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1999 Jeep Wrangler engine problems

51 complaints (24% of all complaints for this car). Typical mileage when it fails: 58,000. 2 crashes reported.

owner complaints
51
of this car's complaints
24%
typical mileage
58,000
crashes
2
recalls
0

Which part fails

  • Exhaust system: manifold/header/muffler/tail pipe
    34
  • Exhaust system
    6
  • Engine: gasoline
    3
  • Engine
    3
  • Cooling system: radiator assembly
    2

At what mileage

Complaints by mileage at the time of the problem.

0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+

Jeep Wrangler engine problems in other years

19901995200020052010201520202026

Specific symptoms reported on the 1999 Jeep Wrangler engine

Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.

Check engine light 8Knocking 6

Related recalls

No recalls on record for this model year.

What 1999 Jeep Wrangler owners say

Most recent owner complaints, unedited.

Filed Jul 24, 2015 · Acceleration, Engine · 146,000 miles · KS

Tl* the contact owns a 1999 jeep wrangler. While driving approximately 40 MPH, the speedometer failed and the engine warning indicators illuminated. The contact stated that this was a recurring failure. The vehicle was not taken in for diagnostic testing. The vehicle was not repaired. The manufacturer was not notified. The approximate failure mileage was 146,000.

Filed Oct 17, 2011 · Engine · PA · crash · 1 injury

1999 jeep wrangler. Consumer writes in regards to vehicle being a lemon *tgw the consumer stated she was told the vehicle was new. But, in fact it was defective and had to be repaired several times. The consumer was involved in an accident where she suffered a neck injury.

Filed Nov 13, 2008 · Engine · 75,000 miles · RI

Exhaust manifold failure.

Filed Dec 22, 2007 · Engine · 70,000 miles · RI

Radiator made with plastic which leaks at the top where the plastic is crimped to the metal core. This is an inevitable problem on all jeep (chrysler products) made with radiators manufactured using plastic causing leakage before the life expectancy of the radiator is reached. In some cases, coolant is flammable. To my knowledge no recall has been performed.

Filed May 7, 2007 · Engine · 79,436 miles · GA

Cracked manifold.

Filed Aug 26, 2006 · Engine · 68,025 miles · MO

I have had the exhaust manifold fail in my 99 tj twice now. The factory original cracked at about 39,000 miles and the "new and improved" oem replacement lasted 11 months (or 9,450 miles). This is getting very expensive...

Filed Jul 12, 2006 · Engine · AR

Dt*: the contact stated the vehicle accelerated on its own. It would accelerate at anytime, whether it was in idle or in motion. The vehicle has been observed by the dealer however they have not been able to correct the problem. This incident occurred about 8 times on average a day.

Filed Nov 16, 2005 · Engine · 68,000 miles · CA

Found crack in exhaust manifold between the #1 and #2 ports at around 68,000 miles, after discussing this problem with a number of other jeep owners I learned this is a common problem with the 1999 and other years back. My complaint is, if daimler chrysler is aware of this problem and I am sure they are, why aren't they addressing it. Unhappy with dealer and stock manifold, replaced with after market exhaust manifold header.

Filed Aug 4, 2005 · Engine · 69,800 miles · TX

I took my jeep to chuck nash jeep because of a popping sound. They said the exhaust mainfold was cracked, and told me it would be $750.00 to replace, I refused the repair, they charged me $75.00 for the evaluation.

Filed Mar 23, 2005 · Engine · 53,300 miles · CO

Heard excessive noise coming from engine. Investigation revealed that the exhaust header was cracked at the exhaust flange connecting the crossover pipe to the manifold.

Questions about the 1999 Jeep Wrangler engine

Does the 1999 Jeep Wrangler have engine problems?

Owners have filed 51 complaints about the engine of the 1999 Jeep Wrangler, 24% of all its complaints.

At what mileage do 1999 Jeep Wrangler engine problems start?

The typical (median) mileage in owner complaints is 58,000 miles.

Was there a recall on the 1999 Jeep Wrangler engine?

There is no recall for this problem on this model year.

What year does the Jeep Wrangler have bad engine?

The Jeep Wrangler model years with the most engine complaints are 2024 (420 complaints), 2014 (330 complaints) and 2021 (227 complaints).

Other 1999 Jeep Wrangler problems

Electrical 53Airbags 22Body 21Transmission 20Brakes 14Visibility 13Seat belts 7Acceleration 6Fuel system 6Lights 6Suspension 5Tires 5Steering 3Locks 2Wheels 2

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