bridge9

hi, i just spent 20 minutes writing a question then the goddamm internet crashes just as i hit submit and i lost my question....so here goes again.
i have a 1997 2.5 turbo diesel jeep the diesel injection pump is faulty. had it checked by 2 diesel specialists who say the pump is at fault. it sometimes cuts out when you take your foot off the gas, changing gear, slowing down ect ect.
i'm skint at the moment so i am fitting a second hand pump from another running engine. a mechanic friend is going to help me with it to save on cost but he has never done one on a cherokee before so he just asked me to find out if the injection pump is in any way effected by the immobilizer, as in will a pump from another engine run on mine with out any codes or mapping having to be changed??? or is there any tips on this job? or indeed anything i need to watch out for?
thanks in advance for any replys. noel

freegdr

i sent you a link in your PMs

Willys55

The injection control unit is not effected by the immobilizer. The immobilizer only cuts power to the pump, it will not effect pump timing in the least.

roboman

Hi ****** do you know how or in what way the immobiliser cuts power to the diesel pump, my rke unit is up the shoot and cant find a replacement over here in Spain, i still have power to the fuel cut off solenoid but the engine stops after a couple of seconds, poss the quantity device in the edc fuel pump?

bridge9

thanks freegdr got the PM. by the way i love your jeep!
thanks willys55 thats all i need to know!!

bigbug86

HI
I have a 86 Winnebago Lesharo with a bad engine, 85 -90?? J8s 2.1 Turbo Diesel, I understand that a 2.5 is similar just newer, I'm trying to locate one if you of any one please let me know!! Also do you know if they are interchangeable with out a lot of modification?? I would really appreciate if you could send me some pic's of the engine, from the side so I can see the motor mounts and just how it looks. I have been rely having a hard time finding a engine, I'm desperate to find some thing that will fit with out doing a lot of modification.
surfingnow08@yahoo.com
Thanks Walt

ditchus

Could you PM me please as I have the same issue that this reply was to, would really appreciate it.

I have been told that the Fuel Injector pump on me cherokee is knackered and that a replacement one would need chipping, is that right or is there a way round it?

Any help greatly appreciated, oh yeah my car:

It is a UK 2.5TD Cherokee XJ ORVIS 2000 model.

Thanks again

bridge9

hi ditchus, don't know if this reply is too late as i was away. the pump i fitted went into my 97 jeep no probs. no messing with chiping or any electronics. little tricky to fit the replacement without disturbing the timing but we did it! the second hand pump i got was 150 euros. the jeep ran a bit rough for about 10 minutes then after a drive it cleared up and is running perfect, no more cutout!!!!!. hope this helps. and thanks again every one for their help.