92 SHO coolant temp sensor

[bindery]

daughter bought a 92 SHO noticed that they had the fans hot wired to run all the time, so where is the temp sensor that controls the fans located and a picture would help ?

 

[AREA 91]

The temp sendor for the guage is on the left side below the thermostat housing. (1 wire hookup)

The temp sensor for the EEC is on the right side below the thermostat housing. (2 prong hookup)

There is also a 3rd temp sensor that is located in the hard line from the engine to the heater core. This is for the climate control.

 

[Phoenix]

Hotwired from the fuse box? If so , you may want to take a look at your CCRM , they go bad from time to time. Its right above the radiator under the plastic where your belt route is shown.

 

[bindery]

92 ford SHO coolant temperature location

no they didn't hot wire it from the fuse box they disconnected the fan plug and from another plug in that area they jumpered accross and kept the fans running all the time so when you shut the car off you have to go under the hood and pull the jumper out. So my next question is what controls the fans going on and off . I would either like to figure out what is wrong or be able to have the fans run off the ignition switch.The plug that has power all the time is a four connector and the fans are two connector.

 

[gmorrell]

The radiator fan is controlled by the engine control computer, based on what it reads from the engine coolant temp (ECT) sensor, the ECT has two wires, for reference, the temp sender for the dash gauge has one wire. Both sensors are near the thermostat housing under the throttle body.

The ECU sends a signal to the relay module (called the Integrated Relay Control Module, or IRCM) which turns on the rad fan.

The IRCM is located on the driver's side of the radiator support, right at the top near the upper radiator hose.

The IRCM also gets a signal to turn on the rad fan when the A/C compressor is engaged.

The IRCM also contains the ECU power relay and the fuel pump relay.

 

[bindery]

92 ford SHO coolant temperature location

I didn't realize it but it is a 94 DAH.Thanks for the reply so in your opinion which do you think would cause this problem and what is the best way to check them.
thanks

 

[No1nosrob]

If someone has a wiring diagram would be nice because my car is hooked up by a switch, and I hate havin to remember to flip the switch I would like to fix

 

[rubydist]

yes, but the diagram is huge so I cannot scan it. what is it that you would like to know?

 

[No1nosrob]

Does these sho's have single speed fans or multi speed ? And my fan is on it own system completely has its own fuse and relay was install really good not some crap job that I have seen on some cars I would just like to see how it ran originally... In short I want the fans to run automatically again. If any of this make sense to you lol don't know if I explained it well but I did find a diagram on a regular Taurus is that the same as the SHO

 

[rubydist]

the regular Taurus has somewhat different wiring.

there is a pair of hot wires that run to the ccrm (as well as grounds), and there is a signal wire from the pcm to the ccrm to pull in the relay in the ccrm to allow the fan to run, so the switched hot comes from the ccrm to the fan.

 

[No1nosrob]

Ok I will check it out , and do u know if the wiki sho website is still around can't seem to look at it . The front page loads up from time to time, but can't click on any links within the page,, don't know if it's my phone or not

 

[luigisho]

A lot of what looks like links are in fact inoperable there. It is still in operation but there is much to be done. I think I remember that the some of the early cars were single speed fans. I'll have to check. This topic was discussed recently somewhere on here if you want to run a search

 

[luigisho]

wiki site is down at this time. I know there has been a large migration of data and getting it to work properly recently. You can get better info on this at the v6 SHO yahoo groups mailing list.

https://groups.yahoo.com/neo/groups/v6sho/info

 

[No1nosrob]

Ok I will look into it in the next Couple days been getting a lot of rain my whole state got flooded out ... Lol

 

[rubydist]

ok
1992 SHO

ccrm
hot to ccrm - 38 - BK/O (4 places) (pins 1, 2, 10, 12)
cooling motor feed - 181 - BR/O (pins 3 & 4)
ground - 57 - BK (pin 16)
signal from pcm to engage cooling fan - 197 - T/O (pin14)

pcm
signal to ccrm to engage cooling fan - 197 - T/O (pin 55)

please note that I have found a couple of cases where the pin numbers were specified wrong, but the wire colors have always been right in my experience.
hope this helps!

 

[itwonder]

Your 1994 SHO uses the CCRM module to control the fan, and IIRC, a dropping resistor to get two fan speeds. If you are handy, an option for you, that is certainly better than what you have now, is to install a separate control for the fan instead of debugging what's wrong with the CCRM circuit. This requires a Four Seasons 84540 Tee heater fitting, which is installed in longer of the two water hoses that go from the oil cooler to the engine. Tip: Replace that with a longer piece of straight heater hose to make it easier. Install a NAPA FS118 fan switch in the fitting; (used on 87-93 2.3L Mustangs). The fan draws too much current to wire it directly through the switch. So you'll need to install a Bosch style 30/40Amp relay; the Absolute ARLSPACK2 from Amazon includes relays, sockets and fuse holder. There is an unused two pin connector near the MAF sensor where you can pick up switched 12V; wire that to the relay coil. The other side of the coil is wired through the FS118 to ground. The relay will close only if the ignition switch is on, and the coolant is hot enough for the FS118 to close. Use 10 ga. wire to wire from the battery, through the fuse holder, to the hot side of the FAN. The other side of the FAN goes to the normally open load contact on the relay. The common load contact on the relay goes to ground. A Google search will find wiring diagrams; this setup is used frequently for classic cars and hot rods. Downsides compared to the factory CCRM control: You will not have the two fan speeds, the fan will not automatically turn on when the A/C is on (but this can be accomplished with a second relay), and the fan won't turn off automatically when the car is going faster than 40 mph.

 

[rubydist]

the 92 SHO has a single speed fan - on or off. the later years had two speed fans.