1997 Disco cuts out going up hills (4x4)

[DTower]

My 97 Discovery 4.0L cuts power going up steep hills,RPM won't go past 1200rpm. I can turn around and back up the same hill , No problems. I changed the fuel filter and fuel psi at the rail is 35psi. Anyone had these problems?

[scorpiostu]

My 97 Discovery 4.0L cuts power going up steep hills,RPM won't go past 1200rpm. I can turn around and back up the same hill , No problems. I changed the fuel filter and fuel psi at the rail is 35psi. Anyone had these problems?

I had an old range rover that did that years ago. Went into 3 different garages and £400 later I eventually found out that the wire to the coil was broken and everytime I went up a steep hill the wires came apart and it cut out.

Simple fix. Hope that helps

[northuk]

Thats really weird on fuel injection, has the tank pick up been out and fitted in the wrong position,

[DTower]

no work has been done on the tank or fuel pump. I may pull the pump to see if there's an issue with pick up.

Thanks
DT

[octopus74]

Have you cleaned out the fuel sedimenter (if the V8s have these), sometimes these go 4 ages without being done. It really helped my 300TDI!

[northuk]

Another thought might be the fuel pressure regulator, maybe its under fueling and there could well be a filter between the tank and lift pump, really is worth a look before pulling her to bits.