# Service bulletin 8591/8592

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 610645
- Published by NHTSA: 2000\-05\-09
- Manufacturer's number: 8591/8592
- Manufacturer's date: 2000\-03\-01
- Replaces: 250299
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

## NHTSA's summary

SUBJECT REGARDING THE ON\-BOARD DIAGNOSTIC \(OBD\) SYSTEM ON ABOUT 309,000 VEHICLES LOCATED OUT OF CALIFORNIA AND VEHICLES LOCATED IN CALIFORNIA WILL NOT DETECT A CATALYST FAILURE AS REQUIRED BY FEDERAL AND CALIFORNIA REGULATIONS. \*TT

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Engine, Exhaust and emissions

## Vehicles listed

- 2000 DODGE DAKOTA
- 2000 DODGE DURANGO
- 2000 DODGE RAM PICKUP
- 2000 DODGE RAM VAN
- 2000 DODGE RAM WAGON
- 2000 JEEP CHEROKEE
- 2000 JEEP GRAND CHEROKEE
- 2000 JEEP WRANGLER

## Recalls for the same vehicles and component

- [06V199000](/recalls/nhtsa/06V199000.md), 2006-06-08: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
- [2002074](/recalls/tc/2002074.md), 2002-04-17: Engine

## Other bulletins for the same vehicles and component

- [05191925A](/bulletins/10228094.md), 2022-12-19, Service bulletin: ENGINE AND ENGINE COOLING. Radiator If vehicle comes in for transmission fluid leaking from trans\-oil cooler fittings on the radiator, please perform the following before replacing the radiator/cooler:\~ 1. Remove both of the transmission lines from the cooler?s top/bottom flared fittings on the radiator. \~ 2. Remove hex nut and the top flared fitting on the radiator tank.\~ 3. Using a wire brush and gasket remover, clean off the old sealant on the smaller threaded portion of the flared fitting. Do the same for the threads on the trans oil cooler.\~ 4. Apply a new application of Mopar PN 04318032 to the flared fitting, leaving the first threads free for ease of engagement.\~ 5. Install the top flared fitting by hand, then torque the fitting to 235 \+/\- 15 Lb\-In.\~ 6. Install the hex nut and torque to 100 \+/\- 10 Lb\-In.\~ 7. Repeat steps 2\-6 for bottom flared fitting.\~ 8. Reinstall transmission line per normal installation procedures and ensure correct fluid level.\~
- [68332810](/bulletins/10223854.md), 2022-10-17, Service bulletin: ENGINE AND ENGINE COOLING. Service \- Four Piece Oil Pan Gasket All Cummins Equipped Vehicles ONLY \- The replacement oil pan gasket can be a four piece gasket rather than a single piece gasket. This applies to Cummins 5.9L and 6.7L engines only. Installation: 1. Clean the oil pan T\-joints.\~ 2. Fill the T\-joint between the pan rail/gear housing and pan rail/rear seal retainer with sealant. Use Mopar® Silicone Rubber Adhesive Sealant or equivalent. 3. Apply a 2\-mm \[0.063\-in\] bead of Mopar Engine Sealant RTV Silicone Rubber Adhesive, to the oil pan flange.\~ 4. The four piece gasket will need to be assembled to make a complete oil pan gasket. 5. Lay the oil pan gasket\(s\) onto the oil pan flange.\~ 6. Ensure the oil pan gasket segment joints are properly aligned. 7. Apply a 2\-mm \[0.063\-in\] bead of Mopar Engine Sealant RTV Silicone Rubber Adhesive, to the top of the oil pan gasket.\~ 8. Install the oil pan. Starting from the center and working outward, tighten the oil pan bolts to 28 N·m \[21 ft. lbs.\].
- [R2118796A](/bulletins/10191460.md), 2021-05-03, Service bulletin: ENGINE AND ENGINE COOLING. Valve Body. These may cause over drive cycling.
- [68332810A](/bulletins/10191455.md), 2021-05-03, Service bulletin: ENGINE AND ENGINE COOLING. Cummins Equipped Vehicles ONLY \- The replacement oil pan gasket can be a four piece gasket rather than a single piece gasket. This applies to Cummins 5.9L and 6.7L engines only.
- [05191925A$](/bulletins/10181452.md), 2020-10-26, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING; POWER TRAIN. Radiator If vehicle comes in for transmission fluid leaking from trans\-oil cooler fittings on the radiator, please perform the following before replacing the radiator/cooler:\~ 1. Remove both of the transmission lines from the cooler?s top/bottom flared fittings on the radiator. \~ 2. Remove hex nut and the top flared fitting on the radiator tank.\~ 3. Using a wire brush and gasket remover, clean off the old sealant on the smaller threaded portion of the flared fitting. Do the same for the threads on the trans oil cooler.\~ 4. Apply a new application of Mopar PN 04318032 to the flared fitting, leaving the first threads free for ease of engagement.\~ 5. Install the top flared fitting by hand, then torque the fitting to 235 \+/\- 15 Lb\-In.\~ 6. Install the hex nut and torque to 100 \+/\- 10 Lb\-In.\~ 7. Repeat steps 2\-6 for bottom flared fitting.\~ 8. Reinstall transmission line per normal installation procedures and ensure correct fluid level.\~
- [9002688](/bulletins/10139009.md), 2018-06-04, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING. 68069384A$, R8069384A$, 68086182A$, R8027067A$, RL002012A$ \- Gasket, Cylinder Head Cover Before replacing injectors for Diagnostic Trouble Codes P0201, P0202, P0203, P0204, P0205, and/or P0206, please make sure that the wiring loom and/or connector in the valve cover gasket is not the root cause to your concern. In addition, make sure that the wiring attaching nuts are torqued to their proper value.\~
- [1100505](/bulletins/10018976.md), 2006-01-26, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. RATTLING SOUND FROM THE UNDERSIDE OF THE VEHICLE. CATALYTIC CONVERTER EXTENDED WARRANTY TO REPLACE THE CATALYTIC CONVERTER. \*TT
- [0900904](/bulletins/10006453.md), 2004-05-03, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. VACUUM PUMP SERVICE. \*TT
- [0901004](/bulletins/10006452.md), 2004-05-03, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. DIRT AND DEBRIS ACCUMULATION AT REAR MAIN SEAL. \*TT
- [1803903](/bulletins/10005644.md), 2004-03-10, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. ROUGH IDLE DUE TO HIGH AMBIENT OR HOT SOAK TEMPERATURES. THIS CONDITION MAY BE MOST NOTICEABLE WHEN THE ENGINE IS RESTARTED FOLLOWING A 10 TO 20 MINUTE HEAT SOAK IN HOT AMBIENT CONDITIONS OF APPROXIMATELY 32 DEGREES C OR HIGHER. \*TT

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