Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: Mik on January 23, 2008, 10:26:11 AM

Title: Dead XJ ??
Post by: Mik on January 23, 2008, 10:26:11 AM
I have a 97 (facelift) 4.0L limited in the shop with what I believe to be a security lock-out issue.
It is LPG converted and died whilst running normally this weekend. It was believed to be switched to petrol and run out but with a tank of fuel its not starting.
There is neither fuel pressure or a spark which is too much of a coincidence in my book. I believe the problem to be a background security immobiliser issue but the normal 'key in the passenger door thing
has had no effect.
Can anyone offer any further advise please ? Its clogging my workshop up.

Ta

Mik
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Post by: Dave69 on January 23, 2008, 05:51:41 PM
do you know the type of imobiliser then contact the manufacturer for additional details.

I'll give you two pork pies and it'll be gone if that's more help
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Post by: greggmo on January 23, 2008, 07:09:35 PM
Mik dood. just push it outside for the night, i am sure some local chav will get it goin in no time :shock: does sound like an immobilizer problem.
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Post by: tag on January 23, 2008, 08:03:01 PM
Is the crank sensor ok? :roll:
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Post by: wazza on January 23, 2008, 08:18:47 PM
i seccond the crank sensor!!!
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Post by: Bubba on January 24, 2008, 03:19:58 PM
i believe it is the negative karma that your troubled mind is carrying around stopping it from starting
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Post by: Dave69 on January 24, 2008, 04:24:53 PM
i wouldn't have thought the crank sensor would kill the fuel presure just the firing of the sparks
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Post by: Mike Pavelin on January 24, 2008, 04:26:30 PM
It needs cam and crank signals to be present and synchronised to time injection and ignition correctly.
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Post by: Dave69 on January 24, 2008, 04:36:00 PM
that would stop it firing (to protect the engine) but would this kill the fuel pump near the tank ?
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Post by: Mike Pavelin on January 24, 2008, 05:13:12 PM
You get the initial 1 second or so of fuel pump when the ignition turns on, but then it won't run anymore till there's a health cam and crank signal.
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Post by: greggmo on January 24, 2008, 11:04:30 PM
have ya sorted it Mik dood?
Title: Re: Dead XJ ??
Post by: german guy on January 25, 2008, 07:01:32 AM
Quote from: "Mik"
I have a 97 (facelift) 4.0L limited in the shop with what I believe to be a security lock-out issue.
It is LPG converted and died whilst running normally this weekend. It was believed to be switched to petrol and run out but with a tank of fuel its not starting.
There is neither fuel pressure or a spark which is too much of a coincidence in my book. I believe the problem to be a background security immobiliser issue but the normal 'key in the passenger door thing
has had no effect.
Can anyone offer any further advise please ? Its clogging my workshop up.

Ta

Mik


check that the lpg system has i decend power supply as it is the master over the fuel system now
on my rangy i use to own a dodgy fuse which turnes out to be the main fuse for the lpg  which then turned out when that fuse ain`t good the engine ecu ain`t powering up  resulting in no spark no fuel and no go