Question about 2001 Ford F250 Super Duty Super Cab

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2001 f 250 5.4 hesitates when accelerating

Truck hesitates when speeding up put it on computer no codes were found no check engine light on could it b a coil

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  • Don Jones Feb 16, 2009

    I have a 2000 f250 5.4 112000 miles runs good other than cutting out when accelerating set the cruise on whatever speed and it is fine intill you hit a hill and need to speed up and it cuts out . I have had no engine light. I changed the fuel filter ran some cleaner thru the gas and changed the plugs[which looked good] ancleaned and greased the boots and coils 3 of the coils had green tarnish on the prong and 1 looked possibly wet not sure if wet or grease. Is it safe to clean the m.a.f. have heard diffferent opinions, I didnt check the fuel pump because it is fine when you kick it down hard but cuts out when you accelerate lightly. Appreciate any help, shoul I go ahead and drive it or park it?

  • yadayada
    yadayada May 11, 2010

    CHECK THE FUEL PRESSURE, WHEN U GUN THE ENGINE DOES IT GO UP? ALSO CLEAN THE INSIDE OF THE MAF SENSOR

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Check the exhaust compression. Remove the O2 sensors before the cataylic converts and see if it improves. If it does that means your cats are cloged and need to be replaced.

Posted on Feb 21, 2009

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Possible causes
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The P0305 code means that the cylinder 5 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 5. If the problem persist more tests needs to be done to diagnose problem, see "Possible Causes"
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When is the code detected?
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When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.

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