Voltage spikes can cause erratic behavior in the electrical system (lights, locks, wipers, head lamps). This is often caused by relays. Inspection and replacement of relays is required; revised relays are available.
Problems for specific Dodge Grand Caravan years:
Car problem reports
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Most reported Dodge Grand Caravan problems
The airbag warning light may remain illuminated while the ignition switch is in the "on" position. This can be caused by water that has entered into the airbag six-way connector in the engine compartment.
Carbon buildup on the top of the piston is common. Over time this can lead to symptoms varying from light ticking to knocking noises. Performing a fuel injector cleaning procedure can often help the condition by removing some of the piston top deposits.
On higher-mileage vehicles, engine oil leaks from the valve covers and front crankshaft seal are common.
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.
If you hear a popping, clunking, or snapping sound from the front of the vehicle after five miles of driving on smooth surfaces, the outer tie rod ends may be worn and require replacement.
A malfunctioning switch in the steering column can cause the front windshield wipers to self-activate or not turn off. A failed windshield switch will require replacement.