I have 2004 ford fx it's has 96000 miles and I have nothing but trouble with it in the last year.


Asked by Apr 22, 2013 at 11:14 AM about the 2004 Ford F-150 FX4 4WD

Question type: Maintenance & Repair

The engine seems to run fine until I go over 2000 rpm.  The engine sounds like its gonna
blow through the hood. The sound it's makes is like when you start it when it's the coldest
day ever a really bad whining noise. I have no idea what it could be thought I'd ask other
people if they'd had this problem before it goes to the mechanic. I have never missed oil
change or putting in a fuel system cleaner.

5 Answers

Tom Demyan

Maybe it's a seized up radiator fan clutch. With the motor off, open the hood and try to spin the fan with your hand, it should spin about a quarter to half turn and no more. If you can't move it, time for a new one.


Fan moves freely

Tom Demyan

Have you been able to pinpoint the source of the noise? Most probably a pulley or bearing.


Unable to pinpoint sounds like its in the general area of fan.

Tom Demyan

Your best bet is to remove the fan and shroud and then release the belt and start spinning the pulleys by hand to determine which one is giving you the issue. They should not spin freely, or make noise, just a half revolution. Could be the belt tensioner pully, alternator bearing, water pump bearing, etc. Engine off of course.

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