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  1. 99-03 7.3 Motor Problems
    I was driving, and was at a stop light. My idle was fluctuating 200-300 rpm. I did notice earlier when I was cleaning my intercooler boots that the plastic part on top of the IPR moves around. Also, whatever it is, is very sensitive because it will be rough, the stop at ramdom times. I am at my...
  2. 99-03 7.3 Motor Problems
    Hello guys, I have a 2002 Ford F250 7.3L that I bought new in '02. Recently the engine lost power and ran really rough. I brought it to my local mechanic who had to replace the main wiring harness and the passenger side Under Valve Cover Harness. They also replaced two injectors on the...
  3. 99-03 7.3 Motor Problems
    Truck starts fine when cold. I let it warm up 5 to 10 minutes then drive on flat roads keeping rpms below 1800 till engine is in normal range about another 5 to 10 minutes of driving. Problem starts right before engine reaches normal driving temps. It starts to shudder like its misfiring. Idles...
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