SOURCE: truck starts but will not idle
IT COULD POSSIBLY BE THE INTAKE GASKETS. FORD HAS A PROBLEM WITH THE GASKETS GOING BAD. IF THE CHECK ENGINE LIGHT IS ON AND GIVING YOU CODES PO171 AND PO174 I WOULD CHECK THE GASKETS BY SPRAYING CARB. CLEANER AROUND THE INTAKE WHILE THE ENGINE IS RUNNING. IF THE IDLE SPEEDS UP THEN THAT IS YOUR PROBLEM.
SOURCE: 2002 f250 v10 engine quits after warm up at idle only
DTC = P0720
footnote b = MIL (malfunction indicator light) comes on after 2nd occurance
footnote c = tranny control indicator light (TCIL) flashes
circuit = OSS = output shaft speed sensor in the tranny (not the variable speed sensor (VSS) in the diff).
condition = OSS sensor circuit malfunction
probable causes = Short/open circuit, sensor, PCM
My guess? Replacing the OSS will take care of it. I hope you don't have a faulty PCM.
SOURCE: schematic of front end parts for 99 f250 4x4 v10
4x4 will not ingage in f-250 v-10 checked all fuses under dash not sure what relay it is
SOURCE: Ford f250 super duty V10 cruise control doesn't work.
WOULD CHECK BRAKE SWITCH FIRST AS THESE HAVE A HIGH FAILURE RATE.
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