oil temperature - OBD port

[jaykay]

Playing around with my new durametric cable.....oil temperature is available via the OBD port.

So I would think that a aftermarket OBD gauge would easily display this infomation without having to install a sensor somewhere. It would be nice to have an onboard computer to display durametric on your double din screen!

Do any know whether the stock OBD oil temp. info. is reliable?

[The Radium King]

check with chris zang; he tried that route and found that the oil temp info is proprietary and standard obd guages (well, the plx obd gauge, anyway) can't read it.

[BYprodriver]

I am pretty sure it is not, & oil temp is based on coolant temp. I assume you can verify this by comparing the 2 temps & see if you can achieve a different number for the 2 fluids.

[jaykay]

Originally Posted by BYprodriver

I am pretty sure it is not, & oil temp is based on coolant temp. I assume you can verify this by comparing the 2 temps & see if you can achieve a different number for the 2 fluids.

I didn't record the session but I do recall "engine temperature" matching my water temp gauge indication very closely at idle with the oil temp lagging behind with the car idling up to a water temperature of 80C (180F). There seemed to be a 10C spread up to that point....with the car sitting still and idling. It looked promising to me. Perhaps those with lots of "data" experience could comment.

I believe I have seen this oil temp probe on a schematic long ago and the lead appeared to go the the ECU with its location down away from the heads. I will try and post it if I find it.

Perhaps Chris has a later version DME software where the oil temp is locked up.....can't recall his model year. Oil temp was right there being actively read on the session I ran!

[blue2000s]

Brockway Engineering R1000 OBDII Multi Gauge Porsche 996 99-04

[jaykay]

Originally Posted by blue2000s

Brockway Engineering R1000 OBDII Multi Gauge Porsche 996 99-04

Yep I have scouting this for a few months! Do you have it yet? How is the colour match of the plastic face? You cant beat the 996 single din mount and flashing alarm presets.

[Ghostrider 310]

jaykay did you buy that cable direct?

[jaykay]

No its a softronic cable. I got it on planet 9, on special. Once I find a good internet connection method, I am going to read my ECU and flash it. I was holding off on this as I wanted to get all my mods in place first but it seems they like a good stock file to work with; the modified file will adapt to the changes that are made after.....counter intuitive to me ....

Hop fully this a few other things will give me enough ooooomph to get past people in my run group when I am able to get back to track driving. In the lower groups up here you have to pass on the straights so you have to be right up on them on a straight....loose momentum and you will have a 944 up your bum as well

[The Radium King]

i looked on the ecu pinouts posted on pelican (in the engine swap tech article) and they do show an oil temp sensor for the 7.2 ecu. however, it is a 911 diagram and the boxster may not have that sensor (similar to the boxster not having an oil pressure sender - wtf). so, it would be nice to know if there is any truth to the statements i've previously read that the boxster just extrapolates oil temp from water temp or whether there is an actual sensor someplace. it would be nice to use an obd gauge instead of installing a whole new sender and having to wire from the back of the car forward. would have to wire an oil pressure sender regardless, but most of the obd gauges allow for external inputs as well so could accomplish it all with one gauge instead of two.