The battery light may illuminate on the instrument panel because the alternator wire harness connector is damaged. A new connector kit is available and should be installed to correct this concern.
Problems for specific Ford Crown Victoria years:
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Most reported Ford Crown Victoria problems
It is not uncommon for the intake manifold and/or valve cover gaskets to develop a coolant or oil leak. Leakage from the intake manifold may result in coolant in the engine oil. Coolant mixing with the engine oil severally impacts the lubrication ability of the oil. Internal engine may result if this condition is not repaired promptly.
Transmission problems are common in this model, often as a result of a failed front pump. The pump loses its ability to create hydraulic pressure, which an automatic transmission needs to function. A sign of front pump failure can be a whine type noise.
The throttle position sensor (TPS) may fail. Common symptoms of a defective TPS can be rough idle, hard starting, hesitation on acceleration, poor fuel economy, and stalling.
The alternator may get too hot, causing premature bearing failure.
Starter failed on my 2001 crown victoria, Dec' 2011. Car would produce one loud click (the pinion bearing coming out), but not turn over. After several attempts it would eventually turn over. Battery is six years old so it's not putting out as well as it use to... Pulled the starter out (3 bolts, what a PAIN.. hint: use a 1/4" socket wrench for the top bolt!) and tested with just battery, same problem. Had it tested at the auto parts store...
Severe oil leak causing the need to add up to one or more quarts of oil every couple of days. The oil leaks most when engine is off. The longer the car sets, the more the oil leaks, until it is all gone. Caused by extreme severe corrosion of oil pan. The corrosion is 'flaky' and pieces of the pan come off in layers. Oil seeps right thru the corrosion. The only solution is to have oil pan replaced, which is a major repair.
Hooting, moaning sound similar to ship's horn or foghorn coming from engine. Sound initially only happens for brief periods during warm up, but then occurs during driveaway & while idling at red lights, stop signs, etc. Sound originates from the IAC Tube that connects the Idle Air Control Valve to the air intake tube. Fix is addressed in Ford Article 94-22-4. Problem is the factory IAC Tube. Original tube needs to be replaced with a re-en...
check wires in visor for visor lights,will chafe and short to ground over time and blow fuse. tape or heat shrink exposed wire to solve problem.