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1991 Jeep CHEROKEE Power Train Automatic Transmission Problems, Complaints and Defects

Issue ID	235216
Internal NHTSA #	726289
Manufacurer	DAIMLERCHRYSLER CORPORATION
Brand	JEEP
Model	CHEROKEE
Model Year	1991
File date	01/10/91
Component	POWER TRAIN:AUTOMATIC TRANSMISSION
Product type code	VEHICLE
Description of the problem	The jeep cherokee equipped with the aw4 automatic transmission which is all auto vehicles manufactured since the begining of the 1987 model year have a serious design defect in the transmission that will cause unwanted and dangerous automatic downshifting into first gear from second gear at an unacceptable high rate of speed. If the operator has moved the shift lever into the 1-2 gear shift position for better control and engine braking and the vehicle speed drops below 28 to 23 mph the transmission will without warning abruptly downshift to first gear. If the vehicle is on wet, icy or gravel covered roads it will go into a skid condition usually with loss of vehicle control. When i took the vehicle into the dealer to have them fix the problem, they said they had never heard of the problem and contacted chrysler. Chrysler replyed that this was normal operation as per its design. Over the next year or two i contacted chrysler directly including their engineers. The said they were aware of the design defect, however not enough customers had complained about the condition to warrant them taking care of the problem. Of course it is not mentioned in their operators manual, and if someone lost control they would probably not have a clue as to what had caused it. I then came up with electronic circuitry that could be incorporated in the vehicles transmission control unit that fixed the problem. I offered it to the company in 1992 so they could make it either available to their past customers and to re-design the circuitry into the new cherokees produced since that time. They declined the offer. The design change would not have cost them more than $10. 00 per vehicle for retrofitting past vehicles and less than $5. 00 per vehicle to incorporate the circuitry into newly manufactured vehicles. You can find more info and chryslers response to the problem at http://www. Cherokee-jeep. Com thank you. *ak
Vehicle Mileage at Failure
Number of Occurences	1000
Source of the issue	NHTSA WEB SITE
City and State	AUMSVILLE, OR
VIN pattern	CHEROKEES 1XXXXXX
Was vehicle invloved in a crash?
Was vehicle involved in a fire?	N
Was incedent reported to police?	N
Was medical attention required?
Was part original equipment?
No. of injured persons	0
No. of fatalities	0
Date of purchase	01/08/91
Was original owner?	Y
Anti-lock brakes	Y
Cruise control	Y
Number of cylinders
Drive train type	4WD
Transmission type	AUTO
Vehicle speed	28
DoT tire identifier
Tire size
Location of tire code
Type of tire failure code
Was defective tire repaired?
Date of manufacture
Type of child seat code
Type of restraint
Dealer's name
Dealer's telephone number
Dealer's city
Dealer's state code
Dealer's ZIP code

What is Recall?
A recall is when a product is removed from the market or a correction is made to the product because it is either defective or potentially harmful.
What is Failure?
Failure is the state or condition of not meeting a desirable or intended objective, and may be viewed as the opposite of success. Product failure ranges from failure to sell the product to fracture of the product, in the worst cases leading to personal injury, the province of forensic engineering.
What is Defect?
Non-conformance of a car component with the specified requirements, or non-fulfillment of user expectations, including the safety aspects.

Last decoded VIN:

WUAZZZ4238N003425 VF1HJD20X67747933 KNAHT8A30E7015871 1GYS4FKL8PR492557 KNAHU815AF7100956 XTA210130C4019452 JT3GN86R810192598 JMBLNE54APZ001163 W1N2477861J292260 KNAFZ411BE5084380 WAUZZZF47HA128251 ZAR94000007067260

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1991 Jeep CHEROKEE Power Train Automatic Transmission Problems, Complaints and Defects, Recalls and Failures

1991 Jeep CHEROKEE Power Train Automatic Transmission Problems, Complaints and Defects

What is Recall?

What is Failure?

What is Defect?