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Problems for specific Ford Aerostar years:

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Repairpal verified 1994 Ford Aerostar problems

 

Verified for the Ford Aerostar

If a noise from the rear end is heard when going around turns or after driving at highway speed for an extended period, this could be caused by a failing deferential clutch kit. An updated differential clutch kit available.

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Verified for the Ford Aerostar

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.

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Verified for the Ford Aerostar

If you experience poor idle quality and fuel economy (and the Check Engine Light illuminates) after the exhaust system or motor has been removed and replaced, it could be that the oxygen sensor wires are crossed at the rear of the motor. Wiring schematics should be checked to ensure that the correct harness plug is connected to the corresponding sensor.

 

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Verified for the Ford Aerostar

The AC system may be performing poorly even if it seems to be functioning properly. This could be caused by the AC air blend door being out of adjustment.

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Verified for the Ford Aerostar

Excessive cycling of the AC compressor clutch when the system is fully charged could be caused by sludge that has built up on the engine throttle body. Throttle body should be cleaned periodically unless there is a sticker on it stating no cleaning is allowed. Some throttle bodies have a special coating that should not be cleaned.

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Verified for the Ford Aerostar

The valve cover gasket may fail, causing engine oil to leak onto the exhaust manifolds.

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Verified for the Ford Aerostar

Engine oil leaks are known to develop around the rear crankshaft (main) seal and engine oil pan gasket.

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Verified for the Ford Aerostar

An engine knocking noise coming from the lower end during acceleration is common and could be caused by worn or damaged engine bearings.

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Verified for the Ford Aerostar

Vacuum hose damage is common due to engine oil contamination or a plugged PCV valve.

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