won't start
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won't start
Good evening everyone, I have a 1999 Ford F350 V10 the truck will not start it will crank but will not start I replaced the camshaft sensor and the crankshaft sensor. Does anybody have any other ideas on what it could be? It used to just crank and try to start crank and try to start and then it would fire and it would run just fine but now all it will do is just crank.
Thanks Edward
Thanks Edward
Fleet Mechanic
Joined: Feb 2011
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From: Thousand Oaks, CA
Check for a clogged IAC
Check the fuel pressure, there should be a test port on the fuel rail.
If pressure is good, test the COP and fuel injector coils for 12v when the ignition switch is in Run.
If fuel pressure is low if could be a clogged fuel filter, bad relay or bad pump.
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Good afternoon everyone I appreciate all the input and help, I bought me a manual for my truck finally.
R&T I did get it to fire with starting fluid but it will not run so that tells me I'm not getting gas so what should I look for since I'm not getting gas the first things I think of is fuel pump and gas filter I don't have time today but I will check to see if I can get fuel to flow on the engine side of the filter i I know you said check the pressure on one of the Rails that looks like I need a special tool. may you all have a wonderful and blessed weekend
R&T I did get it to fire with starting fluid but it will not run so that tells me I'm not getting gas so what should I look for since I'm not getting gas the first things I think of is fuel pump and gas filter I don't have time today but I will check to see if I can get fuel to flow on the engine side of the filter i I know you said check the pressure on one of the Rails that looks like I need a special tool. may you all have a wonderful and blessed weekend
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From: Fort Smith, Arkansas
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still won't start on its own
Okay I hooked up the pressure gauge I got it to bleed a little bit of gas that's about it, because of how tight of an area it is and it was getting dark I went on to other things. I change the fuel filter it was not clogged. I had my wife turn the truck on and I didn't hear a thing from the gas tank it was as quiet as could be, the truck will start with starter fluid I'm guessing fuel pump, as far as the aci or ica that you recommended me to check to see if it is clogged I haven't gotten that far. What say you all? Do you still recommend me to check to see if that one thing is clogged?
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Brett Foote
Fleet Mechanic
Joined: Feb 2011
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From: Thousand Oaks, CA
Did you reset the inertia switch?
Also, check if you are getting 12v to the output side of the inertia switch.
Or the fuel pump relay may be bad.
If you don't see 12v at the inertia switch output I would try a jumper wire from the battery to the inertia switch output lead just to see if everything else is working.
I read on one of these forums where someone changed their fuel pump twice before figuring out the relay was bad.
When the ignition switch is turned to Run the PCM will run the fuel pump for a couple of seconds to prime the fuel rails.
When Start is selected the PCM looks at the crankshaft sensor and restarts the fuel pump after it sees the engine spinning.
Also, check if you are getting 12v to the output side of the inertia switch.
Or the fuel pump relay may be bad.
If you don't see 12v at the inertia switch output I would try a jumper wire from the battery to the inertia switch output lead just to see if everything else is working.
I read on one of these forums where someone changed their fuel pump twice before figuring out the relay was bad.
When the ignition switch is turned to Run the PCM will run the fuel pump for a couple of seconds to prime the fuel rails.
When Start is selected the PCM looks at the crankshaft sensor and restarts the fuel pump after it sees the engine spinning.
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still won't start on its own
Good evening everyone, I replace the relay and still nothing so I'm guessing it's the fuel pump, some of the research I've done on Google and YouTube the symptoms definitely point to the pump, so I'm going to get on eBay and order one. Do any of you have a particular eBay vendor that you might recommend.
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Sep 4, 2012 09:41 PM