Grand Cherokee 4.0 dead?

[McClure]

My 4.0 1999 GC has a flat battery so I tried jumping it this morning. This set the hazards & alarm off but there was no life in the dash electrics etc and there was no response to turning the key. Does anyone know the problem and solution please?

Thanks

[scdan4]

Are you sure you had a good connection on the jump leads. Doesn't sound like it was getting enough electricity through for starters.

If there was a good enough connection - immobiliser?

[McClure]

Yeah, connection was fine. Could be the immobiliser - how do I get around that?

[Fleckers]

is the battery 100% flat ?

if so then you may not be able to jump it

In the past when in situations like that I have disconnected the poss side of the battery.

then connected neg side of battery to jumper car
then connected poss side of jumper car direct to the poss lead that I had just disconnected from the battery and the car fired up.

not saying it will work and not cause issues etc but it worked for me

[jay140285]

sounds like battery, they need a bloody good battery on them.

Is yours a ZJ or WJ?

[McClure]

Thanks chaps. I've replaced the battery and it's going again.

It's the WJ and is 4.7 not 4.0.

Next issue is no air is circulating through the heating system - any ideas?!

[TooMany2cvs]

McClure said:

Could be the immobiliser - how do I get around that?

As simple as lock it and unlock it, usually.

[scrwright]

McClure said:

Next issue is no air is circulating through the heating system - any ideas?!

blend doors fubar, easy enough fix.

For WJ jeep stuff look here, very usefull

http://www.wjjeeps.com

Edited by scrwright on Tuesday 3rd February 16:48

[McClure]

scrwright said:

blend doors fubar, easy enough fix.

For WJ jeep stuff look here, very usefull

http://www.wjjeeps.com

Edited by scrwright on Tuesday 3rd February 16:48

That's a fantastic site, thanks. I think I'll be spending a lot of time on there!

[pcn1]

McClure said:

scrwright said:

blend doors fubar, easy enough fix.

For WJ jeep stuff look here, very usefull

http://www.wjjeeps.com

Edited by scrwright on Tuesday 3rd February 16:48

That's a fantastic site, thanks. I think I'll be spending a lot of time on there!

I get lots of help over there too.

Search Jeep WJ blend doors on E-bay. You'll find the repair kits there. They seem to have come down in price as well, I paid near a £100 2 years ago.