Question about 1997 Ford F250 SuperCab

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How to reset pcm ford

Running rough after tune up.

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There is no resetting a PCM

You mean clear codes & all data,a code reader,
or remove the battery cable on yours,I wouldn't
be removing cables on most vehicle, unless you know
the issues that could happen.

Tune-Ups has been gone for 25 years,all you got was spark plugs

Who did the work & what was done?
How did it run before the work?

Posted on Mar 26, 2014


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Ford pcm problems

if you can supply the code then i can determine the source of the problem , just looking at the PCM will not tell you anything worthwhile 99.9% of the time , could be the map sensor but will need the code to be sure

Jun 12, 2014 | 2004 Ford Freestar

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Why does my 1986 ford thunderbird start but will not stay running

Could be in need of tune up, spark plugs & wires, coil packs, fuel filter,&/or ECM/PCM (computer) going bad.

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Flashing engine light on ford freestar,engine is running very rough at higher rpm

A flashing engine light usually indicates a misfire or several misfires. If the ignition components (coils, wires, distributors...) some how become exposed to moisture it is possible to get a rough running engine due to misfire(s) cause by arcking.

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I got a 99 s10 that always pops an evap small leak detected code but never ran rough.Now this time the mil light came on I scaned it and its got a p0420 code and its been running rough. i know the cats...

The Cat is good,not if it is 12 years old

Only a select few last 14 years

O2 Sensors should be changed every 100,000 miles

Tune-up --- as in spark plugs?
No tune-up in my world, in the last15 to 20 years

ECM/PCM has been tuning all vehicles since 1980

An EVAP Code for a small leak or any evap issue,
obviously needs to be diagnosed & repaired within
a week,as you should with any OBD Codes,you don't
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Running rough and stalls

do a compression check have a feeling it could be head gasket blowing between cylinders 2/3

May 01, 2010 | 2000 Ford Escort

1 Answer

1999 ford windstar has a p01309 code. what's the fix to make the code go away? thanks

The code means that there's too much variance in the speed of the firing of the cylinders and therefore the misfire monitor is disabled, in a nut shell the pcm is saying the car is running too rough to pinpoint exactly which cylinder is misfiring.

This can be caused by problems with

cam sensor or circuit
CPS = crank position sensor or circuit
MAF sensor or circuit
CTS = coolant temp sensor or circuit

My question is how is the car running? If it is running smoothly I would check synch of the cam sensor (requires special tool) and or replace it.

Jan 23, 2010 | 1999 Ford Windstar

1 Answer

My 1993 ford Taurus is running rough drives a

If it has NOT had a TUNE UP In A Long time THIS is MOST Likely the CULPRET as what you discribe ALL can be attributed to POOR TUNE Up PARTS.

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1 Answer


no problem. If you are getting that low of voltage on a load then you might want to test the alternator as well to make sure it is running at capacity.

Feb 23, 2009 | 1998 Ford Contour

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