Jeep Pump Repairs

The key indications of a faulty high-pressure Jeep fuel pump are:

• sporadic loss of power
• no response when accelerating
• a surging engine
• loss of power when driving uphill or towing a load
• the engine fails to start.

It may also indicate a Jeep fuel supply problem if your engine stalls at high temperatures or you notice a significant increase in fuel consumption.

Diesel fuel pumps operate under high pressure. This applies particularly to the direct injection fuel pumps in the latest generation Jeep models.

As a result, leaks and malfunctions due to blockages are fairly common.

Factors that can contribute to wear on the fuel pump include:

• irregular oil changes or use of the wrong type of oil – this can increase wear on the camshaft and affect pump performance
• imperfect alignment of pump pressures, camshaft position, pressure solenoid position and injector pulses.

Whether you drive a Jeep Wrangler YJ, TJ or JK or Grand Cherokee, your vehicle’s fuel supply depends on a complex, sensitive system – one with multiple components that work together under high pressure.

However, there are differences between the models.

For example, the iconic Wrangler Jeep YJ has a mechanical carburated fuel flow system.

The existing fuel injection system was introduced in the Jeep TJ, and later modified to include larger fuel injectors and a re-designed intake manifold, throttle body and cam profile.

The current model, the Jeep Wrangler JK, has a cylinder deactivation feature. It shuts down two engine cylinders at cruising speed to improve fuel efficiency.

The age and condition of your Jeep’s fuel pump will determine whether a refurbishment or replacement is the best solution.

Thorough diagnostic testing enables our technicians to give the best advice.

In most cases, Jeep fuel pump refurbishing is a suitable course of action. It’s a lot cheaper than buying a new pump, while still restoring performance to optimum levels.