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Engine not starting

Tiny
DANEROOPLAL
  • MEMBER
  • 2007 FORD RANGER
  • 2.5L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
I currently have a 2007 Ford Ranger Hi Rider with the 2.5L WE Common Rail Diesel Engine. The vehicle was functioning but the fuel pump was removed for servicing, and one of the injector washers was also leaking. The pump was serviced and re-installed, the leaking injector was also rectified. The engine now tumbles but does not start. No fault codes are showing up when connected to a scanner. We swapped out the fuel pump, crank and cam sensors, injectors and rail from a running ford and same problem occurs. Even when my parts are installed in the other ford, the van starts like normal. When a noid light is connected to the injectors, it does not pulse which means that the injectors are not pulsing. As I said, no fault codes present. Any advice?
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Monday, March 17th, 2014 AT 10:42 AM

29 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
I am wondering if the inertia switch was tripped when the repair was done, did you check it?

Also can you test for power at the fuel pump when cranking, are the fuses okay?

When you changed the fuel pump how was the wiring connector? I have seen where these get melted and fail.

Please get back to us, we want to help you fix this problem.
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Tuesday, March 2nd, 2021 AT 11:21 AM
Tiny
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I am not familiar with the inertia switch. What is this, what does it do, and where is it located? It seems like the pump is wired correctly because we are not getting any fault codes. The pump was installed just as it was found. The main problem is that the injectors are not pulsing to send the fuel to the engine.
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Tuesday, March 2nd, 2021 AT 11:21 AM
Tiny
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No melted wires were found. All fuses were also checked.
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Tuesday, March 2nd, 2021 AT 11:21 AM
Tiny
KEN L
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Also, did you disconnect the battery before you did the repair? I'm wondering if the security feature is somehow activated, are you using the same key? They have a chip in them and the truck will not start without it.
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Tuesday, March 2nd, 2021 AT 11:21 AM
Tiny
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I am using the same key. Would this 2007 pick up carry one of these inertia switch as well?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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If it is a security problem, how could I fix this?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
KEN L
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I'm not 100% sure a diesel truck has the switch but it should, did you check to see if it was there?

Security would be an issue if while you are cranking the security light is flashing.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Well the key light indicator is cutting off as usual so I guess there is nothing wrong with the security system. I have no idea where to go from here. Even if I have to remove my ECU from the vehicle and place it in another to check that it is functional, it would not be compatible in any other vehicle. The immobilizer would have faults and the vehicle would not start. Please recommend something.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Could you send me a photo of what the switch should look like so I would know it when I see it. I am not in thegarage until this evening so I would check it then.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
KEN L
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Sure,

The next step would be to do a test on the CKS crank angle sensor to see if its working.

Please let me know, there hasn't been a problem I could not get tot he bottom of.

, Ken
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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We have already tested both crank and cam sensors and both confirmed to be functional.
I really appreciate your patience with helping me solve this problem. I have been behind it a month now and still haven't made any progress. It is a very strange problem because the pick up was functioning well before.I just removed the fuel pump, re-installed, adjusted the timing, and that was it. Now the engine just tumbles and no start.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
KEN L
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You adjusted the injector timing?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Meaning the engine timing belt. Once the pump is replaced the timing should be checked.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Good day Ken,
Just to confirm that you know this is a diesel engine.
I did some further checks with the help of an Auto Electrician. When the ignition is turned on, the solenoid on the fuel pump activates and we can hear the pump humming. Yet we are not getting a sufficient fuel pressure output at the rail. What should this pressure value be if we measure it? Could this low pressure also cause the injectors to not pulse?
Note: We have also changed the fuel pump a number of times with new replacements and the same problem occurs. We also installed my fuel pump in another vehicle and it works fine.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
KEN L
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The pump pressure should be 30 to 50 pounds to the injector which then pumps it higher before going into the engine. Seems like the problem is at the pump, is there line that is kinked? Maybe do some testing at the tank to see if you can locate the low pressure problem. The injectors are getting pulse correct?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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No kinks on the fuel line from the tank. No inertia switch found. And no the injectors are not pulsing.
The confusing thing is that the vehicle was functioning well before except that the fuel pump was rattling slightly and one of the injector washers was leaking slightly. The pump was removed, serviced and reinstalled. The leaking injector was rectified. This is all that was done and now the vehicle just tumbles and not start. I hoping it is nothing to do with the ECU because this was not tampered with. Plus it would be expensive to have this repaired. I am so confused right now. Don't know what to check next. How could I tell if it's the ECU?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
KEN L
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Are all system grounds connected by the tank?

You have power at the tank but the pump will not pump, but when you remove the pump and install it into a different truck it works. Did we try checking the connector at the pump? It could be shorted.

The next step after this is a pin to pin check of the wiring harness using a wiring diagram and a voltmeter. This will test all circuits and sensor inputs. If all checks well the computer would be the next step.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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All connectors are good.
How could I check whether the computer is faulty or not? I don't want to purchase one until I am certain that it has gone bad.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
KEN L
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Please let me know how the pin to pin test goes.

Sorry for the delay, Day job gets in the way :-)
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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P0627 error code now showing on the scanner.
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Tuesday, March 2nd, 2021 AT 11:22 AM

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