Rouge idle when cold
Just had my FICM from my 2004 F250 6.0L tuned by PHP. Installed it and cleaned my EGR at the same time. When I started the engine, it ran very rough, like several cylinders missing. When it warmed up after several minutes it ran better than it has in a long time.
Started it the second morning, same thing. Very rouge idle with pronounced miss. Ran fine after 10 min warmup.
Some tell me that the problem requires that I have my PCM flashed with the latest program.
If I have the PCM reflashed, will it invalidate the PHP FICM tune?
Any advice is appreciated.
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2004 F250 King Ranch
186,000 miles and rolling
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Fri, December 25th, 2009, 05:13 PM
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