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2007 Ford Ranger Request for support

Tiny
DANEROOPLAL
  • MEMBER
  • 2007 FORD RANGER
  • 2.5L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
Good Day,

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. It seems as though the injectors are not getting a signal to open. What could be the possible causes of this? Thank you in advance for your support.

Regards,
Dane Rooplal

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Wednesday, March 12th, 2014 AT 1:48 PM

20 Replies

Tiny
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Did you take the truck from the shop or did you do the work yourself? It sounds like the fuel pump isn't timed or isn't getting power. Are you talking about an electric or mechanical pump?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Well I'm doing it myself with the help of a friend who is an auto electrician. The pump is electric with a solenoid. We even replaced the pump with a new one to check if the pump was actually the problem. How could I know if the pump is getting sufficient power?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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The timing was also set back correctly when we replaced the pump.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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The pump needs to be getting battery voltage. It should hum when the key is turned to the on position. If you don have power to the plug at the pump, follow the wires back and check each item you find as you go.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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The pump is humming once the ignition is turned on. On average, what should the fuel pressure be at for the injectors to open? Thats the main problem. The injectors are not opening.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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The fuel pressure doesn't open the injectors, they are controlled by a module and open electronically. The computer pulses ground to open and close them. The computer uses crank and or cam sensors to know that the engine is turning. It could be a communication issue, or a module going bad. You can start by checking wires for breaks or damage and plugs for burns or backed out wires
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Well we changed both cam and crank sensors and the same problem occurs. We also disconnected the sensors one at a time and ensured that we got the fault code on the scanner to ensure that the circuit is working. We did get the fault codes when each sensor was plugged out. We are not sure if the fuel pump is supplying sufficient pressure because while attempting to start, we disconnected the line to the injectors and the fuel just runs out slowly and not gushing out as it should. But we also replaced the pump and the same problem? Could there be some kind of blockage causing the sufficient fuel not getting to the injectors. Possible the fuel filter.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Plus if a module was wrong or there was communication issues. Won't a fault code come up for that?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Im with you on the blockage if you've found low flow. I only said the other solutions because you said the injectors weren't opening. Always change the fuel filter when you change the fuel pump. Id do that next. Or at least check for flow before the filter and compare it to the flow at the engine
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Still no luck.I even changed the injector rail. What could I check next.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Before you spend anymore money on this truck, you need to have the fuel pressure tested against specifications. That way we can be sure that it's not or is a fuel problem
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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How do I do this?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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There should be a fitting on the fuel rail somewhere to hook a fuel pressure gauge too. You can usually rent or borrow one from a good part store near you
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Ok I should be able to get one. You have any idea what the fuel pressure should be like?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Should be 50-60 psi when the key is turned on
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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Well the fuel pressure is good! Seems as thought the injectors are not pulsing/opening. Would the immobilizer/ecu have anything to do with this? The key like indicator light on the instrument panel. Remember we already changed the fuel pump, injector rail, injectors, crank and cam sensors. None of these seem to be the problem because the engine still tumbles but doesn't start.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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That key like indicator on the dash means that it's not recognizing the transponder in the key. You may need a new key or that key that you have made need to be programmed to the car again. You can program it with a properly working key if you have one or you'll have to take it to a good service shop( if not ford ) so they can do it with a scan tool. You may even need a new key
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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But it's the same key I have been using all the time. How could that go bad suddenly? But the key light isn't remaining on or showing as an error. It is functioning as it should.
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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It is a Diesel engine. We confirmed that the injectors are not pulsing. We connected a noid light to it to test the injectors and nothing. I guess the next step from here would be ecu?
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Tuesday, March 2nd, 2021 AT 11:22 AM
Tiny
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If the key light isn't staying on then you're correct it is functioning as it should. I'm sorry this is been so difficult. We as mechanics face these quite often and it's even more difficult when I'm this far away and I can't put my hands on the vehicle. If the ECM is receiving it's inputs from the crank and cam sensors then it should be supplying pulse grounds to the injectors. If you've verified or changed the crank and cam sensors then you may be right the ECM may be bad. A diagnostic computer with datastream would be able to tell you if it was receiving the proper inputs to create a pulse ground for the injectors
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Tuesday, March 2nd, 2021 AT 11:22 AM

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