Problems for specific Dodge Avenger years:
Car problem reports
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Most reported 2000 Dodge Avenger problems
A defective vehicle speed sensor can cause problems with the cruise control and speedometer operation, as well as erratic shifting. The connectors on the sensors are also susceptible to corrosion, which will create similar symptoms. Any of these problems can cause Check Engine Light illumination.
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.
There have been reports of premature head gasket failure; an updated gasket design is available to correct this problem.