Meeky Moose Posted March 10, 2004 Share Posted March 10, 2004 any difference in an ea81 oil pressure sending unit and an ea82? i stuck a new one i had sittin on my shelf for an ea81 on my ea82T that i stuck in the RX.. guage reads fine (around 50 at 2k rpms) but i was curious as to any differences.. to me the original one on the old engine and the ea81 sending units looks the same.. same threads and all, lol.. Quote Link to comment Share on other sites More sharing options...
archemitis Posted March 10, 2004 Share Posted March 10, 2004 the sending units for the guages ea81 and ea82, that have the small threaded nipple, all send the same ohm, current, whatever. i have an ea82 in my ea81 car, and it sits right where the mechanical guage sits. i guess the only ones that are different are the ones with the big threads, almost as big as my thumb, are for dummy lights, or maybe digi dashes, since i have never had either one, im not sure. as far as my experience, if it fits, and its off a subaru, it works. Quote Link to comment Share on other sites More sharing options...
edrach Posted March 13, 2004 Share Posted March 13, 2004 Odd, I had the sender in my '84 Brat fail recently. Couldn't find an EA81 unit in the yard so I bought one from an EA82. It works; but I have 75 PSI at all times even at idle. Most likely I got a flakey unit because I see no reason for them to be different for the two engine types. Quote Link to comment Share on other sites More sharing options...
subaguy Posted March 13, 2004 Share Posted March 13, 2004 My oil pressure went way down. Bought a new sending unit and it still is the same. Am not having any engine problems. I think there is something else (ohms, etc). This is a 1988 subaru ohv engine. Am going to do further checking (wiring) Quote Link to comment Share on other sites More sharing options...
subiemech85 Posted March 13, 2004 Share Posted March 13, 2004 since you have the electrical guage, install a manual guage http://www.ultimatesubaru.org/forum/showthread.php?s=&threadid=12912&highlight=guage found out the elec guage lies Quote Link to comment Share on other sites More sharing options...
subaguy Posted March 13, 2004 Share Posted March 13, 2004 Thanks for the info. Will try some of these ideas. Quote Link to comment Share on other sites More sharing options...
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