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Ford Truck Club Forum > FORD F-250 | F-350 SERIES | SUPER DUTY > 1992-1997 Ford F250 | F350



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  #1  
Old January 17th, 2018, 04:35 PM
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Default F250 Eng Stalling

I'm a new member looking for help with my F250 XLT 7.5L 4X4, 207000mi. This truck is a secondary auto or work truck. Sits outside and is used more in summer than winter.

Issue is engine stall, when engine comes up to temperature at idle the engine RPM starts to oscillate from 900-1100 rpm. It does this for a for a few minutes then stalls. The engine will restart, run normal (900rpm) then starts the process all over again.

Things that have replaced within the last two years are;

Plugs, Dist Cap, plug wires, Fuel Pressure Regulator, Engine Coolant Temp sensor(recommended by a friend), Fuel Filter, and ran Seafoam thru both tanks twice (thinking I had water in the tanks).

I have lost all confidence in using this truck, so any help guidance will be appreciated.
  #2  
Old January 17th, 2018, 09:24 PM
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Next things to look at are the IAC (idle air controller) and the MAP sensor.

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
  #3  
Old January 18th, 2018, 04:14 PM
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Thanks glc,

I was thinking of doing the same with these two items. I think I'm going to invest into an OBD-1 scan tester to see what codes the engine is giving me. This truck is 24 years old so I'm not sure if I shouldn't replace these parts. Its just weird that something is failing or breaking down after the engine comes up to temperature.
Thanks
  #4  
Old January 18th, 2018, 10:40 PM
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Ignition modules can get flaky when heated up too. You have the module itself and the PIP inside the distributor.

You changed the cap and wires, what about the rotor?

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
  #5  
Old January 19th, 2018, 03:38 PM
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Yes, I did change the rotor at the same time as the plugs, wires, and cap.
I'm somewhat ignorant on what type of distributor/function that I have.
  #6  
Old January 20th, 2018, 12:02 AM
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If you are familiar with the old school distributors with points, the PIP is the pickup coil, takes the place of points. The module is what runs it all. Depending on year and engine, the module mounts either on the side of the distributor or somewhere else.

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
  #7  
Old January 20th, 2018, 03:47 PM
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Thank you for the description. I'm old school when it comes to the distributor. I did buy a Haynes Repair manual. Read up on all of the components, I will do a resistance/voltage check on all using the manual and see what's failing. I will let you know what I find and the fix. As for location of the module from what I can tell it's mounted somewhere in the engine compartment not on the dist.
Thanks glc for the help............
  #8  
Old April 18th, 2018, 02:43 PM
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Smile OIl Level guage Fluctation

Its been awhile, the new map sensor solved the problem with engine stalling.

Now I have a question does anyone have any experience with "oil level gauge"" fluctuating?
When at idle or driving the needle on the dash gage bounces up and down a little. I have not seen this before. The sensor for this gauge is located behind the intake manifold, almost unreachable.

Any help is appreciated.


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Adrien , Bulldog74 , glc , harrison28 , JSoko , noneurosis

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