Selenoides

IMPORTANT INSTALLATION NOTICE
The most failure prone component on the Chrysler A604 front wheel drive four speed automatic transaxle would probably be the electronic shift solenoid block assemblymounted on the outside of the transaxle case. This solenoid block assembly either experiences failure through leakage of the unit, electrical failure, corrosion, and/or normal wear. Replacement of theshift solenoid block assembly can be expensive especially if it was replaced because of leakage that may have been misdiagnosed. The most aggravating and most difficult diagnostics technicians mayencounter would be determining the main source of a leak. ATF that is confined and under pressure inside the transmission assembly will find its path to leak out from either a worn seal, o’ring, gasket,transmission lines or a hairline crack on the transmission case. We all know that when fluid leaks out, it usually runs from top to bottom. Since the solenoid assembly box is located at the lower sideof the transmission assembly and is surrounded by many components that are prone to leaking, it is important to inspect the other components first before blaming the leak on the solenoid assemblyblock. Furthermore, by adding ATF through the filler tube during maintenance, any ATF that may have spilled will easily run down towards the solenoid block assembly leading to misdiagnosing a solenoidleak. A simple procedure to acurately pinpoint the source of a leak is through a use of a special dye and a black lamp. The dye will appear, usually yellow in color, on the fluid leak when the light ofthe black lamp is shined on it. Below is an illustration of the Chrysler’s A604 transaxle assembly that points out important locations a technican would need to inspect before replacing a suspect leakysolenoid block assembly. So, before you perform service on the Chrysler A604 solenoid block assembly because of a leak, you may want to inspect the surrounding components to ensure that the leak is...