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merlinpjl

merlinpjl

Active Member
Posts
241
Location
East Lancashire, on the edge of the Pennine Moors.
2000 model 4.6 V8 Petrol / LPG

Went down to the in-laws yesterday, Christmas Day (25 miles), Range Rover ran as well as it always does. Parked up, came out and went to pick up another relative from 5 minutes away, came back and parked up.

When it was time to come home, I got in , turned they key and the engine began to spin over as it always does but would not fire, it always starts first turn.

There is plenty of juice from the battery, but no firing, it does feel like it is on the edge of firing, but just not quite there.

It was dark, I got out my torch to have a look round, that was flat and there wasn't enough street light to see anything.

I couldn't smell petrol so it doesn't seem to have flooded, and never has before anyway.

The car is LPG, but always starts on Petrol anyway, there is plenty of petrol in the tank and the LPG is nearly full.

Then the rain started!

This was at 11pm, RAC said a minimum of 2 hours so I have booked them in for 10 am this morning and came home in the father in law's car.

Going back this morning early to see if I can spot the problem before the RAC turn up then I can drive back!

I have a Hawkeye and some LPG software, but I can't see this being the LPG as the car should start on petrol.

Any thoughts or pointers as to where to start?
 
No messages on the message centre? Engine Check light on or off?? Sounds like the classic RF interferance problem and/or loss of sync. Moving it up the road a bit may allow it to start.
 
RAC chap has his laptop connected up and it won't talk to the car.

I think perhaps this might be because mine is an LPG with it's own ECU.

The RAC chap was thinking that it may be the crankshaft sensor but without diagnostics can't confirm.

Fuel pump isn't running, no spark, just spins over.....

I have some software for the LPG system at home, hopefully that will tell me.

Does the crankshaft sensor sound reasonable, any tips, where is it?
 
CPS is plausable...and I wouldn't consider the reason the RAC couldn't talk to the car as being the LPG system....the only thing on the P38 that is OBDII compliant is the Petrol Engine ECU....more likely a dodgy Diagnostic Socket due to pin corrosion....

First thing I would do is find out why the lack of communication, so pull the bottom of the dash out and look at the wiring to the diagostic socket....

Second thing is then get it back on diagnostics and look for anything obvious fault-wise....

Third thing is no faults found, try a Syncmate or use diagnostics to re-sync the BeCM to the Engine ECU....

Without a working diagnostic socket, no computer or syncmate et al will work.

If you want to take a punt on the CPS, they aren't to badly priced, but I would prefer a diagnostic check first!
 
merlinpjl said:
What do I need to restore sync?

I have a Hawkeye, but haven't seen a function for that.

Help!
Click to expand...
I don't have a Hawkeye and I have just ownloaded the manual from Bearmach - but it is not clear wether you can re-sync using this tool....

It mentions on the Diesel and Motronic system it can read the code from the EDC/ECU and input it into the BeCM...

If yours is a THOR motor, it should have the Motronic system and as such the Hawkeye should be able to read the Sync code from the Engine ECU and then be able to input this into the Immob Code for the BeCM...but i have no idea how and the manual isn't very clear!!:eek::confused:
 
check which version of the software is installed on yours. if less than v5 email bearmach and they will ask you to send to them for updating, they have never charged me for this so i would assume it will be free to you, bar the postage
[email protected] is the email i used or you can purchase the usb lead to download the update to your hawkeye. you will also need to contact omitec with your hawkeye serial number, they will then issue you the new unlock code for your updated hawkeye v5 foc

http://www.bearmach.com/files/_download-files/Hawkeye V5 Application List.pdf

http://www.bearmach.com/files/_download-files/Version 5 Manual.pdf
 
Last edited:
My Hawkeye does have V5 of the software on it.

I can't get to the function "Security Re-Learn"

Where is that?

Also, I can see that the various diagnostic tools will do the sync between the original BECM and the factory fitted ECU, but mine is an LPG converted one so the ECU has been replaced by a Zavoli ECU.

Do I take it that the process will be the same for re-syncing?

I will be pulling out the diagnostic socket in the morning to check for corrosion etc.. It could well be the reason that some functions don't work on the Hawkeye!
 
merlinpjl said:
My Hawkeye does have V5 of the software on it.

I can't get to the function "Security Re-Learn"

Where is that?

Also, I can see that the various diagnostic tools will do the sync between the original BECM and the factory fitted ECU, but mine is an LPG converted one so the ECU has been replaced by a Zavoli ECU.

Do I take it that the process will be the same for re-syncing?

I will be pulling out the diagnostic socket in the morning to check for corrosion etc.. It could well be the reason that some functions don't work on the Hawkeye!
Click to expand...
But it should still have the original Engine ECU surely...all the LPG ECU does is take over from the Engine ECU when the fuel switches over.....

You should still have the Engine ECU in place else the BeCM will have a fit!!!
 
My 98 v8 petrol had the same symptoms a couple of months ago. Turned out to be the wiring connector to the crankshaft sensor; was loose and mucky. Cleaned it up and reconnected properly - and put some insulation tape around connector. Been fine ever since. Worth a check.
 
merlinpjl said:
My Hawkeye does have V5 of the software on it.

I can't get to the function "Security Re-Learn"

Where is that?

Also, I can see that the various diagnostic tools will do the sync between the original BECM and the factory fitted ECU, but mine is an LPG converted one so the ECU has been replaced by a Zavoli ECU.

Do I take it that the process will be the same for re-syncing?

I will be pulling out the diagnostic socket in the morning to check for corrosion etc.. It could well be the reason that some functions don't work on the Hawkeye!
Click to expand...

How would it run on petrol without the engine ECU? With LPG you just have an extra ECU to go wrong:rolleyes:
 
merlinpjl said:
My Hawkeye does have V5 of the software on it.

I can't get to the function "Security Re-Learn"

Where is that?

Also, I can see that the various diagnostic tools will do the sync between the original BECM and the factory fitted ECU, but mine is an LPG converted one so the ECU has been replaced by a Zavoli ECU.

Do I take it that the process will be the same for re-syncing?

I will be pulling out the diagnostic socket in the morning to check for corrosion etc.. It could well be the reason that some functions don't work on the Hawkeye!
Click to expand...

check through the link for hawkeye manual that i posted for the security relearn function. your engine management ecu will still be the same, the lpg has an add on ecu that piggybacks the petrol ecu. also you say some functions on the hawkeye are not working, if you mean air suspension, that function requires a dedicated air suspension cable different to the standard cable,
 
Last edited:
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