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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

1993 f150 5.0 bucking and stalling

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Old May 2, 2023 | 11:16 AM
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1993 f150 5.0 bucking and stalling

1993 5.0 , auto trans, dual tanks. f150 bucks and stalls out , I have been scratching my head on this for so long. Truck starts up, idles great , but after driving for a few minutes check engine light comes on and will stutter, if you let off , or throttle all the way it will stop, it will go about three miles before it bucks and shakes , then will stall out and die. Won't restart and cranks over kinda slow. If you let it sit it will start right back up.
I know not the throw parts at it , but ive replaced the tps , coolant temp sensor , icm, fuel filter and coil and distributor.
sorry for the long post boys but i just cant figure this out.
 
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Old May 2, 2023 | 11:40 AM
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What were the Key On Engine Off (KOEO) test results and Stored Code display?

Did you check the basics, i.e. spark and fuel before the problem pops up and when it is happening?
 
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Old May 2, 2023 | 12:02 PM
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These problems are usually pretty simple to solve with a multimeter and a paperclip. First thing to do is to pull the trouble codes.
YOu can use this procedure. https://www.ford-trucks.com/forums/1...aper-clip.html
Let us know what you find and we can steer you in the right direction.
 
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Old May 3, 2023 | 06:00 PM
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Ran the koeo codes and the koer codes ,
koeo codes are : 23, 31,85. Memory codes are 22,41,63,31,33
Koer codes are 21, 23,41,31,13,77.
​​​​​​
 
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Old May 3, 2023 | 06:32 PM
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Is it getting hot? That will cause what you have described.

This looks like a decent page for the trouble codes if you don't have one already. Aerostar Van/Wagon – Bronco – Econoline/Club Wagon – Explorer – F-Series – Ranger (1992 – 1997) – TroubleCodes.net
 
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Old May 3, 2023 | 07:07 PM
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Originally Posted by Smalldevil
Ran the koeo codes and the koer codes ,
koeo codes are : 23, 31,85. Memory codes are 22,41,63,31,33
Koer codes are 21, 23,41,31,13,77.
​​​​​​
Thats not correct. You should have 3 digit codes. Maybe its 233 and 185. 224, 163, 313(X)
Try retrieving codes again, but this time expect a 3 digit code.
 
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