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AuthorTopic: 3.9 v8 Discovery wont start....  (Read 17411 times)

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Offline LANDYTIM

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Re: 3.9 v8 Discovery wont start....
« Reply #30 on: November 01, 2008, 10:59:24 »
Tried everything stated and it still wont start!!!! HELP PLEASE!!
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Offline Disco_Stu

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Re: 3.9 v8 Discovery wont start....
« Reply #31 on: November 01, 2008, 11:36:00 »
It sounds like the air flow meter could be at fault - try and get one from a motor factor or scrapper and see if it works.

I had a 3.9 Rangie and it just died one day on the motorway. No warning, no build up. It then wouldnt start. It turned out to be a little module on the side of the dizzy, cost about £10 to replace - could be that. Unfortunately I dont know what it was called, I was doing exams that day and left it at a mates garage. By the time I finished and came back it was fixed so the above is what he said caused the fault.

Stu.
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Offline LANDYTIM

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Re: 3.9 v8 Discovery wont start....
« Reply #32 on: November 01, 2008, 12:09:21 »


Just spoke to a Land Rover breakers and they want £70 for an airflow meter. Expensive fault finding!!
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Offline Disco_Stu

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Re: 3.9 v8 Discovery wont start....
« Reply #33 on: November 01, 2008, 12:43:13 »
too expensive. Got anybody in your neghborhood who you can go and beg to loan theirs? Kindness of strangers and all that...
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Offline LANDYTIM

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Re: 3.9 v8 Discovery wont start....
« Reply #34 on: November 01, 2008, 13:01:40 »
We have ruled out the Air Flow Meter as we had it running without it on before the problem. So im thinking Dizzy??
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Offline LANDYTIM

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Re: 3.9 v8 Discovery wont start....
« Reply #35 on: November 07, 2008, 17:51:39 »
COULD THIS PROBLEM BE CAUSED BY THE IMOBILISER SPIDER??
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Offline nigel purnell

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Re: 3.9 v8 Discovery wont start....
« Reply #36 on: November 07, 2008, 20:34:12 »
The thing on the side of the Dizzy is an amplifier and costs a lot. Mine overheated on a trial section and the engine would not start similar probs to yours. i changed it with a remote unit from land rover as this is a frequent problem. To change it you need to take out the dizzy,becarful with rotor arm they sometimes break on the shaft bit  best to fit new one anyway.  Ive changed nearly ever electrical unit on my v8 including re chipping the ecu .  Nigel 
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Offline LANDYTIM

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Re: 3.9 v8 Discovery wont start....
« Reply #37 on: November 12, 2008, 21:32:38 »
She is running!!! had her all timed up and sorted all HT leads and checked them and she is running better than before, needless to say it was all wrong!!
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Offline mr_disco

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Re: 3.9 v8 Discovery wont start....
« Reply #38 on: November 13, 2008, 11:15:00 »
hi landytim

if you have had a look at the distributer cap,, hav u adjusted or moved it at all if so that can cause the rough ride and back firing,,

start the jeep and leave it tick over then losen the distributer and just slightly adjust it.. u will hear you engine get better or worse but will get there in the end it might my 180 degress out see m8

just a idea :-k
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