Thread: Disco 2 V8 won't rev past 2,500

Hi All.

I went out 4WDriving with a mate yesterday and we came across a relatively shallow mud hole - only about 30cm at the deepest point. My mate with a Pajero tried going through slowly but got bogged halfway through. After snatching him out, he went through with quite a bit of power on and just made it through to the other side. So when my turn came, I went through with a fair amount of power on as well. When I got through to the other side, the car stalled and a whole heap of steam poured out from under the car. I started it and began driving but the Disco had no power.

I popped the bonnet and water dripped was dripping from under the bonnet and water was bubbling from around the spark plugs. There was water in the manifold valley. So my immediate assumption was that I drowned some of the electrics and when it all dries, I should be OK.

The engine idled perfectly, but when a little bit of accelerator was applied, it would slowly rev to around 2,500 but would die after that. It would also die if I pressed the accelerator more than a few millimeters. I let the engine run for about 15 minutes hoping that everything would dry up, but no luck. After letting the motor cool down, I removed the leads from all the spark plugs and sprayed RP7 inside the leads, on the spark plugs and on the coil packs. Unfortunately, this didn't help at all and the car drove like it was in limp mode. On the flat, I managed to get to 50kph, up hills it would manage no more than 20kph and downhill I could get 80kph or more.

I eventually got the vehicle home (very slowly) and left it overnight. I went out and started it this morning and it fired up fine - but when I gave it a little bit of accelerator, it just started to die and back fire when it went over 2,500 revs.

I am very new to 4WDriving and I have recently gone through water and also been stuck in water which was half way up the doors, but the Disco still drove OK afterwards. Obviously in this instance, the water just happened to splash all over the engine and the left side of the engine bay (the abs and power steering side) copped the most. There was even a little bit of water in the base of the air filter housing.

Could the water have damaged a sensor or any other piece of electronics, or should I just patiently wait a few days until everything has dried out properly?

Any advice would be gratefully appreciated.

Regards,

Peter

Originally Posted by Psimpson7

also check that the air inlet hose onto the throttle body hasn't come loose and isn't pulling away from the throttle body when you rev it.

Hi Psimpson7.

I will check that tomorrow.

Regards,

Peter