In the beginning ,the car started to go dead whenever it idled too low or at a stop,even when driving at a low speed...i have had all the hoses checked,no leaks,and just replaced a sencer and now,when you crank it,the motor rivs up high and there is a loud roaring in the front of the motor like possibly coming from the water pump ???? the machanic says he has tried everything and cannot fiqure out the problem...can ya help?? thanks!
Have the engine cooling fan operation checked, it may be defective and that can cause the noise.
SOURCE: HOW TO STOP THAT FRONT END SQUEAKING NOISE!! (NOT STEERING PUMP)
Probably the upper strut plates.
SOURCE: 2003 Mercury Mountaineer
First Examine the air intake tube( the big black one).there are two silencer chambers on it-one on the side by the elbow and one underneath. I f either one is missing, when the Idle Air Controller (IAC) opens to compensate for the A/C compressor cycling it will make a gurgling/thrumming/roaring sound. if this does not fix it, check around intake/throttle body for loose connections.
SOURCE: 2003 Mountainer location of OBD2 connection
it is under the dash on the drivers side just to the right of the column.
SOURCE: Car won't idle without revving when cold and dies when in drive
This Vehicle needs an Idle air control/Idle speed motor. Good Luck
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