Ben_Copeland
|
| posted on 10/6/12 at 06:14 AM |
|
|
Ms2 temperature sensor problems
Need a bit of advise please,
My ms2 doesn't seem to be reading the Intake temperature properly, infact it's stuck on 21oc.
It's was all working fine before, then suddenly it's just sat there.
I've unplugged the sensor and it stays the same, I've checked the wiring for resistance and nothing. I've checking inside the ms for
anything obviously resistance wise but nothing. Is there something I'm missing here ? 
Thanks
Ben
Locost Map on Google Maps
Z20LET Astra Turbo, into a Haynes
Roadster
Enter Your Details Here
http://www.facebook.com/EquinoxProducts for all your bodywork needs!
|
|
|
|
|
mark chandler
|
| posted on 10/6/12 at 08:52 AM |
|
|
Dodgy plug maybe, identify the terminations within megasquirt and short out, you should then see the temp leap.
Showing 23 degrees is a little odd though, disconnected it would be below 0.
You could always try saving the config then reflash.
Regards Mark
|
|
|
Ben_Copeland
|
| posted on 10/6/12 at 04:35 PM |
|
|
Its bazarre, if i put the signal cable to earth the temperature flicks but goes back to 21oc.
I'll have to try it with the cover off, and the cable disconnected from the ms plug.
Anyone else got any ideas?
Ben
Locost Map on Google Maps
Z20LET Astra Turbo, into a Haynes
Roadster
Enter Your Details Here
http://www.facebook.com/EquinoxProducts for all your bodywork needs!
|
|
|
mtechmatt
|
| posted on 11/6/12 at 12:29 PM |
|
|
Hmm,
Is a bit odd, 21* is open circuit if calibrated to ford sensors.
I trust coolant is 100% ok?
Check the ground connection of the sensor, then try connecting to your coolant sensor and see what it reads.
If all connections are confirmed as 100% on, do the following:
1. Unplug the ECU
2. Read from the DB37 the resistance of the AIT sensor with recept to ground, and heat the sensor on the car, lighter beneath it, hot water etc, and
see if the resistance changes at the DB37. If it does the problem lies further back in the ECU.
You can test the correct signal is reaching the MS2 Daughtercard by unplugging the card, and reading the voltage at Pin 24 pof the 40pin DIP socket
with the ECU powered. You will see a voltage between 0-5v, based on the sensor temp. If this is OK, then the issue is the temo calibration on the MS2,
or the duahtercard itself...
Let me know,
Matt @ M-Tech
V4 Engine Management System | Online Shop |
Rolling Road Tuning | Motorsport
Preparation | Engine Packages | Throttle
Bodies
Check out what's happening in the workshop via our Facebook Page:
The Workshop
MEGASQUIRT ROLLING ROAD & BIKE CARB TUNING SPECIALISTS
www.mtechautomotive.co.uk
|
|
|
Ben_Copeland
|
| posted on 11/6/12 at 12:37 PM |
|
|
Hi Matt,
Yes coolant is fine, I'll recheck resistances but it's on GM sensors?! Not sure where open circuit for ford would come from.
Will update on checks tonight/tomorrow once I've done them 
Ben
Locost Map on Google Maps
Z20LET Astra Turbo, into a Haynes
Roadster
Enter Your Details Here
http://www.facebook.com/EquinoxProducts for all your bodywork needs!
|
|
|
mtechmatt
|
| posted on 11/6/12 at 12:38 PM |
|
|
Ah yes,
Sorry I'm thinking Ford, that is an open reading value for sure though, I think with ford (27K R4 and R7) you see 77* but its been ages since we
have used V3 boards!
[Edited on 11/6/12 by mtechmatt]
V4 Engine Management System | Online Shop |
Rolling Road Tuning | Motorsport
Preparation | Engine Packages | Throttle
Bodies
Check out what's happening in the workshop via our Facebook Page:
The Workshop
MEGASQUIRT ROLLING ROAD & BIKE CARB TUNING SPECIALISTS
www.mtechautomotive.co.uk
|
|
|
Ben_Copeland
|
| posted on 11/6/12 at 07:34 PM |
|
|
Matt, I get 3.08v which changes if you breath on it.
EDIT so say it now appears to be working. Although needs fine turning as its not 17oC but not far off.
[Edited on 11/6/12 by Ben_Copeland]
Ben
Locost Map on Google Maps
Z20LET Astra Turbo, into a Haynes
Roadster
Enter Your Details Here
http://www.facebook.com/EquinoxProducts for all your bodywork needs!
|
|
|
mtechmatt
|
| posted on 11/6/12 at 07:44 PM |
|
|
So was it a case of removing./refitting the MS2 card? Must of ben an iffy connection somewhere. Glad its all working, let me know when you are ready
for mapping 
V4 Engine Management System | Online Shop |
Rolling Road Tuning | Motorsport
Preparation | Engine Packages | Throttle
Bodies
Check out what's happening in the workshop via our Facebook Page:
The Workshop
MEGASQUIRT ROLLING ROAD & BIKE CARB TUNING SPECIALISTS
www.mtechautomotive.co.uk
|
|
|
Ben_Copeland
|
| posted on 11/6/12 at 07:57 PM |
|
|
quote:
Originally posted by mtechmatt
So was it a case of removing./refitting the MS2 card? Must of ben an iffy connection somewhere. Glad its all working, let me know when you are ready
for mapping
Sent you a couple of emails earlier... Let me know if you didn't get them?
Ben
Locost Map on Google Maps
Z20LET Astra Turbo, into a Haynes
Roadster
Enter Your Details Here
http://www.facebook.com/EquinoxProducts for all your bodywork needs!
|
|
|
mtechmatt
|
| posted on 11/6/12 at 08:09 PM |
|
|
Ah I'll get them tomorrow at work, will reply then..
Cheers
V4 Engine Management System | Online Shop |
Rolling Road Tuning | Motorsport
Preparation | Engine Packages | Throttle
Bodies
Check out what's happening in the workshop via our Facebook Page:
The Workshop
MEGASQUIRT ROLLING ROAD & BIKE CARB TUNING SPECIALISTS
www.mtechautomotive.co.uk
|
|
|
