Electrical Engine coolant temperature sensor

twohawks777@cox · Mar 13, 2021

Which of the two pigtails plug into the engine coolant temperature sensor. One is the ETS and the other is canister purge solenoid. How can I tell the difference

HemiRick · Mar 13, 2021

I'm pretty sure they're not both the same.

twohawks777@cox · Mar 13, 2021

Both pigtails will fit the sensor on the ECT sensor and I no longer have a canisterpurge solenoid. I believe they both are two wire only differences is the colors of the four wires.

twohawks777@cox · Mar 13, 2021

I was hoping someone would simply look at theirs. Lol I have tried to look it and have been unsuccessful.

7991LXnSHO · Mar 13, 2021

I thought I knew where the color wire diagram of the engine is, but cannot find it. @jrichker @tmoss @General karthief can you help link or post it for @twohawks777@cox and me? I cannot find my 3 ring binder of printouts after the last move. Thanks.

edit, My car is hiding from the storm this weekend. It will not take much for us to be in the 20” of snow instead of the 4” of rain until Tuesday forecast area.

General karthief · Mar 13, 2021

I never noticed they were the same, one of mine is longer by a couple inches IIRC, that one I used for the purge solenoid, veryuseful.com is a good place to go for wire colors because difference in years, I may even have saved it,
Someplace
Maybe I'll look for it
Stand by,

General karthief · Mar 13, 2021

Veryuseful.com

I need to find that video.

7991LXnSHO · Mar 14, 2021

Thank you. I was looking. At tmoss's pages http://tmoss.efidynotuning.com and on our support tech threads.

jrichker · Mar 14, 2021

The following are diagrams courtesy of Tmoss & Stang&2birds

Complete computer, actuator & sensor wiring diagram for 91-93 Mass Air Mustangs

Complete computer, actuator & sensor wiring diagram for 88-90 Mass Air Mustangs

See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring; http://www.veryuseful.com/mustang/tech/engine/ Everyone should bookmark this site.[/b]

TFI module wiring for 94-95 Mustang GT
http://www.veryuseful.com/mustang/tech/engine/images/Mustang-94-95-IgnitionControlModule.gif

Complete computer, actuator & sensor wiring diagram for 94-95 Mustangs

http://www.veryuseful.com/mustang/tech/engine/images/94-95_5.0_EEC_Wiring_Diagram.gif

Complete computer, actuator & sensor wiring diagram for 91-93 Mass Air Mustangs

http://www.veryuseful.com/mustang/tech/engine/images/91-93_5.0_EEC_Wiring_Diagram.gif

Complete computer, actuator & sensor wiring diagram for 88-90 Mass Air Mustangs

http://www.veryuseful.com/mustang/tech/engine/images/88-91_5.0_EEC_Wiring_Diagram.gif

5.0 wiring diagram for Fuel Injectors, Sensors, and Actuators

http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif

Main body EFI wiring harness

http://www.veryuseful.com/mustang/tech/engine/images/mustangMainHarness.gif

Ignition switch wiring

http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif

O2 sensor wiring harness

http://www.veryuseful.com/mustang/tech/engine/images/mustangO2Harness.gif

Vacuum diagram 89-93 Mustangs

http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg

HVAC vacuum diagram

http://www.veryuseful.com/mustang/tech/engine/images/Mustang_AC_heat_vacuum_controls.gif

TFI module differences & pin out

http://www.veryuseful.com/mustang/tech/engine/images/TFI_5.0_comparison.gif

Fuse box layout

http://www.veryuseful.com/mustang/tech/engine/images/MustangFuseBox.gif

Mustang 5.0 Lights and Radio schematic, by TMoss:
http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxLights-Radio_diag.gif

87-92 power window wiring

http://www.veryuseful.com/mustang/tech/engine/images/mustang87-92%20PowerWindowWiring.gif

