[QUOTE=mark_23;4616]Hi all,
i know some of you think that people that dont own a sandman shouldnt be posting on here but i need some help with my kingswood and i hope someone here might be able to help me...

anyway ive been trying to get the motor in my HX running sweet with the 2 bbl that replaced the 4 bbl but it wont idle when i put it in drive or reverse. I hooked up a little tacho and in park it revs over 1200(limit of my tacho) but when i drop it in gear it dies.. if i rev it a bit when i put it in gear it will stay running and idle at about 650 RPM with no pedal... so whats going on?

My guess is that your engine has poor vaccume, and i have diagnnosed a few 253's in the past at around the 300,000 km mark with valves that just don't seat correctly anymore, causing mildly poor vacuume.
these motors wouldn't idle in gear, but fine in N or Park - same symptoms as yours..

if you own one of these cars and tinker yourself, a vacume guage is cheap and very useful.