I'll try and find the startup sequence i ihink it was in a post by 8in avee on a forum. But i don't imagine any sensor will be to blame if it starts up perfectly on easy start. Gradually take all the sensors out and see if anything's obviously wrong.ie crank sensors can be affected if the plate is cracked or the signal can be fuzzy if metal gets stuck on the end. Gems is prone because the trigger arrangement is very flimsy bent metal( Thor is cast and machined into the flywheel) .
tomcat59alan
Well-Known Member
Fires and starts,thanks for the heads up. The cars been standing for years so I guess it could be something as simple as a corroded contact. That was the problem with the starter motor which I cured yesterday.Away for a while tomorrow so I will try again when I return.
tomcat59alan
Well-Known Member
That would be a great help.
Knew I'd seen it somewhere.
tomcat59alan
Well-Known Member
Just a quick update while I wait for my taxi, put the timing light on and it strobes when cranking. More petrol and crank sensor check when I get back.Hasta pronto amigos/as
wooly123
Active Member
i think crank sensor is ok as i have good spark,still have dry plugs,thanks for looking,
wooly123
Active Member
hi, if i have good spark does this mean crank sensor is ok,thanks for any any help please.
Don't know, to be honest. Looking in RAVE it says (for crank position sensor):
As there is no default strategy, failure of the CKP
sensor will result in the engine failing to start. The fault
is indicated by illumination of the malfunction indicator
light (MIL) on North American specification vehicles.
the others.
That seems to match your symptoms although it makes no mention of spark plugs. Guess it does it by stopping fuel? I'm surprised there is no fault code though. Other possibility if cam sensor, I guess. RAVE says:
If the camshaft sensor fails, default operation is to
continue normal ignition timing. The fuel injectors will
be actuated sequentially, timing the injection with
respect to top dead centre. Injection will either be
correct or one revolution out of synchronisation. The
fault is not easily detected by the driver. The fault is
indicated by illumination of the malfunction indicator
light (MIL) on North American specification vehicles.
Again, I'd expect a fault code though.
@Saint.V8 is pretty clued up on the v8. He might have some ideas?
I would suggest ensuring that the BeCM and the engine ECU are in sync - you say you have tried to do it but are not sure you have done it correctly - before going further, you must be 100% sure they are in sync and the codes are correct - else you will spend forever and a day going round and round in circles.
Prerequisites:
And go from there - if you are not 100% sure on any of the above, you will be wasting your time looking elsewhere until you have the basic ingredients together.
Prerequisites:
- Strong Battery
- Good engine Earth
- Fuel Pressure
- Engine ECU and BeCM in sync
- Air
- Spark
And go from there - if you are not 100% sure on any of the above, you will be wasting your time looking elsewhere until you have the basic ingredients together.
tomcat59alan
Well-Known Member
Just an update from me, feeling a bit better today so I checked the crank sensor connector, fiddled about with it and the bugger started!. Tried a few times and it started fine then began to run rich, knackered now so glared at it, locked up and called it a day
FWIW wife's petrol 307 refused to start a while back & that was no fuel at plugs caused by dead crank position sensor. ecu not seeing a signal so as far as it was concerned the engine wasn't turning so no need to provide fuel. Everything else present.
Same issue a couple of years later & the sensor was covered in crap. After cleaning it worked fine - so similar to the comment above by johnnyb70.
Appreciate it's not a LR but cleaning it & its connector could be a good start.
Same issue a couple of years later & the sensor was covered in crap. After cleaning it worked fine - so similar to the comment above by johnnyb70.
Appreciate it's not a LR but cleaning it & its connector could be a good start.
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wooly123
Active Member
hi, peoples,recieved becm back from rick,who serviced it, installed it ,still no start,have check light,engine will crank all day whith out starting,have fuel pressure, done security relearn,with nanocom,says security mobilised yes,still no fuel to plugs, please help,perhaps i am thick and missing something ? thanks for all your help.
