AC and WOT

JD1964 · Jul 16, 2018

Consider that all is functioning as designed by Ford.

On a 92 5.0 LX, does the ac compressor get interrupted and cut off at wide open throttle?

90sickfox · Jul 16, 2018

Yes it does. On my car I accomplished this by using one of my nitrous throttle switches. When I press the gas, more than 80 percent, the switch sends a ground signal to the WOT cut relay turning the AC compressor off. When I get off the switch AC functions as normal.

JD1964 · Jul 16, 2018

90sickfox said:
Yes it does. On my car I accomplished this by using one of my nitrous throttle switches. When I press the gas, more than 80 percent, the switch sends a ground signal to the WOT cut relay turning the AC compressor off. When I get off the switch AC functions as normal.

But mine will do it in stock form?

I understand you modified for a purpose. That confused me into thinking I need to modify something to make it work. Can you clarify?

Mustang5L5 · Jul 16, 2018

I'm confused by your question.

On the pass side fender, under where a MAF would be located, is the WOT relay. When you give er the beans, the relay should interrupt the engagement of the A/C compressor and temporarily turn it off. IIRC, the location the vents blow changes as well. If you have it on Vent, it will go to the floor/defrost.

JD1964 · Jul 16, 2018

Mustang5L5 said:
I'm confused by your question.

On the pass side fender, under where a MAF would be located, is the WOT relay. When you give er the beans, the relay should interrupt the engagement of the A/C compressor and temporarily turn it off. IIRC, the location the vents blow changes as well. If you have it on Vent, it will go to the floor/defrost.

This explanation is clear to me. Thanks

90sickfox · Jul 16, 2018

The WOT relay will do it on it's own in stock trim. I run Mega Squirt so my car is a little different. Sorry for the confusion.

JD1964 · Jul 16, 2018

90sickfox said:
The WOT relay will do it on it's own in stock trim. I run Mega Squirt so my car is a little different. Sorry for the confusion.

No worries. So you use the factory ac cutoff to turn nitrous on above 80% throttle?

90sickfox · Jul 16, 2018

No, I use a nitrous switch to trigger the ac cut off. My car doesn't use the factory ECU. Didn't know if you needed a " work around " for ac cut off.

My car is turbo now so no need for the Nos. I could've used an output on my MS but I want to use them for other things....like water meth injection.

Noobz347 · Jul 16, 2018

90sickfox said:
No, I use a nitrous switch to trigger the ac cut off. My car doesn't use the factory ECU. Didn't know if you needed a " work around " for ac cut off.

My car is turbo now so no need for the Nos. I could've used an output on my MS but I want to use them for other things....like water meth injection.

A little cooling shot never hurt anybody.

JD1964 · Jul 16, 2018

I’d like to infiltrate my cruise control system and create a means to achieve a manual high idle. Flip a switch and get a 1500rpm idle for instance. For sitting in traffic with all accessories on. Also helps increase coolant flow in those high heat stuck in traffic conditions.

Any ideas on how to do this? There’s gotta be a way to make the cc servo pull on the cable a given amount.

I had done it before on GM vehicles with qjet carbs by connecting the high idle solenoid to a toggle switch. But Foxbody doesn’t have these idle solenoids.

General karthief · Jul 16, 2018

Why can't you use one on a tb? Seems like it would be easier.

JD1964 · Jul 16, 2018

General karthief said:
Why can't you use one on a tb? Seems like it would be easier.

Actually I need to take a look and see how something would mount near the throttle body linkage. But I was figuring the CC motor and cable are already there and maybe theres a way to utilize them.

RangerJoe · Jul 16, 2018

I would think there would be a way to manipulate the idle air control valve.

joe

JD1964 · Jul 16, 2018

RangerJoe said:
I would think there would be a way to manipulate the idle air control valve.

joe

Might that trigger CEL?

RangerJoe · Jul 16, 2018

John Dirks Jr said:
Might that trigger CEL?

No clue. I would only think it would if the voltage parameters were out of range??? I think the IAC sees a ground to make it function, but I could be way off on that. You could check a schematic and see. If it did, you could put a diode in the ground signal wire to keep from back feeding in the ecu, then splice it a ground wire with your flip switch.

If it sees a positive trigger from the ecu, you could do something similar.

Joe

Blown88GT · Jul 21, 2018

90sickfox said:
The WOT relay will do it on it's own in stock trim. I run Mega Squirt so my car is a little different. Sorry for the confusion.

Megasquirt can be modified to work the WOT relay. Mine does now.

90sickfox · Jul 21, 2018

Blown88GT said:
Megasquirt can be modified to work the WOT relay. Mine does now.

That is true. However, I didn't want to lose an output for it, nor am I computer savvy. The latter being the most important reason. Lol

Blown88GT · Jul 21, 2018

I wasn't using any of the outputs. IIRC, only needed addition of 2 wires inside the MS.
I designed computers for a living.
This is one example of many...

...an ECU on steroids & this baby has 2 or 4 identical ones (depending on variation).

Jarhead67 · Nov 24, 2018

Does anybody have a picture of the WOT on an 86 GT, and maybe it's location? Do wires from the WOT cross over to the drivers side of the car and connect with the AC clutch harness?

AC and WOT

JD1964

there is enough sticking out to grab on to

90sickfox

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

JD1964

there is enough sticking out to grab on to

Mustang5L5

That is…until I whipped out my Bissell

JD1964

there is enough sticking out to grab on to

90sickfox

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

JD1964

there is enough sticking out to grab on to

90sickfox

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

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

JD1964

there is enough sticking out to grab on to

General karthief

wonder how much it would cost to ship you a pair

JD1964

there is enough sticking out to grab on to

RangerJoe

I leave the horn on while driving

JD1964

there is enough sticking out to grab on to

RangerJoe

I leave the horn on while driving

Blown88GT

90sickfox

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

Blown88GT

Jarhead67

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