1987 300sdl-- 1stcold start /day --starts/dies

[wallbenz]

Looking for help

1st start of day this car turns over than--dies (temp around 65 degrees)

Idle--seems low- if I simply give more throttle for 20 seconds or so--car will stay running/driveable. ONLY happens-so far On 1st start/day.

Tach- has been wonky for 2 years--works when it wants to-- now NOT working at all.

I attempted to increase Idle w/ ELR knob-- there seems to be ZERO response
In either increase/decrease.

I have read thru some OLD posts on same symptoms --people seem to point to EDS bad...

How do I resolve that? Or are there other places to check/go for increasing idle- if that indeed is the solution.

I thought it was fuel issue/first... But no smoke/no shake...
There is a "knocking exhaust" type sound -as if car is choking or exhaust is blocked when it is 1st started- and idle seems to low... but quickly goes away when i give it more throttle to increase idle