Temp sending Unit issue
09-07-2014, 06:57 PM
#12
Thread Starter
Join Date: Sep 2014
Location: Qc
Posts: 14
Ok. So the female wire harness receiver just slips over the threaded bolt. Once that is replaced if it still doesn't work it pretty much has to be the cluster gauge. Do you know if this TSU draws any power through the fuse box? And if so, which fuse? Because this Mustang has some fusebox issues and before I start buying parts... but if it was a fusebox issue, the ECU wouldn't throw a code right.
09-08-2014, 08:50 AM
#13
6th Gear Member
Join Date: Mar 2010
Location: Wisconsin
Posts: 5,061
I'm going to agree with dawson, disconnecting the temp gauge sending unit wire should not throw a code. That wire goes directly to the guage and only the gauge reads off it. The ECM takes no info off it.
And that link you posted is for the correct sending unit. Is yours different? Maybe po had aftermarket gauges and that's where he was coming off for temp readings. You may have an aftermarket sending unit in there, which won't work with the stock gauge.
And that link you posted is for the correct sending unit. Is yours different? Maybe po had aftermarket gauges and that's where he was coming off for temp readings. You may have an aftermarket sending unit in there, which won't work with the stock gauge.
09-09-2014, 06:59 AM
#14
Thread Starter
Join Date: Sep 2014
Location: Qc
Posts: 14
I agree with you guys -- What code can it possibly be throwing (in an '89 Mustang)? In today's cars for sure but 25 years ago??? Weird because as soon as I unplug -- CEL --- and as soon as I replug --- CEL gone.
Orangepeel, you just added another piece to the puzzle -- aftermarket TSU won't always work with OEM dash guage. Is there a simple way to test both the TSU and Temp Gauge? Without removing the dash & cluster?
Thanks guys!
Orangepeel, you just added another piece to the puzzle -- aftermarket TSU won't always work with OEM dash guage. Is there a simple way to test both the TSU and Temp Gauge? Without removing the dash & cluster?
Thanks guys!
09-09-2014, 07:20 AM
#15
5th Gear Member
Join Date: Jul 2012
Location: ohio
Posts: 3,628
Im still waiting for you to find out what code its throwing.
If the cel came on then the computer stored a code , regardless of if the light went back out.
Sorta tells me that that wire is some how crossing with a sensor wire someplace.
If the cel came on then the computer stored a code , regardless of if the light went back out.
Sorta tells me that that wire is some how crossing with a sensor wire someplace.
09-09-2014, 07:31 AM
#16
6th Gear Member
Join Date: Mar 2010
Location: Wisconsin
Posts: 5,061
You can test the sending unit with a multimeter, if you know the readings its supposed to give at certain temps, which I'm not smart enough to know off hand. But a little digging here or Google and you'll find it.
And I don't know about testing the gauge itself, but I'd assume you'd add a set amount of current to the circuit and gauge should work. But that's just a guess. I'd just stick to checking the sending unit, much easier.
And I don't know about testing the gauge itself, but I'd assume you'd add a set amount of current to the circuit and gauge should work. But that's just a guess. I'd just stick to checking the sending unit, much easier.
09-09-2014, 08:10 AM
#19
5th Gear Member
Join Date: Jul 2012
Location: ohio
Posts: 3,628
You don't need a code reader. Just use a paper clip or volt meter.
http://sbftech.com/index.php/topic,2471.0.html
http://sbftech.com/index.php/topic,2471.0.html