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[Vmax]

Sorry meant to ask What are bl settings? 

[Vmax]

My mechanic suspects that I need a new EGR valve to sort the above mentioned probs  :-/ - What do you think?

[Kevin Wood]

My mechanic suspects that I need a new EGR valve to sort the above mentioned probs  :-/ - What do you think?

Could be suspect but, to confirm, cut out a blanking plate from a piece of coke can and mount it under the valve to block the ports In/Out of the valve, then see how it runs.

Kevin

[Vmax]

Thanks Kevin, I'll give it a go 

[Kevin Wood]

.. and if you need a Tech 2 eye cast over it I'd be happy to oblige, of course. 

Odd that it got worse when the crank sensor was changed. If the EGR doesn't help I wonder if it's worth a squirt of switch cleaner in the crank sensor connector - just in case it's making poor contact?

If that doesn't help, maybe worth swapping back to the old sensor - or was that totally FUBAR?

Kevin

[mathewst]

Kevin what are the main simptoms of a faulty crank sensor?
I would gladly do a paperclip test but on my model that is not possible

[Vmax]

Thanks again Kevin. I think I see the problem now. The pipe that runs down the drivers side of the block is connected by a piece of rubber hose, this has a big hole in it. The mechanic said he changed the rubber connector last time he looked over it because it had blown. It's gone again so can I assume that this could mean a knackered/blocked EGR valve or could it be a blockage in the pipe?   

[Vmax]

Kevin what are the main simptoms of a faulty crank sensor?
I would gladly do a paperclip test but on my model that is not possible

Mathewst -My engine would cut out every now and again when I stopped at junctions etc.

[Vmax]

Well this is odd. I replaced the burst pipe and tried the EGR off my other Miggy- still the same probs. So I replaced my new crank sensor with the old one and it runs. What is going on here? any ideas please? I'm expecting it to start playing up again. Unusual if the new Vaux sensor is duff eh? :-/ 

[Vmax]

Well this is odd. I replaced the burst pipe and tried the EGR off my other Miggy- still the same probs. So I replaced my new crank sensor with the old one and it runs. What is going on here? any ideas please? I'm expecting it to start playing up again. Unusual if the new Vaux sensor is duff eh? :-/ 

The rubber pipe has burst again I ony replaced it last night! Any ideas please chaps ? I used thick rubber hose - I assume it gets hot, do I need a particular type of hose? Stressed!  :-/

[Elite Pete]

If its the rubber hose from the exhaust manifold, it could be blocked cats

[Kevin Wood]

Rubber hose sounds like the SAI injection pipe (silver one that runs across front of cam belt cover?).

As said, could be that the exhaust is partially blocked and there's too much pressure build-up here or that the one-way valve in the sai system is faulty and allowing hot gases up the rubber pipe.

Note also that a hole here would cause the lambda sensor for that bank to misread and perhaps cause running issues, although it sounds like you've also been dealt a faulty crank sensor!

I would block the sai pipe with something (15mm plumbing stop-end and jubilee clip?) and remove the whole system as it doesn't do much. Then see if it blows the pipe off again (exhaust blocked).

Kevin

[Vmax]

Yes it's just a small piece of rubber that connects the pipes together. it must have got realy hot as it burst through some realy thick rubber pipe after a couple of miles. If my exhaust is blocked what then? sounds expensive??

[Vmax]

Sorry, when you say remove the system do you mean the part that runs across the front of the engine?