When the car is accelerating, spark plug cables may cause intermittent misfires and popping sounds from the engine compartment.
Problems for specific Dodge Intrepid years:
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Most reported 1996 Dodge Intrepid problems
A loose timing chain on early models will produce a rattle (in the front of the engine) because the chain hits the guide. The timing chain should be replaced (the cam sprocket should always be replaced at the same time). Remove and discard the timing chain guide; on later V6 models, the guide has been eliminated.
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.
A defective fuel pump check valve (which maintains fuel pressure in the system when the vehicle is not running) may lead to long cranking times or hard starting (sometimes with stalling). The fuel pump should be replaced. However, if these symptoms are accompanied by Check Engine Light illumination, there may be a problem with the engine coolant temperature (ECT) sensor.