Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 12-09-2015, 11:30 PM   #1
chezheadsupra
Stock
 
Join Date: Apr 2011
Location: dallas TX
Posts: 1
chezheadsupra is on a distinguished road
Question Temp gage sender - still working after disconect

I have a 87 TURBO that Ive had since new !


I have a strange problem with the TEMP sender gage on the Thermostat housing . If im not mistaken .. the sensor that returns signal to the DASH is a single metal spade that fits on a single spade on the sensor. the round blue one is for AC thermostat fan on radiator, the square green on side is for the ECU on startup and control. and the top one is the Cold start Time sensor ..

My question is this .. after burping my system after hearing this gurgling sound for years.. and having the scare of a BHG symptoms .. ( I don't !!)

I now have NO AIR in my system to cause false reading on spiked temp ( happens when gas( hot steam ) is touching thermistor and not the cooler water.... for you non -techies.

this is the puzzle :

When I disconnect connector from the sensor .. THE TEMP INDICATION REMAINS constant .. IT DOESNT FALL DOWN TO ZERO. !!

I have not started it cold w/o it connected and then connected after word. so I don't know if it works in reverse. But

If this was the sender to the gage it would read nothing .. so what's UP >>???

Is the Jedi FORCE sending a signal with no copper wire connected ??
chezheadsupra is offline   Reply With Quote
Old 01-02-2016, 01:35 PM   #2
yale
Stock
 
Join Date: Oct 2015
Location: CT
Posts: 26
yale is on a distinguished road
Default

The Repair Manual wiring diagram shows the temp sensor wire leading to the gauge to be yellow with green stripe. I just confirmed that color scheme on my '87. It is the single spade connection and low on the thermostat housing.

My connection fell off last month and my gauge didn't read, so I know that wire does control the gauge in my case.
yale is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
oil pressure and temp gages not working Ranma MKIII Supra 1 11-17-2011 09:42 PM


All times are GMT. The time now is 03:09 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86