1990 Jaguar Xjs problems

Common 1990 Jaguar Xjs problems

The Jaguar XJS, produced from 1975 to 1996, was a mass-produced V-12 sports car that faced several common problems. These issues, combined with the car's complex production process, have contributed to its relatively low market value compared to other Jaguar models.

• Marelli Failure: The most significant issue faced by Jaguar XJS owners is the Marelli failure, which results in a complete loss of power. This problem occurs due to the failure of the rotor in the ignition system, causing the engine to lose its spark and the catalytic converter to overheat. If ignored, this issue can lead to a car fire. To solve this problem, the cap and rotor must be replaced with new ones.

• Suspension Issues: The twin-wishbone front suspension top inner bushes on the XJS need to be replaced every 50,000 miles. This is a frustrating job that requires removing the worn bushes, but it is not a complex DIY fix. Ordering new bushes from the parts list and setting aside time to remove the worn ones can help resolve this issue.

• Brake System: The braking system on the XJS is known for its stability, but a loss of brake power is usually a simple case of worn-out brake pads or discs. These parts are easily available in the BreakerYard online store, making it a simple fix.

• Gearbox Mount: A knocking sound coming from the automatic gearbox can be caused by a loose gearbox mount on the XJS. Tightening the bolts can easily resolve this problem.

• Overheating Engine: Overheating engine issues in the XJS are often caused by a blown or cracked head gasket. Removing the head and installing a new one can help solve this problem. This is a challenging task, but new heads are always in stock for easy ordering.

• Timing Chain: The timing chain on the XJS is very durable, but it will eventually stretch or develop a crack. Fitting a new timing chain is quite challenging on all Jags, but it can be ordered from the parts list for quick delivery.

• Coolant Replacement: The coolant in the XJS needs to be flushed and replaced every two years. If the coolant has turned brown, it needs replacing immediately before it leads to a blown head gasket.

• Air Conditioning Drain: The air conditioning drain can get blocked, resulting in the front carpets getting wet. Unblocking the air conditioning drain and drying out the carpets can help solve this issue.

• Door Mirror Leaks: Water can leak in through the door mirror, causing damage to the door panel. Sealing around the door mirror with something like silicone sealer can help stop the leak. If the door panel is damaged, it will need to be replaced.

• Electrical Problems: The wires all over the V12 in the XJS resemble spaghetti and are bound to give electrical problems due to the direct heat it gets from the enormous block. A systematic assembly of the harness is not offered, which contributes to these issues.

• Rusting and Corrosion: Like other cars of the 70s and 80s, the Jaguar XJ-S is prone to rust and corrosion. Some prominent rusting parts are the lower front wing section, around the windscreens, and the taillights. Repairing and removing the rust can cost a small fortune.

• Engine Overheating: Engine overheating is a common problem in the XJ-S, which can lead to water leaks and corrosions.

• Knocking from the Gearbox: Knocking from the gearbox is another common issue faced by XJS owners, which can be caused by a loose gearbox mount.

• Power Loss: Power loss is a significant issue faced by XJS owners, which can be caused by various factors, including engine overheating, water leaks, and electrical problems.

In summary, the Jaguar XJS faces several common problems, including Marelli failure, suspension issues, brake system problems, gearbox mount issues, overheating engine, timing chain problems, coolant replacement, air conditioning drain blockage, door mirror leaks, electrical problems, rusting and corrosion, engine overheating, knocking from the gearbox, and power loss. These issues have contributed to the car's relatively low market value compared to other Jaguar models.

What are the problems with Jaguar XJ-S?

The engine is divided into two banks, separated by the ignition system. The rotor is prone to breakage, and the result is that your engine won't get a spark, and your catalytic converter will get hot while being filled with combustible air. If ignored, the catalytic converter will set the car on fire.

Why are Jaguar XJ-S so cheap?

The Jaguar XJ-S was built from 1975-96 and was the most affordable mass-produced V-12 sports car ever built. But owners constantly balanced enjoyment and aggravation, which has depressed prices to bargain levels. Stiffer emissions and safety regulations demanded a new kind of Jaguar sports car in the 1970s.

Are Jaguar XJ-S good cars?

The Jaguar XJS is the direct successor to the legendary E-type Jaguar – a car that is considered by many as one of the prettiest and most well-behaved vehicles of its era. Yes, in some instances its looks and performance may be overhyped, but there is no denying that it was a special vehicle.

How much is a 1990 XJS worth?

The value of a used 1990 Jaguar XJ-Series ranges from $1,899 to $13,368, based on vehicle condition, mileage, and options.

1990 Jaguar Xjs car problems categorized by type of issue

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

• Service brakes problems
• Fuel system problems
• Gasoline problems
• Hydraulic problems
• Electrical system problems

The graph below shows statistics for all 1990 Jaguar Xjs vehicle components and the number of complaints received.