93 power window wiring

http://www.veryuseful.com/mustang/tech/engine/images/mustang93PowerWindows.gif

T5 Cutaway showing T5 internal parts

http://www.veryuseful.com/mustang/tech/engine/images/5_Speed_Cutaway_Illustrated.jpg

Visual comparison of the Ford Fuel Injectors, picture by TMoss:

http://www.veryuseful.com/mustang/tech/engine/images/Ford_Injector_Guide.jpg

Convertible top motor wiring http://www.veryuseful.com/mustang/tech/engine/images/mustang88VertTopMotorCkt.gif

Engine mounted fuel injector harness

http://www.veryuseful.com/mustang/tech/engine/images/mustangEngineHarness.gif

Location of the TPS, IAB, and the 10-pin connectors on a 5.0, picture by TMoss:

http://www.veryuseful.com/mustang/tech/engine/images/TPS_IAB_Pic.jpg

Starter circuit

http://forums.stangnet.com/attachment.php?attachmentid=21328&d=1080916057

Alternator diagram for 94-95 Mustangs.

http://www.veryuseful.com/mustang/tech/engine/images/Mustang-94-95-Alt.gif

twohawks777@cox · Mar 14, 2021

So after reading the electrical schematics the answer to my question is the pigtail with the green and black wires plug into the engine coolant temperature sensor. The other pigtail wires are red and yellow which plugs into the canister purge solenoid.

Mustang5L5 · Mar 14, 2021

The plugs are not the same. Only one will physicslly fit the ect. The charcoal plug is mirrored.

as you have determined, the one with the green wire is for the ECT. The other one won’t fit at all.

General karthief · Mar 14, 2021

Told ya so,
Na,na,na,na,na,na, hah!!

twohawks777@cox · Mar 14, 2021

They are definitely the same on my 89.

General karthief · Mar 14, 2021

I just looked at mine (89gt) and they are opposite.

90sickfox · Mar 14, 2021

twohawks777@cox said:
They are definitely the same on my 89.

Those are not the same dude.

slow84lx · Mar 15, 2021

90sickfox said:
Those are not the same dude.

Mirrored differently.

twohawks777@cox · Mar 15, 2021

Mine both definitely fit the same engine coolant temperature sensor.

90sickfox · Mar 15, 2021

I don't say this often. If this is your picture and you say either will fit..then...sir...you are an idiot.

The one highest in your picture is the plug for the sensor in your picture. Multiple people have told you they both won't plug into that sensor but you persist.

It's a simple geometrical puzzle. That corner on the sensor will not allow it to plug in....the pins inside the sensor also will not line up to the other connector.

If you are here trolling then congratulations. You've got what you came for. If you really believe they'll both plug in please take a short video clip....upload to youtube...and go to share...click clip board....open a response here....paste link from clip board...and let us see. ( I would apologize and give you a 100 dollar gift card to LMR )

One exception is if this isn't the car in the pic above..and you have the wrong temp sensor.

twohawks777@cox · Mar 15, 2021

View: https://youtu.be/lHIfH1ctA44

Mustang5L5 · Mar 15, 2021

I see the problem.

The second connector is damaged. It shouldn't be able to clip onto the ECT sensor like that if it was fully intact. The "nub" on the ECT is just fitting in the gap on the broken connector. You can see it in the shot below. That connector is just busted, otherwise it normally wouldn't fit.

Electrical Engine coolant temperature sensor

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I'd be looking at jacking under the house

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wanna catch the space herp

wonder how much it would cost to ship you a pair

wonder how much it would cost to ship you a pair

wanna catch the space herp

StangNet's favorite TOOL

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That is…until I whipped out my Bissell

wonder how much it would cost to ship you a pair

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Attachments

wonder how much it would cost to ship you a pair

Wasn't a pretty sight...and I've got big hands

clean it good before insertion

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Wasn't a pretty sight...and I've got big hands

Active Member

That is…until I whipped out my Bissell

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