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88 f150 wont start

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Old 12-22-2008, 07:45 PM   #1
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Default 88 f150 wont start

I've got a 88 F-150 with a 302 in it for a yard truck that isn't starting.. I've replaced the battery, alternator, coil, plugs, wires, cap, rotor, ignition module, and fuel pump relay and still wont start. I have spark, starter cranking the motor but noting else.

I need help/advice since I'm losing my patience with this truck since it ran Saturday afternoon and haven't been able to get it started since
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Old 12-22-2008, 08:12 PM   #2
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do you have fuel? Spark + fuel + compression = fire...

I just had a fuel pump go out on my explorer while on a 1000 mile trip... I have fuel delivery systems on my mind

Good luck
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Old 12-22-2008, 08:19 PM   #3
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Welcome to the forum. Give us a little more history about this truck. Was it running when parked or towed back to the yard? Does it have fuel pressure at the rail?
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Old 12-22-2008, 08:21 PM   #4
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Welcome to the site!

+1 on the fuel. If you have spark and fuel - you ought to be getting something - farting, backfiring, etc.

Just out of curiousity - what prompted you to change the fuel pump relay? An unusual choice for the first round of troubleshooting.

Make sure you hear the two-second fuel pump charge when you roll the key to On. If not, may want to verify that the inertia switch has not activated before diving into fuel pump replacement or the like.

Not knowing what part of the country you're from - is there any possibility of fuel line icing?
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Old 12-22-2008, 08:22 PM   #5
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Yeah, do you hear the F150 "fuel pump whine" when the key is turned to on?
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Old 12-23-2008, 02:55 AM   #6
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sounds like a fuel pump whine, 4 bottles of Dry-gas in the system since I'm in Maine, the Inertia Switch has not been activated.

The truck ran fine Saturday afternoon. Plowed the drive then parked it for the night. Sunday morning I went to start it up to move it and nothing but click, I took the battery and alternator out so they could be tested which the alternator was bad and the battery just needed quick charge from me trying to start the truck.

The reason why I changed the Fuel Pump Relay is I had someone listening for the whine and didn't hear anything. it is supposed to warm up in the next couple days to 36 degrees since it's been down in the Teens and below.


wife did the spur of the moment/good deal buy on this truck since it has a 7 1/2 foot Fisher plow on it back in the late Spring which we haven't had any problems up until now. I've used this truck weekly during the Summer and have used it Thursday 12/18 and Saturday 12/20 to plow but when I really needed it on 12/21 and 12/22 for the 18 inches of snow it don't want to start
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Old 12-23-2008, 03:10 AM   #7
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I would start by pouring some gas in the throttle body and see if it will start.
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Old 12-25-2008, 05:04 PM   #8
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dont hear the pump running when I turn the key on, thought I did before... poured gas into the throttle body, nothing.

pissing me off, the truck ran fine Saturday 12/20 when I parked it
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Old 12-25-2008, 06:44 PM   #9
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I would check for fuel pressure at the fuel rail. Maybe you have some sort of blockage in the lines somewhere. I have found that when you get an older truck unless you knew all of the previous owners, there could be any form of redneck repairs done to it. This is especially true with plow trucks. Before you keep throwing parts at it I would do the fuel pressure test. If pressure is good at the rail then I would check the injectors. For the heck of it I would also check for vacuum leaks.
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Old 12-25-2008, 07:02 PM   #10
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Check the computer for codes, this thread will explain how:
http://www.f150forum.com/f10/how-retrieve-trouble-codes-obdi-10907/
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