Water Temp sensor and Fan Sensors

D2BBA · October 16, 2006, 09:12:11 AM

Quote from: ro284Well it\'s good to know the fans are working, when you overide the sensor are you connecting the relays direct to a supply or supplying the fans direct to test them? i would have thought a second hand Thermo would be ok, i used a 90 deg one S/H from RX The one i took outwas 106 deg, the wire from that to relay 3 had broken so rewired it, have you got a good earth on the engine?
good luck
Bob

Thanks for that guv, think i\'ll just run a wire directly to replay number 3, and save having to test along the length of the existing wire!

Will also give RX another call to see if he has a 2nd hand FC thermo in yet.

Ta
Chris

ro284 · October 16, 2006, 11:00:47 AM

While you are at it Chris you could run a wire to a switch in the cabin, to overide the Thermo in traffic in an emergency, i know you can switch air con on but i think you dont need cold air all the time, then when you get the FC thermo (mine rated at 90 deg. ) the fans actually come on at 100c and cool motor down to 95c and will do that all day, but hopefully the traffic jam will have then cleared! i\'m going to Tims this week to collect my mates rebuilt FD, anything i can do?
cheers Bob

D2BBA · October 17, 2006, 02:15:37 PM

Quote from: ro284While you are at it Chris you could run a wire to a switch in the cabin, to overide the Thermo in traffic in an emergency, i know you can switch air con on but i think you dont need cold air all the time, then when you get the FC thermo (mine rated at 90 deg. ) the fans actually come on at 100c and cool motor down to 95c and will do that all day, but hopefully the traffic jam will have then cleared! i\'m going to Tims this week to collect my mates rebuilt FD, anything i can do?
cheers Bob

Be great if you could enquire about a thermoswitch for me while your there matey! Probably one of those things that can be better sorted in person rather than by me over the phone!

I\'ll pay whatever Tim needs, plus postage and a drink for yourself!

Regarding the overide to relay 3, I\'ve currently got an overide switch fitted. Was sorted by my local auto electrician, however it must have a bad earth as it drains the battery! Thought it would be just as easy to remove it!

Give me a PM if you need guv!
Chris

ro284 · October 17, 2006, 07:00:20 PM

Waiting for the call to say \'come and get the car\' and i\'ll ask Tim when we were there, if i can get get one from him i\'ll PM you then,

QuoteRegarding the overide to relay 3, I\'ve currently got an overide switch fitted. Was sorted by my local auto electrician, however it must have a bad earth as it drains the battery! Thought it would be just as easy to remove it!

I think The thermo earths the wire from /to the relay to the engine when it switches on sensing the temperature it\'s rated at, i wonder if that wire is connected ok to Thermo, but this should only work if the ignition is on, perhaps the fan is wired to be on when the ignition is off, causing the battery to go flat, how long does it take for the battery to drain?
Bob

D2BBA · October 18, 2006, 11:51:34 AM

Hi fella,

Only takes a day or two and the battery is gone. Happened over aand over resulting in the need for a new battery. Aint tried with the new one, just disconect the negative at the mo.

Switch only works with ignition on if this helps (or could it be that the fans only come on with ignition???). Always have switch in off position when parked and only use switch when temps rise over what AC switch can handle!

Be great if you could get a thermo for me! May have to ask around if they havent called you by tomorrow afternoon though, as keen to get her back together on the weekend (even if weather is bad!)

Thanks mate

Chris

Rixio · October 18, 2006, 12:05:59 PM

http://www.mazdarotaryclub.com/forums/showthread.php?p=294499#post294499

Lots of usefull info on here

nikp · October 18, 2006, 12:25:02 PM

Yeah, but nothing that really covers the electrics of it.

D2BBA · October 18, 2006, 01:21:03 PM

Cheers Rixio,

Some good general tips there.

Will have to replace all of my std coolant pipes I think. Samco kit only came with two main rad pipes. If you know anyone that can supply the other bits or has the measurements to save me time, then give me a hola!

Chris

nikp · October 18, 2006, 01:24:10 PM

These guys don\'t do kits specifically, but they do stock lots of various silicone hoses. I\'ve used them before, they are good.

http://www.viper-performance.co.uk/

Rixio · October 18, 2006, 01:42:28 PM

I bought all original Mazda hoses because they are already pre-bent to fit properly...

D2BBA · October 18, 2006, 03:49:03 PM

Cheers lads, will have a look to see which hoses I need and which option will be the best for the cash!

Just the thermoswitch to go and I can start to reassemble No.5!......

ro284 · October 18, 2006, 04:58:28 PM

Hi Chris, had the call today to pick up my mates FD tomorow afternoon,from RX motors so will try and get a used Thermo off Tim , the one i got from him is 90 deg the one that came off my FD is a 106 deg, i think there is a 95 deg one availiable, not sure which model. if there is any choice at all which would you prefer? if it helps mine switches the fans at 100 deg (on my guage) takes it down to 95 in about a minute!
Bob

D2BBA · October 18, 2006, 05:12:44 PM

The lowest temp one available please matey. Mine was a 106 deg one, so anything is better than that! I would even take one of those again of a lower temp one couldnt be found!

Thanks again mate!

Just PM when you can with payment method and i\'ll get you my address. failing that if you want to call me from Tims im on 07714757481 and I could pay him direct!

Thanks

Chris