MEAS oil & fuel pressure sensor driving me nuts

Discuss which Sensors work best with these ECUs and share how you are using inputs and outputs
User avatar
mefmotorsport
Posts: 543
Joined: Mon Aug 01, 2011 6:45 am
ECU Model: S100 Pro
Distributor: Mefmotorsport
Firmware Version: 79
Location: Merseyside
Contact:

Re: MEAS oil & fuel pressure sensor driving me nuts

Post by mefmotorsport »

Yes, exactly!
User avatar
Frallan
Posts: 29
Joined: Thu Aug 23, 2012 3:08 pm
ECU Model: S60 Pro
Distributor: PRD Sweden
Firmware Version: 60
Location: Sweden

Re: MEAS oil & fuel pressure sensor driving me nuts

Post by Frallan »

YESSSSS!!!! Feedback coming on Thursday night. THANKS!
Pank 1978-1980 VW dragster recordholder. New S60 project. Renovation ongoing.
Blue Carbon 1975 VW beetle, 2413 cc circuit racer
Pontiac GTO LS2
User avatar
ignitionautosport
Posts: 577
Joined: Wed Jul 27, 2011 5:30 am
ECU Model: S80 Pro
Location: New Zealand
Contact:

Re: MEAS oil & fuel pressure sensor driving me nuts

Post by ignitionautosport »

Wait, you're going to use 12V...? or like, 14V-ish whwen running... I'd buy a new (different) sensor before doing that, personally.
| '94 GSR Lancer | '96 Toyota Carib 20V | '83 Toyota Starlet | www.ignitionautosport.co.nz |
User avatar
Frallan
Posts: 29
Joined: Thu Aug 23, 2012 3:08 pm
ECU Model: S60 Pro
Distributor: PRD Sweden
Firmware Version: 60
Location: Sweden

Re: MEAS oil & fuel pressure sensor driving me nuts

Post by Frallan »

Did a Quick and Dirty yesterday, no go.
Managed to get a 5V signal and gauge that showed 7 bar pressure. But only static.
Yes, I will stop fooling around now.
Order coming. 50 UK Pounds plus shipping must be better than having a half good solution.
Pank 1978-1980 VW dragster recordholder. New S60 project. Renovation ongoing.
Blue Carbon 1975 VW beetle, 2413 cc circuit racer
Pontiac GTO LS2
User avatar
ignitionautosport
Posts: 577
Joined: Wed Jul 27, 2011 5:30 am
ECU Model: S80 Pro
Location: New Zealand
Contact:

Re: MEAS oil & fuel pressure sensor driving me nuts

Post by ignitionautosport »

Frallan wrote:50 UK Pounds plus shipping must be better than having a half good solution.
Sometimes (usually) it's cheaper than your time spent on it. A shame though, I hate wasting parts too.
| '94 GSR Lancer | '96 Toyota Carib 20V | '83 Toyota Starlet | www.ignitionautosport.co.nz |
MarcoV6T
Posts: 101
Joined: Tue Jul 26, 2011 12:20 pm
ECU Model: S80 Pro
Firmware Version: 58

Re: MEAS oil & fuel pressure sensor driving me nuts

Post by MarcoV6T »

A little late, but for what it is worth;
It would have worked if you put the resistor(at least a 1% precision 250 ohm resistor) between ground and the sensor ground wire, the signal would be between the resistor and the sensor ground wire.

Although it should work, it's not the purpose of this sensor, they are made to work with a stabilized power supply, and made for use when longer wires(distance) are needed, because the 'output signal' is current the length of the wires do not play a role. Although, the 'burden' resistor precision will play a big role on the output signal and heat will change its characteristics(resistance).
User avatar
Frallan
Posts: 29
Joined: Thu Aug 23, 2012 3:08 pm
ECU Model: S60 Pro
Distributor: PRD Sweden
Firmware Version: 60
Location: Sweden

Re: MEAS oil & fuel pressure sensor driving me nuts

Post by Frallan »

Thanks Marco!
I ended up ordering two new sensors that should arrive soon.
It also seems that I burnt one of them in my trial and error....
They are sensistive, I found out.
Appreciate your input though!
Pank 1978-1980 VW dragster recordholder. New S60 project. Renovation ongoing.
Blue Carbon 1975 VW beetle, 2413 cc circuit racer
Pontiac GTO LS2
troy
Posts: 50
Joined: Wed Apr 04, 2012 12:40 am
ECU Model: S80 Pro
Firmware Version: 62

Re: MEAS oil & fuel pressure sensor driving me nuts

Post by troy »

mefmotorsport wrote:
troy wrote:If the sensor is a 4-20mA you'll need a load resistor and then take the signal from across the load resistor. a 250 ohm resistor will give you 5v at 20mA (full scale).

It should work but its ugly and a bit of mucking around.
But surely the load resistor needs to go in SERIES with the positive supply then take the signal from the junction of the sensor wire and the load resistor?

Yes in series, but in the negative side. and take the the signal wire from between the resistor and sensor.

Its not really the best solution for this application, but should work.
User avatar
Frallan
Posts: 29
Joined: Thu Aug 23, 2012 3:08 pm
ECU Model: S60 Pro
Distributor: PRD Sweden
Firmware Version: 60
Location: Sweden

Solved! Re: MEAS oil & fuel pressure sensor driving me nuts

Post by Frallan »

OK,
I just received my 150 psi transducers.
Wiring the three red, green and black, and done! I have perfect signal that I bench tested both for fuel press and oil press.
All system OK.
Start up very soon.
Pank 1978-1980 VW dragster recordholder. New S60 project. Renovation ongoing.
Blue Carbon 1975 VW beetle, 2413 cc circuit racer
Pontiac GTO LS2
Post Reply