?

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Okay.

More than likely the IAC is your issue. This is responsible for controlling the RPM during idle. If it will not stay running then more than likely this is dirty and not allowing air through or faulty and just remaining closed. Either way, I would just go ahead and replace it.

https://www.2carpros.com/articles/how-to-replace-an-idle-speed-control-motor-iac

Please let me know the results. Thanks
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Tuesday, December 29th, 2020 AT 11:34 AM (Merged)
Tiny
RUNNER9
  • MEMBER
  • 3 POSTS
  • 2005 FORD EXPLORER
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 190,000 MILES
Starts and runs fine when cold, if I shut it off and try to restart it after a short period of time if goes to about 1300 rpm them comes down to idle sputters and stalls. I have replaced the fuel pressure sensor, fuel filter, fuel pump, plugs, wires, coil pack removed and cleaned the throttle body. While I had the intake hose off I had a helper turn the switch on and the throttle body went closed then returned to the resting position, had them push the pedal to the floor and it opened all the way. Tried to start it with the hose off to see and when it was sputtering if they pushed the pedal nothing happened.
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
What trouble codes were found? Here is a guide to help with scanning a computer.

https://www.youtube.com/watch?v=b2IJGfImVvw

One other thought. Under the hood in the relay box is an EEC relay (electronic engine control). Switch it with a different relay with the same part number and let me know if it helps.
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
RUNNER9
  • MEMBER
  • 3 POSTS
There are no codes and I have already changed the relay. Tried to check the fuel pressure but there is no port. I do notice when I am sitting idling and press the gas the speedometer goes up with the tachometer. Was thinking maybe the ECM?
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Very possible or even a ground issue or short to power. The problem is finding it. I wouldn't arbitrarily replace the ecm. It was the EEC relay and not the fuel pump relay that you replaced, correct?
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
RUNNER9
  • MEMBER
  • 3 POSTS
I switched both still the same
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Do you have access to a live data scanner? I would like to know what the coolant temp sensor is telling the computer. Also, pull the vacuum hose off the fuel pressure regulator to see if there is any fuel being drawn in and make sure there is vacuum to it.
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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By the way. here is a how to for checking fuel pump pressure. Look at step 5. You will need to get an adapter.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
RMETRO16
  • MEMBER
  • 2 POSTS
  • 2005 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
Having an issue with my explorer. About 2 months he ago my truck would not start had the battery replaced because it would not hold a charge. Truck was doing fine after that. Then it started idling rough when starting it and sometimes while at a red light. Then after working all day and it sitting in the parking lot at work it won't start, it seems to be turning over and trying to start but it won't. Any possibilities?
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Is the check engine light staying on? Have you checked for spark and fuel?
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
RMETRO16
  • MEMBER
  • 2 POSTS
My check engine light has been on for quite some time due to breaking a part while changing my spark plugs. Approximately 2 years which was when I changed the spark plugs.I had never had it reset. It has about a half of a tank of fuel in it.
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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No, I mean is there fuel getting to the engine? Is there spark getting to the plugs?

As far as the light, there could be new codes stored that could identify where the problem is coming from. You should consider having it scanned again.
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Tuesday, December 29th, 2020 AT 11:35 AM (Merged)
Tiny
MDASH55
  • MEMBER
  • 1 POST
  • 2005 FORD EXPLORER
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 110,000 MILES
My Ford 2005 ford exlorer stopped running cranks but wont start, I brought a new battery. Long story short. Took to dealer he says I need a new Motor 3750.00 Is this the case or can it be something else.
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Tuesday, December 29th, 2020 AT 11:36 AM (Merged)
Tiny
BOATBUDDY
  • MEMBER
  • 29 POSTS
Its hard to say without doing some testing, if you are ganna get a new motor, try and get one from a salvage yard, might save you some extra money
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Tuesday, December 29th, 2020 AT 11:36 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Unless the engine was abused, run low on oil, overheated, or never serviced, I find it hard to believe it needs replaced at 110K. What is the problem they are telling you that requires it to be replaced?
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Tuesday, December 29th, 2020 AT 11:36 AM (Merged)
Tiny
JEF699
  • MEMBER
  • 2 POSTS
  • 2005 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 89,127 MILES
I was driving and the low oil pressure light came on and the vehicle shut itself off. Items that I have changed are: oil & filter, oil pressure switch, coil pack, fuel pump. All it does is turn over and still wont start, it hasn't started since it died.
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Tuesday, December 29th, 2020 AT 11:36 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Are you getting spark and fuel to the engine? When the oil pressure was low, did you hear any knocking or ticking from the engine?

Let me know.

Joe
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Tuesday, December 29th, 2020 AT 11:36 AM (Merged)
Tiny
JEF699
  • MEMBER
  • 2 POSTS
It didn't make any engine noise and was running fine, I have changed the oil every 3K. I'm not getting any fuel or spark but I was told by a ford technician that when the low oil pressure warning comes on, it shuts the fuel and spark off so the engine doesn't blow up. Now I can't get the light to turn off. I have checked the compression in each cylinder and it was fine. All relays and fuses are fine too. It must have something to do with the computer system, but what?
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Tuesday, December 29th, 2020 AT 11:36 AM (Merged)

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