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Jeep Cherokee
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Transmission and transfer case » Automatic transmission-30RH » Diagnosis and testing
Causes of burnt fluid

Burnt, discolored fluid is a result of overheating which has two primary causes.

(1) A result of restricted fluid flow through the main and/or auxiliary cooler. This condition is usually the result of a faulty or improperly installed drainback valve, a damaged main cooler, or severe restrictions in the coolers and lines caused by debris or kinked lines.

(2) Heavy duty operation with a vehicle not properly equipped for this type of operation. Trailer towing or similar high load operation will overheat the transmission fluid if the vehicle is improperly equipped. Such vehicles should have an auxiliary transmission fluid cooler, a heavy duty cooling system, and the engine/axle ratio combination needed to handle heavy loads

Fig. 54 Ignition Interlock Cable Routing
Fig. 54 Ignition Interlock Cable Routing

1 - SHIFT MECHANISM
2 - LOCK-TAB
3 - IGNITION LOCK INTERLOCK
4 - STEERING COLUMN
5 - SOLENOID
6 - WIRE CONNECTOR
7 - LEVER
8 - MOUNT BRACKET
9 - SHIFT CABLE
10 - AUTOMATIC TRANSMISSION
11 - TIE STRAP
12 - PARK/BRAKE INTERLOCK CABLE

Fig. 55 Ignition Key Cylinder Actuation
Fig. 55 Ignition Key Cylinder Actuation

1 - SLIDER LOCKED
2 - CAM RETURN SPRING
3 - INTERLOCK CABLE
4 - CAM
5 - SLIDER

    More about «Diagnosis and testing»:

    Automatic transmission diagnosis

    Effects of incorrect fluid level

    Causes of burnt fluid

    Fluid contamination

    Preliminary diagnosis

    Park/neutral position switch

    Gearshift cable

    Throttle valve cable

    Road testing

    Analyzing road test

    Hydraulic pressure test

    Air testing transmission clutch and band operation

    Converter housing fluid leak diagnosis

    Diagnosis charts

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