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2005 Chrysler Pacifica Problems
The engine may develop a ticking noise, often caused by a broken retaining pin on the rocker arm shaft. When the pin breaks, the shaft can spin blocking the oil passage the rocker arms (which causes the ticking noise). The rocker arm shafts, rocker arms, and pedestals (sold as a kit) are commonly replaced in order to correct this condition.
Static discharge and/or loose wire connections could cause problems with the front power seat memory, seat heaters, and adjustable pedals. Revised seat modules are available that resist the affects of static discharge.
Carbon buildup on the valves may illuminate the Check Engine Light, indicating "Multiple Cylinder Misfires." The combustion chamber must be cleaned of carbon. There are updated valve spring retainers that will help prevent a recurrence.
Static discharge through the right (passenger) front door handle can result in a loss of functionality from the right front door switches, power mirrors, seat controls, and door locks. There is a revised door handle which is more static resistant. A new door module may be needed if the module does not reset properly.
If the HVAC (heater) housing is not properly sealed at the bulkhead (firewall), water can leak into the passenger compartment. Foam sealant should be used to seal any gaps and the evaporator drain tube can be modified to prevent further water entry.
A problem with a solenoid valve in the transmission may cause the Check Engine (MIL) light to come on.
"False" trouble codes may cause erroneous illumination of the Check Engine Light. Updating the PCM software can often correct this concern.
Misalignment of the drive belt pulleys can cause a chirping or squeaking noise from the drive belt.