Jaguar XJ8 fuel pump failure causing stalling and no start issue on Jaguar XJ8

Submitted by localgirl102 · Jun 23, 2025
Published by RepairPal

Problem overview

Some Jaguar XJ8 owners report experiencing stalling and no-start issues, often attributed to a failing fuel pump. These owners note that a malfunctioning fuel pump can cause insufficient pressure in the fuel system, leading to difficulties in starting the vehicle and unexpected stalling. Symptoms they report include the engine turning over without firing, issues with the key fob, and potential alarm system malfunctions. Additionally, some owners find that if the fuel pump is not functioning properly, the engine may not receive the necessary fuel for ignition. To diagnose these issues, testing for power at the fuel pump fuse and during ignition is recommended. In some cases, even after replacing the fuel pump relay, owners may encounter ongoing power or control issues, suggesting a more complex problem within the fuel system. Addressing these concerns promptly is essential for resolving the stalling and no-start problems.

8 people reported this problem
4 comments
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Jaguar XJ8 vehicles with this problem

Average mileage: 82,940 miles
(35,700 - 113,000)

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