02-01-2013, 07:34 PM
I did the LDA mod, but the pin that the LDA actuates got stuck. To unstick it, I had to remove the throttle arm so I could open an access panel and push the pin back out. I moved it back and forth a few times with WD40 until it was free. I reassembled everything and that seemed fine.
From cold, the engine starts easily and idles at around 1,000rpm like it always has done. However, when hot, the idle can drop as low as 800rpm and the engine hunts seriously. It's also very smoky at idle and difficult to start. Another thing I notice is that as I press the accelerator pedal engine rpm does not rise initially, then all of a sudden I get 2,000 rpm, like a dead spot at the start of the pedal.
As it's fine from cold, I thought this was timing related. As it's a 406 with a semi-ECU controlled pump, have I disturbed something timing related on the pump? I thought it might be veg related, but it's just the same on pump diesel (in fact, possibly worse!)
I hope you don't mind a 406 interloper, but this seems to be the place to ask!
From cold, the engine starts easily and idles at around 1,000rpm like it always has done. However, when hot, the idle can drop as low as 800rpm and the engine hunts seriously. It's also very smoky at idle and difficult to start. Another thing I notice is that as I press the accelerator pedal engine rpm does not rise initially, then all of a sudden I get 2,000 rpm, like a dead spot at the start of the pedal.
As it's fine from cold, I thought this was timing related. As it's a 406 with a semi-ECU controlled pump, have I disturbed something timing related on the pump? I thought it might be veg related, but it's just the same on pump diesel (in fact, possibly worse!)
I hope you don't mind a 406 interloper, but this seems to be the place to ask!