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rpm lunging
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  1. 99-03 7.3L Powerstroke Problems
    02 Ford f250 7.3 starts up, idles fine for a few minutes, then the RPM drops to around 500 then goes up to 1100 and keeps bouncing up and down for a little. Then it'll idle fine and then RPMs fluctuate again. It'll do this over and over until the temperature hits the the bottom line of the guage...
  2. 99-03 7.3 Motor Problems
    Well my truck has been having problems with power surges when driving. The rpms will jump from around 1500 up to 2000 for no reason...this is mostly noticed driving at slow speeds in the city, at highway speeds the problem isn't noticeable really. I had a shop run a scan for codes and try to run...
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