1997 Jeep Wrangler Problems

What owners report

Owners of this model year most often write about a cracked exhaust manifold on the 4.0L six-cylinder, which they describe as producing a loud noise and exhaust fumes in the cabin, and about frame rust developing from the inside out near the rear control-arm mounts. Fuel gauge and sending-unit faults, along with air bag warnings tied to the clockspring and horn, appear repeatedly in the sample. Many reports come in above 60,000 miles, and several describe problems noticed only during inspection or routine maintenance.

1. 1
   Engine cooling

   Cracked exhaust manifold

   • 66 complaints (16%)
   • median 60,000 mi at 6.8 yrs old (11 state mileage)
   • 5 mention a crash, fire or injury
   • filed 1998–2008

   Owners describe a loud noise from the engine bay and exhaust fumes entering the cabin, with mechanics finding cracks in the exhaust manifold, sometimes in several places. Several report the replacement part failed again after roughly another 50,000 miles. Complaints state that dealers acknowledged the problem in some cases, while the manufacturer declined assistance because the vehicle was out of warranty. Mostly reported between about 35,000 and 90,000 miles, with some failures noted around 55,000 miles.

   1 related service bulletin

   What to check: Listen for exhaust tick or hiss at cold start and smell for exhaust in the cabin; ask whether the manifold has been replaced and with which part.

   2 excerpts from owner complaints in NHTSA records

   “I am in the process of replacing the exhaust manifold on my 1997 Jeep Wrangler for the second time. The first one failed at approx 55k miles (out of warranty) and chrysler Jeep customer service denied existence of a problem with the exhaust system, in spite of numerous reports of manifold failure on many internet automotive sites. The replacement part was supposedly redesigned to prevent recurrence of the problem, but it has now failed (mileage is now 110k, so these are 55k parts!) and must also be replaced. …”

   NHTSA complaint #10131459, filed 2005-08, 55,000 miles

   “1997 Jeep Wrangler sport 4.0 liter exhaust manifold crack noted at approximately 60,000 miles. Mechanic stated it appeared to be welded, no one had previously welded exhaust manifold. My understanding is that the exhaust manifold in this year tends to crack. Is there a recall by the Jeep dealership? If so, I have not been notified. Also the throttle control sensor as well as o2 sensor effected at this time. Vehicle now has 81,000 miles runs poorly has visual crack at the exhaust manifold in two different areas. …”

   NHTSA complaint #10047217, filed 2003-11, 60,000 miles
2. 2
   Body and structure

   Frame rust from the inside out

   Mentioned in 10 of 60 sampled complaints

   Complaints describe the frame rusting through from the inside, often near the rear control-arm mounts, sometimes on vehicles that were garaged and looked clean outside. Owners report the rear control arms or their brackets separating from the frame, and in one case a brake line failing as a result. Several say the manufacturer told them the repair was their responsibility. Usually reported at higher mileage, from roughly 63,000 to over 200,000 miles, often on older vehicles in salt-road areas.

   What to check: Tap along the frame rails and rear control-arm mounts with a small hammer and look inside the frame holes for flaking metal; have a shop inspect the frame before purchase.

   2 excerpts from owner complaints in NHTSA records

   “Frame is rusting through at the upward bend towards the rear tires on both sides. Issue is constantly reported online, in forums, with endless numbers of pictures. This is a serious safety concern as it compromises frame integrity. This issue is usually noticeable from the outside but in my case it is rusting from the inside out so if I hadn't caught it I would be in danger.”

   NHTSA complaint #10898923, filed 2016-08, 135,000 miles

   “I have owned this vehicle since it was brand new. It has been garage kept for approx. 20 of its 21yrs. The rear frame where the trailing arms are attached to the brackets rusted out. The driver side trailing arms were almost ready to separate from the frame due to the frame rusting from the inside out. I had to cut out the section and replace it with a safe t cap patch. Cutting open the frame showed extensive rust on the inside of the frame. …”

   NHTSA complaint #11084993, filed 2018-04, 85,000 miles
3. 3
   Fuel system

   Fuel gauge reads wrong or empty

   • 31 complaints (8%)
   • median 73,814 mi at 7.2 yrs old (10 state mileage)
   • filed 1996–2021

   Owners report the fuel gauge showing a quarter or half tank when the tank is actually empty, dropping to empty with fuel remaining, or failing entirely. Some say the sending unit gasket was the source of a fuel leak at the rear of the vehicle. Complaints note that some vehicles with the same symptom were not covered by the related campaign because of their VIN. Reported across a wide mileage range, from very low mileage up to around 180,000 miles.

