# Service bulletin 1801301

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: 620067
- Published by NHTSA: 2001\-07\-11
- Manufacturer's number: 1801301
- Manufacturer's date: 2001\-06\-11
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

## NHTSA's summary

SOME VEHICLE ENGINES MAY EXHIBIT A ROUGH IDLE AND / OR MALFUNCTION INDICATOR LAMP \(MIL\) LIGHT ON CONDITION UPON INITIAL START\-UP AFTER A COLD SOAK WHEN TEMPERATURES ARE BELOW 50 DEGREES F \(10 DEGREES C\). THIS BULLETIN INVOLVES SELECTIVELY ERASING AND REPROGRAMMING THE POWERTRAIN CONTROL MODULE \(PCM\) WITH NEW SOFTWARE. \*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

## Vehicles listed

- 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.\~
- [R2118796A](/bulletins/10191460.md), 2021-05-03, Service bulletin: ENGINE AND ENGINE COOLING. Valve Body. These may cause over drive cycling.
- [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.\~
- [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
- [1803103](/bulletins/10003986.md), 2003-11-11, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. 4.0L ROUGH ENGINE IDLE AFTER RESTART FOLLOWING A HOT SOAK. \*TT
- [0900303](/bulletins/10003538.md), 2003-10-23, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. 4.0L MULTIPLE CYLINDER MISFIRE. \*TT
- [1801202](/bulletins/630965.md), 2002-04-30, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SUBJECT REGARDING COLD START RPM FLARE. \*JG
- [0700401A](/bulletins/628323.md), 2002-03-07, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. EXPERIENCING HIGH ENGINE TEMPERATURES DUE TO EXTENDED IN\-GEAR IDLING IN HOT AMBIENT TEMPERATURES. \*TT
- [1801601](/bulletins/620921.md), 2001-09-04, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. SOME CUSTOMERS MAY EXPERIENCE AN EXHAUST BOOM\-LIKE SOUND IN THE PASSENGER COMPARTMENT WHEN THE ENGINE IS IDLING. \*TT

JSON: [/v1/bulletins/620067](/v1/bulletins/620067)

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