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+--- Thread: Oil pressure gauge wiring?! help (/showthread.php?tid=22428)
Oil pressure gauge wiring?! help - Tom - 22-03-2014
Trying to wire in my gauges, all the lighting is done and that all works, temperature is working i think but its only one wire. This pressure gauge though has a bunch of terminals on the back that are doing my head in. Have a look at this...
![[Image: 20140322_144555_zps44e28a4d.jpg]](http://s817.photobucket.com/user/tomw1123/media/20140322_144555_zps44e28a4d.jpg.html)
Forgive the shit angle, you can see the signs there though. The + is hooked upto ignition live. The S is on the pressure sender, S for signal. And the gauge does nothing. So i figured perhaps that other terminal is a seperate ground? Touch it to ground and with the car running the needle shoots over 100psi and stays there, now is there a chance that a cold XUD makes over 100psi of oil pressure? Or am i doing something wrong? Thanks guys!
RE: Oil pressure gauge wiring?! help - Jimbo - 22-03-2014
6 bar when cold is.normal so maybe 100 psi yeah. Find a converter cos I cant.remember the ratio between bar/psi
RE: Oil pressure gauge wiring?! help - Tom - 22-03-2014
6bar is only 87psi...
RE: Oil pressure gauge wiring?! help - Jimbo - 22-03-2014
Ok yeah id say somethings not right there then. Unless your producing massive oil pressure
RE: Oil pressure gauge wiring?! help - Tom - 22-03-2014
Its acting weird, i left my wiring how it was and it comes down to about 50psi when the oil is just over 40 degrees, then when i rev it, it shoots past 100 and back again :/ Will go for a drive tonight and get the oil hot and see what happens....
RE: Oil pressure gauge wiring?! help - HDIkyle - 22-03-2014
Mine tends to stay at 60 cold and over 100 revving then settles to 20ish warm only rising slightly when driving then
RE: Oil pressure gauge wiring?! help - Niall - 22-03-2014
(22-03-2014, 04:11 PM)Tom Wrote: Its acting weird, i left my wiring how it was and it comes down to about 50psi when the oil is just over 40 degrees, then when i rev it, it shoots past 100 and back again :/ Will go for a drive tonight and get the oil hot and see what happens....
That sounds fine Tom. It will rise with revs. I don't know about the XUD but i know with my GTi, i see about 80psi on hot oil at 4k, 80-90psi on idle stone cold and about 35-40psi on idle hot
RE: Oil pressure gauge wiring?! help - darrenjlobb - 22-03-2014
Tom how did you wire the sender? is one terminal G? This terminal ISNT ground, this is the signal terminal to the gauge..the other pin on the sender needs grounding....
RE: Oil pressure gauge wiring?! help - Tom - 22-03-2014
Right been for a drive tonight and actually got the oil hot. Tick over with 80/90degree oil is just below 25psi. Then between 2 and 3krpm it goes upto 50/75psi and then after that it goes high still but im holding on for dear life at this point not looking at gauges!
(22-03-2014, 08:04 PM)darrenjlobb Wrote: Tom how did you wire the sender? is one terminal G? This terminal ISNT ground, this is the signal terminal to the gauge..the other pin on the sender needs grounding....
Its a one terminal sender my ansome :p