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  #1  
Old 20th-January-2009, 22:10
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Join Date: Jan 2009
Location: Plymouth, Devon
Posts: 107
Thumbs up P38 v8 no spark but engine turns.

Hi one and all

I have read quite a bit on this site in the last week or so and i like it a lot.

I decided to treat myself to a Range rover 4.6 and found one that ticked most of the boxes, i have only had it since the beginning of December, it's a late 99 on a V plate, 4.6 with multi point lpg in dark green, it is so nice to drive and feels a mile away from my 95 Disco v8 3.9 lpg.

I did look into possible faults before i bought it, bad blocks, air suspension, airbags etc, but i love it or did until Friday.

I didn't use the car on Thursday, went to go out on Friday and it wouldn't start, the battery is a little suspect, but it turned over OK, i put my jump battery on as well but still wouldn't fire.

I then went through my DVD i bought and it said for not starting check start relay, well not much use that is then.

I next checked for a spark, ahhh found the problem w've run out of them, back to DVD and this site, crankshaft position sensor, right i will order one, it came today, i tested the ressistance of the old unit and the new one and they were the same , so fitted the new one and it started went in to have me dinner, came out to drive into town and the f****r wont start, no spark again, i have checked the fuses and relays and all looking very clean.

There are no fault messages on the dash like alarm/immobiliser, battery, alternator, only the airbag fault message that was there when i bought it.

Has any one else had this problem on the v8, i know there are postings on here for the diesel and others that the engine won't even spin over, but that's all i have been able to find.

Any help, ideas would be very much appreaciated, many thanks in advance.

Ian
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  #2  
Old 20th-January-2009, 22:28
al-one-arm's Avatar
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Join Date: Jul 2008
Location: burnham-on-sea,somerset
Posts: 248
Default Re: P38 v8 no spark but engine turns.

i dont know where the crank position sensor is, but could you have touched any other wires around it, or have you checked its wires and connector? also , is the switch set to petrol not gas?
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  #3  
Old 20th-January-2009, 22:36
gavbriggs's Avatar
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Join Date: Sep 2008
Location: Sheffield uk
Posts: 5,814
Default Re: P38 v8 no spark but engine turns.

unplug as many plugs as you can find and check for corrosion, clean and replace.

also check yr in N or P otherwise it wont start. i believe the CPS is on the front of the engine? cant remember without the rave cd(The Green Oval - Downloads | Land Rover Data cd2 if you dont have it) there are plugs on the top of the engine, front, attached to the plenum. i removed one or both of these at one point and it wouldn't start but would turn over. also i have tried starting in drive and that did the same. if you have yr eka code and all the plugs are in tact and clean, take the earth lead off the battery and leave for half an hour then try to start it. ONLY DO THIS IF YOU HAVE THE EKA CODE AS YOUR ENGINE WILL BE DISABLED!!

also check your gas system is switch to petrol only as this could be causing the problem or maybe as said above a wire is loose
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Old 20th-January-2009, 22:46
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Join Date: Jan 2009
Location: Plymouth, Devon
Posts: 107
Default Re: P38 v8 no spark but engine turns.

Hi Al-one
The sensor is positioned at the rear left hand side of the engine by the sump, behind the cat, there aren't any wires other wires there, but i did check the plug again, i did try with the lpg switch in petrol only, it is a auto change over system, you can only have it on auto or petrol only.

this is one thing i didn't like about the lpg system, in my Disco a tank of petrol lasted me 12000 mls, left it on gas only.

Thanks
Ian
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  #5  
Old 20th-January-2009, 22:54
eightinavee's Avatar
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Join Date: Jan 2006
Location: Near Bath,SW UK.
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Default Re: P38 v8 no spark but engine turns.

Getting bored with the same question - the answer is its lost its security link between the engine ecu and the BECM.
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Old 20th-January-2009, 23:05
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Location: Plymouth, Devon
Posts: 107
Default Re: P38 v8 no spark but engine turns.

Hi Gavin
I will go right through the plugs and sockets tomorrow, everything looks very clean as i don't think it's ever been off roaded, i got a rave DVD that i think covers the whole Landrover range, (bring back the old style Haynes manuals).

Mine has not got the oblong plenum chamber, it is the newer one with the cross over pipes, but it would still have the sensors though i presume.

The engine turns over unless it is not in Park or Neutral, i have the eka code and have tried it and it's the same, havn't tried it after disconnecting the battery, but i have no fault message

Many thanks
Ian
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Old 20th-January-2009, 23:10
gavbriggs's Avatar
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Location: Sheffield uk
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Default Re: P38 v8 no spark but engine turns.

Quote:
Originally Posted by eightinavee View Post
Getting bored with the same question - the answer is its lost its security link between the engine ecu and the BECM.

that'd be a trip to the stealer/call out then?

question is why would it work then not then new sensor, work then not? something is causing the problem to occur and it may return if its not sorted? best to try the obvious first cos usually its free and easy and not knowing the op's abilities or what he may or may not have tried and my knowledge of only the stuff i have read or experienced, however stupid like the 'N or P' escapade i got into then i assume the fella wants some advice on what it may be before he spends hundreds going to a stealer to find it needs a plug cleaning or a switch moving. or even worse for them to keep the car trying the things he could do at the roadside and be charged for the privilage.

althoughi do agree it could be the link between the ecu and becm, it could also be other things and the stealer is, in my opinion a last resort for a fault that is unknown!

Last edited by gavbriggs; 20th-January-2009 at 23:17.
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  #8  
Old 20th-January-2009, 23:11
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Location: Plymouth, Devon
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Default Re: P38 v8 no spark but engine turns.

Hi Eightinavee
Is this the case i need to disconnect the battery for 30 mins + and do the key in the door job then.

Ian
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  #9  
Old 20th-January-2009, 23:15
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Location: Plymouth, Devon
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Default Re: P38 v8 no spark but engine turns.

Quote:
Originally Posted by gavbriggs View Post
that'd be a trip to the stealer/call out then?
So i gotta get phoning around tomorrow then, what is a rough cost of this, any idea.
Ian
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  #10  
Old 21st-January-2009, 04:08
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Default Re: P38 v8 no spark but engine turns.

50
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