I've been doing a lot of off-roading lately and want to ensure my Disco doesn't leave me stranded. I've been perusing the forums for years now and have become aware of many common Disco issues, and have had to do several of the relevant repairs.

That being said, I haven't heard much about our fuel pumps and starters regularly being a problem- anyone with experience in this topic? Do they normally fail suddenly or do they gradually fail, giving ample warning signs prior to eventual failure?

Mine are functioning properly and have given me no cause for concern just yet. I'm looking to get ahead of potential part failures and replace critical components that could leave me stranded, if failure occurs when I'm in the middle of nowhere.

 

Both generally fail suddenly but the fuel pumps happen Way north of 250,000 MI and the starters usually fail somewhere between 160 and 200.

 

My fuel pump went bad by 125k, but it was gradual. The main symptom was not turning over the engine on the first attempt.

 

I've had starters last 25-30 years on the Rover V8 and never really die, they just got weak or slow to start. OEM Fuel pumps lasted a pretty darn good time, but it all depends on the fuel used, if it sat long spells and got moisture inside the tank. The OEM fuel pump assemblies if the sending unit was good and just the pump died a GM Fuel Pump and sock dropped right in saving you from buying the entire housing.

I'd say biggest thing to die on a D2 would be the insulation on the OEM shuttle valve switches or the internal circuit inside the Wabco unit itself hence why SO many D2's are running around with the 3 Amigos. Engine wise I'd say the #1 failure point on a THOR/Bosch Motronics setup = the CPS. They all eventually go out and the only reliable units are the OEM Bosch branded ones. Anything else = pure garbage. The Bosch 130/150AMP Alternators are decent as are the Valeo 120AMP units