Posted August 16, 20159 yr Any way to to replace it with one that will read accurately. I've heard of using the duramax one I think???
August 19, 20159 yr There is not. The ECM is programmed for a switch and not a sending unit. The only way to get real oil pressure is an aftermarket gauge.
August 19, 20159 yr There is not. The ECM is programmed for a switch and not a sending unit. The only way to get real oil pressure is an aftermarket gauge. Idiot gauge just like the 2nd gens.
August 19, 20159 yr You can install a pipe T to retain the OEM function & give a tap for an after market guage. I used to see this often on flybridge cruisers with 2 sets of guages (upper & lower) stations. The "sending unit" was actually a variable resistor to ground... power was fed from the instruments to the "sender". There were some that had the same resistance values & others that were not. No master list I'm aware of. Eventually, I've had sender diaphrams fail & leak oil... The switches don't usually leak but can still fail. The oil light switch is just a grounding switch. Edited August 20, 20159 yr by flagmanruss
August 19, 20159 yr I am pulling my oil pressure reference from a plug in the cam journal which is just above the ECM.
Any way to to replace it with one that will read accurately. I've heard of using the duramax one I think???