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Plymouth Neon Problems

Find the most common issues based on Plymouth Neon owner complaints.
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Most Common Plymouth Neon Problems

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.
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 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.
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3 Known Plymouth Neon Brakes Problems

Cars without ABS suffer master cylinder failure. The brake pedal will be spongy in feel, the pedal travel will seem excessive, and overall braking performance will be poor.
Front brake pads can wear prematurely in city or commute type driving conditions. Heavy duty brake pads are recommended.
There was a recall to replace the vacuum hose for the brake booster. In the presence of oil, the original hose could swell and become disconnected. The brakes would function but power assist would ...

2 Known Plymouth Neon Drive Train Problems

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.
The ignition key may become difficult to remove on models with a tilt steering wheel. Make sure the gear shift lever is in "Park" and sometimes placing the steering wheel in the lowest position hel...

4 Known Plymouth Neon Electrical & Lights Problems

Erratic or intermittent windshield wiper operation can be caused by a poor ground connection at the grounding strap.
If the needles for the instrument cluster are on the wrong side of the pointer stops, perform a "self test" on the instrument cluster. Press and hold the trip-reset button and then turn the ignitio...
If the screws holding the case of the powertrain control module (PCM) are not tight, the tachometer may fluctuate or bounce from 300 to 1000 RPM while driving at a steady speed.

8 Known Plymouth Neon Engine Problems

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

1 Known Plymouth Neon Exhaust & Emissions Problem

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 repl...

2 Known Plymouth Neon Heating & Air Conditioning Problems

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

0 Known Plymouth Neon Maintenance Problems

4 Known Plymouth Neon Miscellaneous Problems

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 ...
Lubricating the flocked parts of the vertical window weatherstrips with Mopar Weatherstrip Lubricant can help with slow power windows or ease window cranking effort.
The interior lights may stay on or flicker intermittently if the door jamb switches are out of adjustment. The switches may require replacement because they are self-adjusting.

2 Known Plymouth Neon Suspension & Steering Problems

An improperly tensioned serpentine belt may cause a momentary loss of power steering assist when driving in heavy rain or through puddles.
A click heard when turning the steering wheel may be solved by aligning the steering column or installing revised parts in the column (requires removal of the steering column).

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Known Plymouth Neon Problems & Complaints

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 repl...
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 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.
Cars without ABS suffer master cylinder failure. The brake pedal will be spongy in feel, the pedal travel will seem excessive, and overall braking performance will be poor.
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 issu...
There was a recall to replace the vacuum hose for the brake booster. In the presence of oil, the original hose could swell and become disconnected. The brakes would function but power assist would ...
The engine may develop misfires when accelerating up a grade or when carrying a heavy load. This can be from carbon tracking that has developed on the spark plugs causing the plug to not fire (misf...
An improperly tensioned serpentine belt may cause a momentary loss of power steering assist when driving in heavy rain or through puddles.
When a no start condition is caused by a faulty camshaft or crankshaft sensor, related fault codes stored in the powertrain control module (PCM) should not be trusted. Our technicians tell us that ...
If the screws holding the case of the powertrain control module (PCM) are not tight, the tachometer may fluctuate or bounce from 300 to 1000 RPM while driving at a steady speed.
There have been reports of premature head gasket failure; an updated gasket design is available to correct this problem.
Front brake pads can wear prematurely in city or commute type driving conditions. Heavy duty brake pads are recommended.
If there is a water leak into the passenger side of the interior, under the dash panel, it may be the heating, ventilation and AC (HVAC) housing drain is plugged or restricted.
The fuel level sensor can wear out causing erratic or inaccurate fuel gauge readings.
If the vehicle overheats because the cooling fan is not turning on, or if the AC is not working, it may be due to a defective RFI fan filter module (located at the center, near the bottom of the fa...
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