http://forums.bimmerforums.com/forum/showthread.php?t=454501
the idle control valve on a 318 is on the back side of the throttle body. Held on by two torqs screws.
It may be a stuck pcv valve.
To address an idle that is too fast on a 1989 Dodge D100 with a 318 engine, first check the throttle linkage for any binding or misadjustment. Ensure that the idle speed screw is set correctly and that the throttle plate is fully closing when at rest. Additionally, inspect for vacuum leaks in hoses or gaskets, as they can cause a high idle. Lastly, consider checking the idle air control valve if equipped, as it may need cleaning or replacement.
The proper idle speed for a Dodge with a 318 cubic inch engine about 475 to 500 RPMs. Any idle below that will cause stalling.
50 psi +or- 5psi
in the cilinder head cover.
This old? 20-60 psi at idle
Added info to question: Vacuum also coincidently went from steady 20psi to 15psi/knock - small backfire/miss on acceleration from idle. Knock is steady at idle.
No, the shift control systems are different.No, the shift control systems are different.
It will overheat at idle.It will overheat at idle.
No, Dodge and Chevy parts will not interchange. SORRY
Valve timing is not adjustable on a stock engine. The timing chain is either installer correctly or not.