1997 - 2003 F-150

engine cuts out

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Old Jul 19, 2010 | 07:40 PM
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engine cuts out

Started up my truck to go to work today. Got about 10mins down the road and then my engine just cut out. Pushed it into a parking lot got a ride and came back to it later and the truck started right up. Made it a ways and then the engine cut back out again. Thoughts?

My serpentine belt broke last week. Turned out to be a seized compressor that caused it to break. Ran the truck all weekend without any issues until today. Related?

1997 F150 4.6L 4x4
 
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Old Jul 20, 2010 | 01:52 AM
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From: Joplin MO
Change your fuel filter.
 
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Old Jul 20, 2010 | 07:32 PM
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Thoughts!
Broken belt, seized compressor!.
Guess what's right close by the compressor location?
The crank position sensor.
Check that the plug is seated solid and not damaged.
Without this, the motor will not run under any conditons.
Good luck.
 
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Old Jul 25, 2010 | 02:16 PM
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Where is the fuel filter on a 1998 f150 4.2?
My truck is running rough and it is eiterh that or electrical short feels like a short to the fuel pump or something but it will idle fine just when you press the gas it sputters and dies then starts back up
Feels like its running out of gas but it also feels electrical
 
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Old Jul 25, 2010 | 03:42 PM
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From: Joplin MO
Clipped to the driver's side frame rail.

You sure have a lot of posts scattered all over the place on your issue. You only need one thread.
 
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Old Jul 26, 2010 | 12:52 PM
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Well I was kinda mad at the time and trying to get it fixed ASAP for a race coming up and i didnt get any answers for a hour or so.

Sorry about that GLC know what you mean
I have 11,000 post on Thumpertalk.com
 
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Old Jul 26, 2010 | 08:27 PM
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Fuel Pump?
 
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Old Aug 2, 2010 | 10:47 AM
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Update: I ran a obd II scan on the my truck and I got a P1299 code. I looked it up online and believe its a "Cylinder head overtemperature protection active" Any more thoughts?
 
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Old Aug 2, 2010 | 12:22 PM
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From: Joplin MO
It's either overheating or you have a flaky CHT sensor. Possible wiring issue.
 
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Old Aug 2, 2010 | 11:34 PM
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played around with it some tonight. Checked the fuel pump relays and fuses. All of those checked out fine. Tried putting some starter fluid past the air filter. Engine caught for a couple of seconds. So its not getting gas.

Now the question is clogged fuel filter or is my fuel pump bad? I'll start with the fuel filter unless anyone has some tips on how to tell if your fuel pump is shot. Any other possibilities I could be over looking?
 
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Old Aug 3, 2010 | 12:56 AM
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From: Joplin MO
Fuel pressure gauge on the rail. Autozone should have them in their loan a tool kit.
 
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Old Aug 6, 2010 | 02:21 PM
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So i disconnected the fuel line past the fuel tank turned the key to run and fuel pumped out. So the fuel pump is okay. Reconnected the line disconnected after the fuel filter and fuel pumped out. so its not a clogged filter. Disconnected the return line...no fuel pumped out. Going to try and replace the fuel pressure regulator tonight.
 
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Old Aug 6, 2010 | 02:23 PM
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From: Joplin MO
TEST the pressure first with a gauge. Don't just throw parts at it.
 
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Old Aug 6, 2010 | 05:23 PM
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I have found out that fuel pumps go out intermitantly. They may run fine, then cut out. Wait an hour, the truck runs fine, as if there is nothing wrong.
 
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Old Aug 7, 2010 | 01:45 PM
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It's all fine to do this but you are not getting to the specific issue.
You may not see fuel out the return line on such a short pump run time.
When going to the run position on the ignition switch, the run time is only a second or so.
The 2 pipe closed system uses this short time to fill the fuel rails so the crank to fire is a very short inteval.
If you are experiencing an abrupt shut off of the motor, it is usually not fuel because there is still pressure in the rails that will bleed down and you should feel it as a slowing of the motor before it stops.
An abrupt shut down is electrical in nature such as ignition or a loss of DC power such that something stops working instantly or causes the igniton to shut off.
Cam position sensor: without it the fuel stops instantly because it controls injection sequence timing thus the injectors stop working elecrically..
Which you see when the problem happens dictates the direction you should look.
Have you double checked the crank sensor plug/ leads for being seated or damaged? An issue here will cause the problem of shutdown 'instantly'. No fuel, no igniton, no nothing at crank or run time..
.
Another way to catch the issue is using a mid range scanner to trap the fault while driving so you can see what the programs sees, then work from that point, on the hardware that may be causing the issue.
 

Last edited by Bluegrass; Aug 7, 2010 at 01:55 PM.
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