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1999 Dodge Neon Problems

RepairPal has identified the most common problems with the 1999 Dodge Neon based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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12
Known Problems

The radiator cooling fan may fail to turn on resulting in an engine overheating condition, or The fan may not turn off once it is on. Chrysler has released a service bulletin to address this issue. The repair involves install a jumper wire harness and new cooling fan relay.

Spark plug tube seals fail, causing the tubes to fill with engine oil and the engine to misfire. As a result, the engine may run poorly and fuel economy can suffer.

An engine Oil leak may develop at the cam sensor o-ring seal. Our technicians tell us this is often misdiagnosed as an external head gasket leak.

If a Check Engine Light illuminates indicating leak detection pump (LDP) failure, the cause is often pinched or disconnected vacuum lines to the pump. Vacuum lines should be inspected before replacing the leak detection pump. Contamination (carbon or debris) in the pump can cause failure and any hoses should be cleared before a new pump is installed.

The fuel level sensors can wear out causing erratic or inaccurate fuel gauge readings.

If there is a water leak into the passenger side of the interior, under the dash panel, it may be the HVAC housing drain is plugged or restricted.

There have been reports of premature head gasket failure; an updated gasket design is available to correct this problem.

Some vehicles may develop a musty odor coming from the HVAC system, Dodge has issued a cleaner/disinfectant and a coating for the evaporator designed to inhibit bacterial growth.

An improperly tensioned serpentine belt may cause a momentary loss of power steering assist when driving in heavy rain or through puddles.

A clicking or popping sound from the front of the vehicle (left or right side) while accelerating from a stop may be fixed by installing a rubber gasket on the axle shaft.

Lubricating the flocked parts of the vertical window weatherstrips with Mopar Weatherstrip Lubricant can help with slow power windows or ease window cranking effort.
When the trunk lid weatherstrip (seal) is worn, the lid may rattle, water may leak into the trunk, or dust may get into the trunk. After installing a new trunk lid (deck lid) weatherstrip, be sure to adjust the trunk slam bumpers so the power trunk latch opens the trunk on the first attempt.