thats good... run it till it quits again and keep some black and purple wire handy.... or jus black maybe since tha red is constant...but tha only problem with that is tha red is constant power no mater if tha key is on or off.............
ecu pump driver circuit is done... you can run it this way if ya want.. disconnect both pos and neg from pump and tape 'em up.. take a regular ground from anywhere on tha block to tha neg on tha pump.. find a "purple" anywhere on tha motor.. splice into it and go to tha positive on tha pump...
pretty sure tha blocks are of different castings.... porting is way different plus tha 2.0 in first original casting is with tha sleeves in it.. thats one of tha reasons they are so tough.. has "99.9%" fewer interface problems....
All 2.4 175's were chrome... used tha 200 block half.. thats why they ran really good... "most" could stay with any 200.. tha horizontal front on tha 200 made a slight difference with top end.
looks ta be an '88 or very early '89 at best........ '89 went ta bucket cowls.. look here for a date stamp on tha block... probably won't be as clear as this one but is in tha same general area.. behind tha "bend" in tha timin' arm...
are you goin' ta pre-mix?.. tha only "alarms" that merc has is oiler and over heat... oiler will be oscillating beeps (unless module goes south) and over heat is a constant beep... so why do you want to "disconnect" oiler warning?
https://www.screamandfly.com/attachment.php?attachmentid=506494&d=1644074272
blow it up and you can see tha 4 large dots that are NOT labled... tha dia is for tha 280 but tha diverters are tha same....
naw.. jus chunk it... its supposed ta keep tha motor from dyin'/bring it back ta normal idle if ya chop tha throttle instantly.. ya might wanna check timin' (mainly wfo) if ya do get rid of it...
any kinda "constant" alarm at key turn on, motor not started its more than likely tha oiler control module.. you can disconnect tha purple goin' ta tha module and it should stop... that module's soul purpose is ta make any kinda signal it receives "ossilate".. if its comin' on constant instantly...
