Mechanics

300M MISSING

2004 Chrysler 300

300M-2004- 115,000 miles-3.5L

At 2400 RPM engines surges, bucks and seams to missfire. Can ramp up speed until this point with no problem The engine code said that it was a cam/crank sensor. The sensors have been replaced as well as the spark plugs but the problem still exists. Any ideas?
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Boxers2
November 3, 2007.




Is it storing any missfire codes? If not try testing the fuel pump pressure! If it is test the COP's

Merlin2021
Nov 3, 2007.
Fuel pump pressure is OK
Will check COP's
Could it possibly be a faulty MAF sensor?
Has a pronounced " sucking air" sound when the problem occurs.

Tiny
Boxers2
Nov 3, 2007.
Only if there is an air leak in the plastic air induction system, any cracks will bypass the MAF! Get some spray gumout and spray around vac lines and manifold if the idle changes, you have a leak! You can test the MAF by unplugging it and going for a short ride, if symtoms improve replace it.
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Merlin2021
Nov 3, 2007.

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