Dave448
Probationary Member
- 9
- 0
- Jun 22, 2012
-
ft laud,
Florida
My 95 420a eclipse has a 2 wire oil press sender PS277 $45 special order.....and I'd like to use the 96 up 1 wire version PS278 $15 available locally....but what does the 2nd wire do on mine?
Started out replacing timing set, fix oil leaks, mounts...HEY my whole motors apart...how did that happen?! ! Accidentally BROKE the oil pressure sw while hoisting the block out. Oops! Now $600 later give or take...heres more unplanned $. If I can swap to the 96 up type I can save money and waiting time. Sooo anyone know what mystery wire # 2 does?
The FSM diagram (below) shows 1 wire and 2 wire oil press sender plugs BUT does NOT show individual wires on the diagram. It appears the light gets 12v from the ign switch and the ground is applied via the oil press switch till the car starts then ground is removed to turn the light off.
1. Does wire #2 go to the ECM to shut off fuel pump if pressure drops? Ive seen other posts that say there is no such functionality.... (but that info may be incorrect) ...so...maybe or maybe not.....
2. Does the 2 wire switch pass signal from wire 1 to wire 2 and ground at another location? Its broken open and appears to ground directly to the block inside the switch...so....again...maybe or maybe not....
3. Does wire 2 maybe go to the Confusselator valve? Hmmmmm....!!
I considered (and dismissed) the idea of an aftermarket gauge bcus its just a daily driver...not a tuner and a gauge would be out of place.)
If anyone knows what mystery wire #2 does might save me another $30 or so unplanned $$$ and even more down time waiting for the part. BTW if I can pull this off i know i'll need to hit the boneyard for a suitable plug for the 96 up sender switch but they usually have lots of eclipses (usually with all the good stuff gone already).
Thanks in advance.
(NEWB) Dave
FSM diagram for all the good it does....
Started out replacing timing set, fix oil leaks, mounts...HEY my whole motors apart...how did that happen?! ! Accidentally BROKE the oil pressure sw while hoisting the block out. Oops! Now $600 later give or take...heres more unplanned $. If I can swap to the 96 up type I can save money and waiting time. Sooo anyone know what mystery wire # 2 does?
The FSM diagram (below) shows 1 wire and 2 wire oil press sender plugs BUT does NOT show individual wires on the diagram. It appears the light gets 12v from the ign switch and the ground is applied via the oil press switch till the car starts then ground is removed to turn the light off.
1. Does wire #2 go to the ECM to shut off fuel pump if pressure drops? Ive seen other posts that say there is no such functionality.... (but that info may be incorrect) ...so...maybe or maybe not.....
2. Does the 2 wire switch pass signal from wire 1 to wire 2 and ground at another location? Its broken open and appears to ground directly to the block inside the switch...so....again...maybe or maybe not....
3. Does wire 2 maybe go to the Confusselator valve? Hmmmmm....!!
I considered (and dismissed) the idea of an aftermarket gauge bcus its just a daily driver...not a tuner and a gauge would be out of place.)
If anyone knows what mystery wire #2 does might save me another $30 or so unplanned $$$ and even more down time waiting for the part. BTW if I can pull this off i know i'll need to hit the boneyard for a suitable plug for the 96 up sender switch but they usually have lots of eclipses (usually with all the good stuff gone already).
Thanks in advance.
(NEWB) Dave
FSM diagram for all the good it does....
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