After getting the truck really wet off-roading (might not be related given the trucks miles), i have been experiencing power loss once the the engine heats up. Excessive fan noise (new fan and fan clutch, new radiator, new water pump, no coolant temp issues) and having difficulty maintaining speed on the highway, especially up hills. I wasn't able to hold 70-75mph on a slight grade. No codes. My recent thought is the fuel pump and filter. The filter is easy, i am going to to that first. what are the signs of a failing fuel pump? what is the service life on it? I am looking to do some long drives this summer with family and looking for what could go wrong ahead of time. Injectors are probably original, send those out for rebuild?
220,000 miles Disco 2 power loss
- Thread starter GrantWinston
- Start date
Petrol or diesel? In my experience (petrol), fuel pumps don't get weak, they run perfectly, until they quit. On the petrol D2, I don't think there's an external fuel filter (someone please correct me if I'm wrong).
How does it run when it's down on power? You say no codes, but is it stumbling or just not revving?
Check your short and long term fuel trims if you suspect a fueling issue. If they're not getting pegged trying to feed more fuel, then fueling is not the root of the issue.
Have you looked at simple things like the air filter? Are you sure there's no mouse nest in your intake tube?
Check your short and long term fuel trims if you suspect a fueling issue. If they're not getting pegged trying to feed more fuel, then fueling is not the root of the issue.
Have you looked at simple things like the air filter? Are you sure there's no mouse nest in your intake tube?
It would also be helpful to know what modifications your vehicle has. Tire size, gearing, and other deviations from stock equipment can affect performance. I consider the fuel pump unlikely. A faulty pump or wiring harness would manifest itself by stumbling and dying engine. I replaced a couple pumps on my truck before figuring out the wiring harness was the culprit. At no time during that mystery did my truck lose power - it either ran or it didn't. In any event, the fuel pump is accessible enough that it's easy to check with a multimeter. Plus you can check fuel pressure at the rail.
Expound on what "getting the truck really wet" involved. Submerged in water above the hood? Splashing through a puddle? What exactly got wet, and how?
Expound on what "getting the truck really wet" involved. Submerged in water above the hood? Splashing through a puddle? What exactly got wet, and how?
Have done a compression test ,this would reveal any issues with the piston rings?
Make sure check to out the spark plugs to assure their condition as you pull them for the test procedure. I have had issues with the actual plug wires and or coil (s)
Finally, I have had this issue with a D-1 that had issues with the crank sensor, and make sure the sensor wiring harness is not the issue, may not be the actual sensor
Make sure check to out the spark plugs to assure their condition as you pull them for the test procedure. I have had issues with the actual plug wires and or coil (s)
Finally, I have had this issue with a D-1 that had issues with the crank sensor, and make sure the sensor wiring harness is not the issue, may not be the actual sensor