1991 Jaguar Xjs problems

Common 1991 Jaguar Xjs problems

The 1991 Jaguar XJS is a classic vehicle that has been known for its grand touring capabilities, presence, and performance.

Intermittent Starting Problems

One of the most common problems with the 1991 Jaguar XJS is intermittent starting issues. This problem can be caused by various factors, including a deficient fuel regulator, a malfunctioning ignition system, or issues with the crankshaft or flywheel position sensors.

For instance, one owner reported that their 1991 XJS intermittently did not start, and after going through the entire ignition system, they discovered that the fuel regulator was the culprit. The regulator had started leaking fuel, which caused the starting issues. This owner also recommended bridging the fuel pump relay to ensure the pump would run continuously during diagnosis.

Another possible cause of intermittent starting issues in the 1991 Jaguar XJS is a failing crankshaft or flywheel position sensor. These sensors provide vital information to the ignition and fuel injection computers, and if they fail, they can cause starting problems. Replacing these sensors with new ones can solve the issue, as they are relatively easy to remove and replace, and are less than $100 each if you shop around.

Engine Overheating

Another common problem with the 1991 Jaguar XJS is engine overheating. This issue can be caused by a blown or cracked head gasket, which allows coolant to mix with the engine oil. If ignored, this problem can lead to severe engine damage, including a possible engine fire caused by the hot catalytic converter filling with combustible air.

To diagnose and fix this issue, you'll need to remove the head and install a new one. This is a challenging job, but it's necessary to prevent further engine damage. Additionally, if you notice that your coolant has turned brown, it's a sign that your coolant needs flushing and replacing immediately to prevent a blown head gasket.

In some cases, engine overheating in the 1991 Jaguar XJS can be caused by a blocked air conditioning drain, which results in the front carpets getting wet. This issue can be resolved by unblocking the air conditioning drain and drying out the carpets to prevent dampness from setting in.

In conclusion, the 1991 Jaguar XJS is a classic vehicle with its fair share of common problems. Intermittent starting issues and engine overheating are two of the most reported problems by owners. By addressing these issues promptly, you can prevent further damage to your vehicle and ensure its longevity.

1991 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:

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

The graph below shows statistics for all 1991 Jaguar Xjs vehicle components and the number of complaints received.