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Ford f700 The truck idles fine but when under heavy load it starts coughing and will not accelerate

The problem started while towing a heavy load. It was intermitten at first and now when ever under heavy load the truck starts popping and missing. the lower the gear the less problems. at first it would only have problem in 5th gear and when I down shifted the problem went away

Posted by Anonymous on

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

SQUIRESXX
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SOURCE: Hyundai i30 Diesel automatic won't accelerate above idle at light

DOES THE ENGINE MIL WARNING LIGHT COME ON? WITH OUT MORE INFO YOU NEED TO CHECK MOTOR ON A CODE READER FOR STORED FAULTS, CHECK ALL AIR LINES TO EMMISION CONTROL, , SOUNDS LIKE YOU HAVE GONE INTO SAFE MODE, A SPLIT OR LEAKING PIPE ON THE INTERCOOLER IS A COMON FAULT ON THESE, IF YOU SWITCH ENGINE OF AND BACK ON QUICKLY WITH MOTOR RUNNING WITH OUT STALLING MOTOR AND IT CLEARS THEN IT IS PROBERLY THE SAFE MODE CUTING IN MEANING A FAULT HAS BEEN SEEN BY PCM

Posted on Dec 07, 2009

Testimonial: "Thanks.Didn't notice any engine lights came on. I had a problem free day today, but if it happens again will check warnings and PCM computer check"

dj_relly999
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SOURCE: 1997 Dodge Ram 4x4 1500 transmission shifting problems.

good day, you may try replacing your automatic transmission fluid, a good run will be noticeable, hope this helps, have a nice day

Posted on Feb 08, 2010

  • 4793 Answers

SOURCE: Car popping out of 5th gear

baulk ring in gearbox needs replacing.(otherwise you need to hold gearstick in 5th)

Posted on Apr 11, 2010

  • 1 Answer

SOURCE: Under heavy acceleration the car stumbles, runs rough

I am having the same problem with my mustang, have replaced tps, egr valve and sensor, clean maf, new plugs and wires, new fuel filter, cleaned throtle body and still having same problems....Please help!!!!!

Posted on May 27, 2010

Awaji
  • 77 Answers

SOURCE: my ford v10 engines hesitates under load. It

1 Ignition system not operating properly
2 Dirtyor clogged fuel injector(s).
3 Low fuel pressure. Check for proper operation of the fuel pump and for restrictions in the fuel filter and lines.
4 Fuel injectionor engine control systems malfunction.
5 Vacuum leak at the intake manifold or vacuum hoses.
6 Restricted air filter.
7 Fuel pump or pressure regulator defective.

Posted on Dec 05, 2010

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