Question about 2003 Ford Crown Victoria
I replaced the intake manifold on my 2003 crown vic and now it runs bad with a slight knocking sound on drivers side of engine and cylinder number 8 is misfiring.
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Posted on Jan 02, 2017
take a look at the EGR valve it could be either vacum controlled or electronic either way what seems to be the problem is that the valve is stuck in the open position until the engine warms up you can gently tap the egr valve with a small hammer or a screw driver and you can see that it runs smooth, now if the egr valve is vacum controlled replace the valve. if it is electronoc controlled replace the valve and the module for the egr valve.
Posted on Nov 24, 2008
SOURCE: 2003 Ford Crown Vic Misfire
milage on this shouldn't matter, the light being on is probly just stuck, however you maay wanna check to be sure the brakes aint hangin up a little,
Also the surging can be causeed by the fuel pump goin out, may not be the case but something to look for, it will show up as random misfires as well, maybe try a good fuel addative, (could have a little water in it, check the fuel filter as well, alot of cars now days have a charcol filter and when they go bad they can be a issue, Pick up tube could also have a hole in it, the fuel pumpo on theese cars should be in the tank and are not fun to replace,
hope one of theese suggestions helps, there are many thing that can cause the problem your describing
Posted on Jan 08, 2009
I just came up with that exact issue in my 2003 with 98K police crown vic. And the last time I had this issue in a 2001 police Crown vic it was the crank shaft position sensor. A $20 part and about 30 mins to put it in. located near the bottom of the engine. I had to un bolt the A/C compressor and push it out of the way a few inches to get to the sensor. If you have about 100K mile on it and its an idled heavy police car, this sensor should be changed out anyway. It can leave you on the road dead and some dealers have a hard time find out whats wrong as the OBD 2 does not see it as a problem when it goes bad or becomes touchy as I think mine is.
Posted on Jan 12, 2009
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