FaultScore

1990 Jeep Wrangler engine problems

11 of the 105 complaints about the 1990 Jeep Wrangler are about the engine — 10% of everything reported for this model year. Half of the failures with a mileage on record happened before 99,000 miles.

A

11

Complaints

0

Crashes

0

Fires

0

Injuries

Exactly what failed

Engine 5 45.5%
Manifold/Header/Muffler/Tail Pipe 3 27.3%
Gasoline 1 9.1%
Catalytic Convertor 1 9.1%
Engine 1 9.1%

Engine & Cooling across every Jeep Wrangler year

1989 13 0.5%
1990 11 0.4%
1991 14 0.5%
1993 19 0.7%
1994 29 1.1%
1995 39 1.4%
1997 122 4.5%
1998 58 2.2%
1999 53 2.0%
2000 28 1.0%
2001 26 1.0%
2004 13 0.5%
2005 40 1.5%
2006 29 1.1%
2007 62 2.3%
2008 48 1.8%
2009 23 0.9%
2010 53 2.0%
2011 42 1.6%
2012 179 6.6%
2013 144 5.3%
2014 331 12.3%
2015 130 4.8%
2016 93 3.4%
2017 62 2.3%
2018 101 3.7%
2019 48 1.8%
2020 59 2.2%
2021 218 8.1%
2022 89 3.3%
2023 100 3.7%
2024 397 14.7%
2025 24 0.9%

What owners said

Filed with NHTSA, in their own words.

Midland, MI

ENGINE

RECALL 617 WAS NOT REPLACED. E BRAKE CABLES NOT REPLACED. DID NOT REPLACE BOTH FRONT BRAKE CALIPERS. I HAD TO GET, TWO NEW DIFFERENTIALS AND CLUTCH IN LESS THAN A YEAR. WITH THE NEW RECALLS LISTED IN THE PAPER WHAT ABOUT MY GAS TANK? THIS IS ANOTHER SAFETY MEASURE TO KEEP MY VEHICLE SAFE ON THE ROAD.

NHTSA complaint #10744164 — an unverified report by a vehicle owner.

at 99,000 miles Crestline, CA

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

EXHAUST MANIFOLD LEAKS DUE TO THE CYLINDER HEAD WARPING AND CRACKING THE MANIFOLD.

NHTSA complaint #10024327 — an unverified report by a vehicle owner.

at 99,000 miles Crestline, CA

ENGINE AND ENGINE COOLING:ENGINE

EXHAUST MANIFOLD LEAKS DUE TO THE CYLINDER HEAD WARPING AND CRACKING THE MANIFOLD.

NHTSA complaint #10024327 — an unverified report by a vehicle owner.

Amherst, OH

ENGINE AND ENGINE COOLING:ENGINE

OIL IS GOING STRAIGHT THROUGH THE BREATHER TUBE FROM VALVE COVER TO THE AIR FILTER THEN INTO EXHAUST MANIFOLD AND BURNING OUT EXHAUST (1 QUART A WEEK)NOT THE PCV TUBE THE TUBE IN THE REAR OF VALVE COVER.

NHTSA complaint #720628 — an unverified report by a vehicle owner.

Paterson, NJ

ENGINE AND ENGINE COOLING:ENGINE

OIL LEAKS.

NHTSA complaint #603454 — an unverified report by a vehicle owner.

Paterson, NJ

ENGINE AND ENGINE COOLING:ENGINE

OIL LEAK.

NHTSA complaint #603452 — an unverified report by a vehicle owner.

Paterson, NJ

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

CATALYTIC CONVERTER REPLACEMENT RESULTED IN A NOXIOUS BURNT SULFUR SMELL WHEN ASCENDING A HILL.

NHTSA complaint #603452 — an unverified report by a vehicle owner.

Torrington, CT

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

WHILE DRIVING 65 MPH THE FRONT LEFT WHEEL AND TIRE FELL OFF, CAUSING THE VEHICLE TO SKID. *AK TWO DAYS AFTER PURCHASE THE VEHICLE STALL, WOULD NOT START AND WAS NOT HOLDING IN IDLE. THE PROBLEM STILL EXISTED BEING THEN, VEHCILE LOOKED AT BY INDEPENDENT INSPECTOR AND WAS DISCOVERED THAT THE MUFFLER, BALL JOINTS AND U-JOINT HAD FAILED. THE VEHICLE WAS REPAIRED AT CONSUMER'S EXPENSE, STILL THE VEHICLE IDLES IMPROPERLY.

NHTSA complaint #815876 — an unverified report by a vehicle owner.

Torrington, CT

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

WHILE DRIVING 65 MPH THE FRONT LEFT WHEEL AND TIRE FELL OFF, CAUSING THE VEHICLE TO SKID. *AK TWO DAYS AFTER PURCHASE THE VEHICLE STALL, WOULD NOT START AND WAS NOT HOLDING IN IDLE. THE PROBLEM STILL EXISTED BEING THEN, VEHCILE LOOKED AT BY INDEPENDENT INSPECTOR AND WAS DISCOVERED THAT THE MUFFLER, BALL JOINTS AND U-JOINT HAD FAILED. THE VEHICLE WAS REPAIRED AT CONSUMER'S EXPENSE, STILL THE VEHICLE IDLES IMPROPERLY.

NHTSA complaint #815876 — an unverified report by a vehicle owner.

Anaheim Hill, CA

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

EXHAUST MANIFOLD CRACKED.

NHTSA complaint #969283 — an unverified report by a vehicle owner.

Queen Villag, NY

ENGINE AND ENGINE COOLING:ENGINE

BOLTS THAT HOLD THE MOTOR MOUNT TO BLOCK SHEARRED OFF, ALMOST RESULTING IN CONTROL LOST. TT

NHTSA complaint #958387 — an unverified report by a vehicle owner.

Other 1990 Jeep Wrangler problems

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