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Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: DMDRIFTING on July 02, 2009, 06:59:53 PM

Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: DMDRIFTING on July 02, 2009, 06:59:53 PM
Help!

When my engine comes up to temperature it chokes and cuts out!

I have a Power Fc and Commander, the commander is showing the Temperature of water and air, but as it warms up and stalls, the temperature display turns to ---- ???

I have installed a new live wire from the ecu to the water temp sensor and all reads ok when engine is cool!


Help!
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: DMDRIFTING on July 02, 2009, 11:04:46 PM
Is anybody here that might know?


Many thanks
Duncan
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: DMDRIFTING on July 02, 2009, 11:05:43 PM
Will try running a new earth to sensor tomorrow!
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: nikp on July 03, 2009, 12:34:40 PM
Sure you\'re taking the wire to the correct temp sensor? The coolant temp sensor is the one under the oil filter.
Title: Wire
Post by: DMDRIFTING on July 04, 2009, 01:32:40 PM
Had been pointed in the wrong direction by the RAC fella.
 
As you said, the one on the front is the coolant level sensor!
 
 
Spoken with Geoff and he\'s ordered a new Water Temp Sensor for me, arrives on tuesday!
 
 
Will update post when fitted
Title: Sensor!
Post by: DMDRIFTING on July 07, 2009, 11:46:07 PM
Grabbed the new sensor off Geoff today, fitted it tonight in the rain ha ha

Seemed ok so took it for a drive, same thing happening?????


Water Temp reaches 96 degrees on the commander and then it loses signal and displays ----  ????

Also displays ---- on air temp when this happens??????


Left it to cool, returned water temp displaying 40 degrees started fine and drove fine but just moved it back onto my drive..



PLEASE HELP ANY DIRECTION GREATLY APPRECIATED

Gonna try a standard ecu tomorrow..
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: Grizzly on July 08, 2009, 12:19:34 AM
I take it you have water in it?
Title: Water!
Post by: DMDRIFTING on July 08, 2009, 06:01:18 PM
Yeah dude!
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: DMDRIFTING on July 08, 2009, 06:05:25 PM
Update!

Have run a new earth/ground, from the temp sensor to the ground sensor, on the pinouts of the ecu!

When the car reaches 90 degrees it won\'t rev past 3000rpm and burbles and pops, will do this for a while then eventually cuts out??

Noticed this time that the boost display also dropped out to ----  ???

Gonna try the standard ecu now!
Title: Ecu!
Post by: DMDRIFTING on July 08, 2009, 08:52:17 PM
Hello all,

no ideas????



I have just replaced the Apexi Power FC with a Standard ECU and the problem is still there??


Have run a additional earth from the Water Temp Sensor to the \'Sensor Ground\' on the Loom! (Only spliced into)

Should I remove the old part of the loom?
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: civicboy28 on July 11, 2009, 11:06:10 AM
I have the same problem with the Water Temp Sensor. But mine drops below 0 degress and red -14 and then richens up the car so much it floods and fails up the plugs.
 
I also run apexi comander and see it on there.
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: DMDRIFTING on July 12, 2009, 11:03:57 AM
Its a nightmare.......
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: DMDRIFTING on July 12, 2009, 12:32:50 PM
How is the Apexi ECU Earthed?

Can i splice into the ecu loom grounds and run new earths for them?
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: Grizzly on July 12, 2009, 03:51:52 PM
A wile back a mate had a Problem a bit like yours (his Intermittently went off at highish rpm) his turned out to be a bad plug on the Sensor. After a bit of messing about we fixed it by cable tying the plug to the sensor.
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: DMDRIFTING on July 12, 2009, 07:18:57 PM
Mine is\'nt clipping in very well lol

If thats the problem im gonna cry and laugh :Hammer

Gonna cable tie it up right now and see what the score is
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: DMDRIFTING on July 12, 2009, 08:00:50 PM
Right, checked and double checked, its getting 5v to the clip and at the clip, the clip could not be rammed on any further aaaaaaaaargh

Its warming up to around 70 degrees cent now, and then losing the signal/display!
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: DMDRIFTING on July 12, 2009, 08:08:06 PM
Quote from: nikp;622658Sure you\'re taking the wire to the correct temp sensor? The coolant temp sensor is the one under the oil filter.

Just noticed you\'ve said the coolant temp sensor is under the oil filter???


Where?
Title: Water Temp Sensor - Displaying ---- on Commander??
Post by: DMDRIFTING on July 12, 2009, 10:41:50 PM
Have checked for continuity to the 4 grounds on the ecu 3 of them are good, and the pin out \'4d\' has bad continuity.

It is a brown wire does anybody know where this runs too?


Many thanks
Title: Fixed!
Post by: DMDRIFTING on July 30, 2009, 05:45:15 PM
New loom fitted by Tim @ RXMotors and Brand new water temp sensor and all is now fine wahoo 250 miles till mapping i cannot wait, roll on the Nurburgring
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