Ash - the wife's V6 auto commodore does exactly this as well (misses under light load only at a certain speed). It had me baffled for a long time - until I checked the plug leads and found two of them out of spec. The strange thing is it didn't do it under any other conditions.
I know you don't actually have any plug leads, but I'd be having a really close look at:
- the coilpack primary plugs (the retaining clips always break & the plug can work loose)
- the coilpacks themselves - look for evidence of arcing or tracking on the underside of them
- the plugs. Check the gap and check there is infinite resistance between the centre electrode & body (I had a few platinum ones that started to break down in this way).
- the conection between the coilpack & plug. From memory there is a small springy thing that sits between the coilpack & plug.
Mon, 16 May 2005 13:19
