Post by: skillie on February 09, 2009, 04:55:42 PM
its a 99 Jeep Grand Cherokee Laredo 2.5TD Manual transmission.
Hes had it a few years and its good mechanically but its been laid up a few months as it won't start. His details are sketchy on this but he reckons it gave trouble after jump starting a car one time. It started refusing to disengage the immobiliser; he then took out the battery to let it sit and after a period of time the alarm started to sound. he seached frantically for the power pack for the alarm but never found it (any ideas where it is?).
Long story short he's never gotten the prob sorted since, anyone know if it is common, if it can be fixed and how? can he just bypass the immobiliser and if so how/ where is it?!
Any help appreciated, if you guys bail me out i'll be joining the Jeep owner ranks with this fine machine
Post by: tim_aka_tim on February 09, 2009, 05:05:35 PM
The vehicle isn't a 99. It's probably a 98 which was registered in 99. Model year is very important on American vehicles. Registration year is irrelevant.
In 1999, the Grand Cherokee WJ was introduced, the diesel engine was a 3.1 auto.
Post by: skillie on February 09, 2009, 05:25:20 PM
Post by: tim_aka_tim on February 09, 2009, 05:28:56 PM
Post by: scrw on February 09, 2009, 06:30:29 PM
Quote from: "tim_aka_tim"
Lol. Ask Bishops finger about ZG immobilisers.
:rotflmao:
Post by: Bishops Finger on February 09, 2009, 10:23:13 PM
1/For a start make sure the batteries in the fob are Ok..
2/ Then as the Doc advised check the alarm siren system which is situated some where inside the drivers side inner wing
3/ Check out the BCM (Body control module ) which is inside the drivers side footwell (right side of accelerator pedal)
4/ TRy the passenger door control module which is I guess err in the drivers side passenger door..
For 2/3/4 if you don't feel comfortable doing the work take GC to a very competant auto electrician/Jeep specialist
For 3/4 said modules can be optained from clued in breakers...heard of one in Hairyfoot tho that seems a contradiction CJD or summat..
At no fucking point send said GC to Westbury in shrewsbury coz they couldn't wipe ther arses with a GC service manual if they were given instructions and you'll be bankrupted with phone bills asking them how the repairs going coz the brainless shits concepts of customer service is on a par with Jade Goodys latest hair care range
HTH Good luck
Stew
Post by: tartanzj on February 10, 2009, 03:41:21 PM
Quote from: "skillie"
.....His details are sketchy on this but he reckons it gave trouble after jump starting a car one time. It started refusing to disengage the immobiliser.....
Have heard of a similar thing happening before with a suzuki. Jump starting another vehicle can apparently cause a voltage spike to damaged the ecu of the car that is doing the jump start. The suzuki then refused to start again. Initially I was sceptical but I'm now hearing more of the same happening so I avoid giving anyone a jump start, if I do I disconnect my battery first. Remedy for the zuk was replacing the ecu.
Post by: skillie on February 10, 2009, 08:17:12 PM
Post by: skillie on February 13, 2009, 01:22:30 PM
Post by: skillie on February 16, 2009, 01:48:47 PM