by richardstubbs » Thu May 26, 2022 10:29 am
Well, P0149 & P1564 are related to timing; they are a timing error and requesting reduced fuelling to prevent engine damage. That will make it go slowly. The most common reason is the timing solenoid, but if it was present before and after a new pump I think you're being reasonable in ruling it out, at least in the first instance. It's possible that the new pump has the same fault but not all that likely, so I'd be inclined to look elsewhere first. If it says that the timing is out, the most likely cause it that the timing is, in fact, out.
There aren't many things that affect the timing, but it doesn't have to move much for the PCM to enter that protection mode. I'd be thinking about firstly checking the timing (with proper timing tools - they're dead cheap) to see if it's exactly right, and adjusting it if it isn't. If it is even slightly out then it'll generate those codes when it tries to go to either full advance or full retard, e.g. down a hill on the overrun. If it is right already, then you might need to pull the timing cover off to check the tensioner and chain. Does it rattle from a cold start? If so then the chain and tensioner will need changing.
It's also possible that there is more than one fault, i.e. the timing error is there all the time but there is also a fuel supply fault which is making it stop. They are not always easy to find, but it's really about following the pipework and looking for leaks. Good luck with that.
2005 Mk6 85T280 Camper