   What to check: Fill the tank and compare the gauge reading against actual fuel used; check for fuel smell or dampness around the tank and sending unit.

   2 excerpts from owner complaints in NHTSA records

   “I bought this 1997 Jeep Wrangler from a used car dealer in june 2002 with a limited warranty and was told the vehicle pased inspection and had no problems. Since then I have had to have the wiring harness repaired, the fuel pump replaced, the transmission replaced, it has a faulty fuel gauge reading, the intake and exhaust manifold need to be replaced and now the steering linkage or stabilizer bars are faulty.”

   NHTSA complaint #10070478, filed 2004-01, 74,000 miles

   “Fuel guache govea inaccurate reading and drops to empty when the tank is half full. Contacted the local Jeep dealer twice on having this part replaced and each time they tell me they will call me back but they have not.”

   NHTSA complaint #11399440, filed 2021-03, 180,000 miles
4. 4
   Air bags

   Air bag warning light and horn stop working

   • 44 complaints (11%)
   • median 99,000 mi at 12.7 yrs old (11 state mileage)
   • 20 mention a crash, fire or injury
   • filed 1996–2019

   Complaints describe the air bag warning light coming on, often together with a non-working horn, after turning the steering wheel to full lock or hearing a snap in the column. Owners link this to the clockspring wiring and note that their VIN was not included in the related campaign. Some also report difficulty getting recall parts, with the part described as discontinued. Typically reported between about 70,000 and 165,000 miles, often after full-lock steering input.

   Recall 98V046000Recall 97V080000

   What to check: Turn the wheel to full lock with the engine running and confirm the horn works and no air bag light appears; ask whether recall 98V046000 was completed for this VIN.

   2 excerpts from owner complaints in NHTSA records

   “Bought a Jeep Wrangler and found two outstanding recalls #97v-808 and 974-194.the later one they found parts for . The airbag module they say the part is discontinued and they can't address the recall due to part unavailable. Mopar says there are parts available ??”

   NHTSA complaint #11063569, filed 2018-01, 139,728 miles

   “The consumer was having the same problems as recall#98v046000 regarding the clockspring; the horn failed. The dealership would not repair free of charge, because the VIN was not included in the recall. Please provide more information.”

   NHTSA complaint #10112941, filed 2005-02, 89,000 miles
5. 5
   Brakes

   Brake lines rusting through

   • 22 complaints (5%)
   • median 90,879 mi at 8.2 yrs old (10 state mileage)
   • 7 mention a crash, fire or injury
   • filed 1996–2015

   Owners describe the brake pedal going to the floor or brakes failing with no warning, with mechanics finding rusted-through hard brake lines, including the line running to the rear axle. Others report rear drum adjustment parts breaking or rear brakes locking on wet roads. Some complaints note that dealers could not reproduce the problem. Most reports fall between about 68,000 and 140,000 miles, several on wet or rainy roads.

   What to check: Have the hard brake lines along the frame inspected for rust and pitting, and check the brake fluid level and pedal feel before buying.

   2 excerpts from owner complaints in NHTSA records

   “While driving on route 93 in boston, ma on a rainy day at 6 am. I braked and swerved to avoid a car and the back brakes on 97 Jeep Wrangler locked and the back end came around and I it the zipper lane barrier. I ended up facing traffice in the wrong direction in the high speed lane.”

   NHTSA complaint #10088918, filed 2004-08, 139,000 miles

   “On a maintained dirt county road the brakes on my 1997 Jeep Wrangler failed to stop my car causing a rear end collision with another car.I could feel the pulsing of the ABS brakes but the car refused to slow down,it pulled me into the car infront of me.”

   NHTSA complaint #10055102, filed 2004-01, 97,000 miles

Buying note. Inspect the frame and brake lines closely before buying, since both rust-related problems are described as hard to see from outside, and check the exhaust manifold, fuel gauge and air bag warning light on a test drive. Ask for records of any recall work and manifold replacement.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.