93 fd thermoswitch - RX7Club.com - Mazda RX7 Forum

New Member RX-7 Technical Post your first technical questions here, in an easy flame free environment, before jumping into the main technical sections.

93 fd thermoswitch

Reply

 
 
 
Old 02-12-18, 10:36 AM
  #1  
Junior Member
Thread Starter
 
Join Date: Oct 2017
Location: Manchester england
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
93 fd thermoswitch

Hi Iíve finally got my car back on the road Iíve noticed that Iíve been getting coolant temps of around 180-210 f which I though was quite high so I took at look at a few things and noticed my thermoswitch wasnít plugged in and there is a wire behind it with no plug on which is black with a solid red line is this the correct wire for that plug and how would I go about rewiring it?

Caine1989 is offline  
Reply With Quote
Old 02-13-18, 08:03 AM
  #2  
Viable fossil
iTrader: (10)
 
Sgtblue's Avatar
 
Join Date: Oct 2003
Location: Mid-west
Posts: 9,659
Thanked 76 Times in 65 Posts
* Even though your ambient is probably pretty cool where you live I don’t think those temperatures are worrisome. Our North American S6 FD’s factory thermoswitch threshold was 105 C. (220 F.) But I’d get it fixed before summer temps arrive.
* Can’t recall the wire color off-hand but that’s almost certainly the lead for the missing thermoswitch connector. The small gauge and heat made them fragile and easy to break right at the connector. You’ll have to source a used one. But the good news is that if the Euro models were the same as ours, the S5 (89-91) FC connector is the same. In fact many of us change out the FD thermoswitch for the S5 FC thermoswitch because it’s threshold temp for low-speed fans is 96 C. (205 F.). A bit more margin for a low cost plug n play modification.
Sgtblue is offline  
Reply With Quote
Old 02-13-18, 08:30 AM
  #3  
Junior Member
Thread Starter
 
Join Date: Oct 2017
Location: Manchester england
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Cheers for the reply i sent an email to the person that mapped my car pip Gardner here in the uk and he explained to me that he mapped the radiator fans to come on at certain temps using the apexi power F.C. I think before it starts to get warmer Iím going to stick a new thermostat in and buy a aluminium radiator and flick the system that will hopefully keep it cooler and
Caine1989 is offline  
Reply With Quote
Old 02-13-18, 09:07 AM
  #4  
Viable fossil
iTrader: (10)
 
Sgtblue's Avatar
 
Join Date: Oct 2003
Location: Mid-west
Posts: 9,659
Thanked 76 Times in 65 Posts
Well the PFC explains why the connector was never replaced and your temps were still OK.
Sgtblue is offline  
Reply With Quote
Old 02-13-18, 10:02 AM
  #5  
rotorhole
 
Join Date: May 2017
Location: your mothers
Posts: 699
Thanked 63 Times in 61 Posts
the black sensor there is not the thermosensor, it is the auxiliary fan switch.

those temps aren't abnormal, unless the cars fan turn on temps have been lowered, which they really should be since you have a PFC.
insightful is offline  
Reply With Quote
Old 02-13-18, 10:36 AM
  #6  
Viable fossil
iTrader: (10)
 
Sgtblue's Avatar
 
Join Date: Oct 2003
Location: Mid-west
Posts: 9,659
Thanked 76 Times in 65 Posts
^ Correct and thanks. For posterity the black one is the thermoswitch which inputs the fans. I repeated the error. The green sensor is the thermosensor for ECU input.
Sgtblue is offline  
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
3GRX7
3rd Generation Specific (1993-2002)
10
10-17-06 07:02 AM
NOSkidRcr
3rd Generation Specific (1993-2002)
20
03-24-04 10:05 PM
KZ1
3rd Generation Specific (1993-2002)
14
05-17-02 04:24 PM
supercell
3rd Generation Specific (1993-2002)
1
02-17-02 01:24 PM
morph000
2nd Generation Specific (1986-1992)
0
09-01-01 03:42 AM


Thread Tools
Search this Thread
Quick Reply: 93 fd thermoswitch


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: