Hi folks,

Rami here writing you from the Esmerald island (Ireland). I've a lovely '89 NA 1.6 that I just completed a turbo build based on the Kraken kit.

All has gone relatively smooth, except for the one thing I haven't been able to wrap my head around wich is the oil pressure sensor.

I have the 1.6 with the "real sensor", which was working perfectly fine. But since I swapped the gauge to the Can Checked gauge, I lost the oil pressure reading....

Done some digging and as you probably know, I figure out that the pressure sensor goes straight to the gauge, never goes to the ECU. So I ran a new wire from the sensor up to one of the analog ports of my ME442... it sees it, but I have no clue what values to use to calibrate it.

Has anyone succesfully got their stock pressure sensors to work with a Standalone ECU? If so, what's your recommendations?

Most of the sensors I see out there have 2 or 3 wires where this one only has one for only the signal, where the power used to go to the gauge instead of the sensor and only measuring ohm resistance.

Anyways, if that doesn't work... what recommendations are out there?

Cheers
Rami

 

My guess is the stock cluster has some circuitry to convert a simple resistance signal to whatever it uses to drive the needle up and down. Your ECU will want a 0-5v signal only. So remove the stock sensor and install a 0-5v pressure sensor, usually I use 0-150psi.

 

Yaaaa... that's exactly my guess. The gauge itself definitely has 12v going to it and a mini-circuit on it using the ohms to calculate kg/cm2 of the oil pressure.

Any known good sensors that you would recommend that would fit the intricate 1/8 BSPT thread?

Cheers!

 

If you don't care about the instrument cluster gauge working, yeah just get a Honeywell MIPAN2XX100PAAAX for 50-60 bucks- then use the supplied sensor data.

If you want to use both, then you need an adapter - esp if if you want to add a knock sensor.

 

Would that sensor do both Temp and Pressure?

That seems to be 1/8NPT and the port on my engine is 1/8 BSPT which is different, so I'd have to get an adaptor for it from NTP to BSPT....

The stock gauge is gone, replaced by the "Can Checked" one, which is what triggered this whole ordeal trying to get my oil pressure reading back. Also, would be nice to use the safety features in the ECU.

Can you elaborate more on the ESP and knock sensor?

Cheers,
Rami

 

Correct, you need a 1/8npt to bspt adapter, there's plenty out there, usually for turbo oil feeds, but you can throw a 1/8npt plug in the feed for now. Just make sure it's steel and not brass.

Don't get a temp/pressure one, it's not in a good location for temp and they've been incredibly hit or miss for me as to whether or not they actually read temperature.

 

Not for both- I'm not sure if you could find a 1/8 BPT combo gauge. So if using an adapter, you would not have an accurate oil temp since the sensor is no longer getting flow passed by it.

Glowshift SKU: GS-FA-05 is the adapter i use, but thats so I can use the factory gauge & sensor. That will get you knock sensor clearance as well.

I use a $30 Bosch KS4P off a porsche/VAG. I would ask ME (motorsports electronics haha) if they have a recommended sensor that jives with their tuning software.

 

Excellent info lads, thank you both.

Yes, I currently have the "T" adaptor for the turbo feed but the female port is also BSPT. Have not been able to find a male BSPT to just NPT ports to use a regular sensor instead of the Mazda one.

I'll discuss with my tuner tomorrow as he's also a ME reseller. Although I've seen in the ME website that they do recommend the Bosch combo (PST-F1 I believe).

I might leave that as is and add one of those sandwich plates for the oil filter maybe.... That'll give me NPT ports and even have better access.

I'll let you guys know how it goes
Rami

 

Here's the one I used:
you need to deburr all the metal shavings out, but it's 1/8bspt male to 1/8bspt female, so you can keep your stock sender, not that you need it. Then you have x3 1/8npt ports to use for pressure or turbos.

 

Well, in your case the glowshift would a great option. It has 3 1/8 npt ports and clearance for the knock sensor. You could run your turbo feed, temp sensor, and pressure sensor on that adapter. Having the turbo feed off that adapter allows oil to flow past the temp sensor... You would just need a 1/8 BPT cap, since your factory gauge is now useless.

 

Curly, that link doesn't work - but I think were talking about the same one

https://www.glowshiftdirect.com/1-8-...XFjLQx7G10U8NN

 

Yup that's the one. Note that you probably cant run a temp sensor in it, unless you put it in the 1/8bspt end, since most temp sensor probes are too long: