1986 Jaguar Xj problems

General information about Jaguar-Xj
Overview of popular issues
Analysis of common problems
Сomplaints list

The Jaguar XJ is a series of mid-size/full-size luxury cars produced by British automobile manufacturer Jaguar Cars (becoming Jaguar Land Rover in 2013) from 1968 to 2019. It was produced across five basic platform generations (debuting in 1968, 1986, 1994, 2003, and 2009) with various updated derivatives of each. From 1970, it was Jaguar's flagship four-door model. The original model was the last Jaguar saloon to have been designed under the leadership of Sir William Lyons, the company's founder, and the model has been featured in countless media and high-profile appearances.

Series 1, 2, and 3 (1968–1992)

Overview

The first generation Jaguar XJ was produced for a total period of 24 years, with two major facelifts – in 1973 and in 1979, with a raised front bumper and less tall grilles.

For four years, the 1968 introduced XJ was always a four-door, straight-six saloon on a 2.76 m (108.75 in) wheelbase. In 1972, a more spacious, 4-inch (10 cm) longer wheelbase (LWB) option, and a 5.3 litre V12 engine were added. On the XJ series II (from 1973), the standard wheelbase (SWB) saloons were cancelled in 1974 – but a SWB two-door (series II only) coupé was sold from 1975–1978.

The 1979 series III saloons received a redesigned greenhouse (upper body) and bumpers. The 6-cylinder series III models were replaced by the second generation Jaguar XJ in 1987, but the V12 models not until 1992.

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Common 1986 Jaguar Xj problems

The 1986 Jaguar XJ6, a luxury vehicle with a 4.2 liter in line 6 cylinder engine, is known for several common problems based on complaints from its owners. Here are the detailed issues:

Air Conditioner Failure: The air conditioner is a significant concern for 1986 Jaguar XJ6 owners. It has been reported that the air conditioner went out and had to be reconditioned. This issue can make driving in hot weather uncomfortable and may require expensive repairs.

Muffler Replacement: The muffler of the 1986 Jaguar XJ6 is prone to failure, and owners have reported that it went and had to be replaced. This problem can lead to increased noise levels and decreased performance.

Sporadic Cruise Control: The cruise control system of the 1986 Jaguar XJ6 has been reported to work sporadically, which can be inconvenient and potentially dangerous while driving.

Broken Rear Gas Cap Lock: The rear gas cap lock of the 1986 Jaguar XJ6 has been reported to break, which can lead to security concerns and potential fuel leaks.

Faulty Passenger Side Door Lock: The passenger side door lock of the 1986 Jaguar XJ6 has been reported to work sporadically, which can be inconvenient and potentially dangerous in case of an emergency.

Rusting Frame: The frame of the 1986 Jaguar XJ6 is prone to rusting, which can lead to structural integrity issues and potentially dangerous driving conditions.

Dry Rotten Hoses: The hoses of the 1986 Jaguar XJ6 are prone to dry rot, which can lead to coolant leaks and potentially catastrophic engine failure.

Electrical Short Circuits: The electrical system of the 1986 Jaguar XJ6 is prone to short circuits, which can lead to power steering issues and potentially dangerous driving conditions.

Leaking Brake Pipes: The brake pipes of the 1986 Jaguar XJ6 are prone to leaking, which can lead to decreased braking performance and potentially dangerous driving conditions.

Ignition Coil Failure: The ignition coils of the 1986 Jaguar XJ6 are prone to failure, which can lead to engine misfires and potentially decreased performance.

Coolant Reservoir Wear: The coolant reservoir of the 1986 Jaguar XJ6 is prone to rapid wear, which can lead to engine overheating and potentially catastrophic engine failure.

Hydraulic Fluid Issues: The hydraulic system of the 1986 Jaguar XJ6 is prone to issues, which can lead to window operation problems and potentially dangerous driving conditions.

Leaking Engine Oil Pan Gasket: The engine oil pan gasket of the 1986 Jaguar XJ6 is prone to leaking, which can lead to engine damage and potentially decreased performance.

Reliability Issues: The 1986 Jaguar XJ6 is infamous for its reliability issues, which can lead to expensive repairs and potentially dangerous driving conditions.

What problems did the Jaguar XJ have?

Water pumps on 5.0 V8 and 3.0 Supercharged XJ models are prone to failure, sometimes they can fail in less than 20,000 miles. This is because coolant gets inside the bearing housing corroding the water pump bearing.

What are the common problems with a 1986 Jaguar XJ6?

When did Jaguar XJ get Aluminium body?

2002 Jaguar XJ8 (X350) Polished Aluminium Saloon

The X350 went on general sale in April 2003. The X350, so-called after its project code number, was introduced to the public at the motor shows in the autumn of 2002 and was the seventh generation of the Jaguar XJ saloon.

Is the Jaguar XJ diesel a reliable?

The XJ finished top in the luxury car class in our most recent reliability survey, with an excellent overall score of 94.3%.

1986 Jaguar Xj car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Jaguar Xj problems, we found that the most common problems with these 2023 model year vehicles are:

Power train problems

The graph below shows statistics for all 1986 Jaguar Xj vehicle components and the number of complaints received.

1986 Jaguar Xj complaints

The NHTSA has received 1 complaints about various vehicle components related to the 1986 Jaguar Xj.

2008-10-17

POWER TRAIN PROBLEM

Date Of Incident: 2008-10-17
Components: POWER TRAIN
Summary: MY 1986 JAGUAR XJ HAS BEEN HAVING TRANSMISSION ISSUES FOR A WEEK AND FINALLY HAS REFUSED TO ENGAGE THE GEARS. IT IS BASICALLY STUCK IN IDLE MODE AND NOT MOVING. THE SITES I READ SAID TO REPORT THESE ISSUES TO THIS SITE. I PLAN TO HAVE AN AUTHORIZED DEALER LOOK AT THE PROBLEM FOR OTHER SOURCES OF TROUBLE. *TR

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Additional sources

More sources of information about 1986 Jaguar Xj problems:

1986 Jaguar XJ6 Reviews - Carsurvey.org

http://www.carsurvey.org/reviews/jaguar/xj6/1986/

Faults: Left cam cover gasket failed (due to age), exhaust transition gasket failed (due to age), voltage regulator failed (a common weakness in these cars) ...

What would you pay for this 1986 Jaguar XJ6 Vanden Plas. Issues ...

https://www.reddit.com/r/classiccars/comments/tqe8pl/what_would_you_pay_for_this_1986_jaguar_xj6/

Mar 28, 2022 ... $1800 to $2000. Swap in a SBC 350 or LS engine. Installation kits are available from Jags That Run (JTR).

The "most common" problems? - Jaguar Forums - Jaguar ...

https://www.jaguarforums.com/forum/xj-xj6-xjr6-x300-26/most-common-problems-46769/

Dec 9, 2010 ... The "most common" problems? · 1 Cracks in exhaust manifold · 2 Faint LCD clock display segments · 3 Leaking automatic dimming rear view mirror – ...

Considering buying a 1986 Jaguar XJS, looking for resources and ...

https://www.reddit.com/r/MechanicAdvice/comments/2s7rm7/considering_buying_a_1986_jaguar_xjs_looking_for/

Jan 12, 2015 ... Are there any problems common to this car that I should look out for when I go to check it out? Are there any good resources for 86 xjs that ...