AC Cycling Effects the Torque Converter?

[frobie15]

So I when I changed the exhaust on the SHO I noticed that as the AC cycles, the Torque converter will unlock and then re-lock moments later.

Anyone??

 

[notbange]

Both of my v6 automatic cars have done this. A little annoying down the highway.

 

[SuperHO]

it's a common V8 issue that's solved via a tune.

 

[hawkeye18]

I think it's done to minimize the "felt" impact of the driveline shock caused by adding a load suddenly. When the clutch on the AC clamps down, it causes the engine to lose power momentarily, and if the TC is locked you will feel that. So basically it's a comfort measure.

 

[somedude_001]

I think it's done to minimize the "felt" impact of the driveline shock caused by adding a load suddenly. When the clutch on the AC clamps down, it causes the engine to lose power momentarily, and if the TC is locked you will feel that. So basically it's a comfort measure.

That sounds like it was a band-aid fix for a poorly designed compressor.

 

[hawkeye18]

That sounds like it was a band-aid fix for a poorly designed compressor.

The SHO is full of band-aid fixes across all generations.

 

[SHOZ123]

Actually the compressor is a very good and efficient one. The TC issue will happen when the Climate Control is in an AC mode, not necessary when the AC is cycling.

 

[slowshow]

Which is worse to feel, a slight loss or "pull" in power from the motor, or a **** of an unlocking tc? Someone at Ford gave a 5 year old a laptop and said program a ECU for a GenIII please...

 

[somedude_001]

Which is worse to feel, a slight loss or "pull" in power from the motor, or a **** of an unlocking tc? Someone at Ford gave a 5 year old a laptop and said program a ECU for a GenIII please...

in 94 and 95 when they were designing the SHO ECU I am not sure if there were too many 5 year old lap tops around. just something to think about.

 

[SHOZ123]

Ford has some of the best PCMs out there. Though I do feel the TC thing was stupid.

 

[slowshow]

in 94 and 95 when they were designing the SHO ECU I am not sure if there were too many 5 year old lap tops around. just something to think about.

Even better, they told them to use a mac...

 

[frobie15]

Wow, that's annoying. I wish there was something that could be done to correct it! Maybe a direct switch to the torque converter? I know on the GM 700R4's you could splice into the plug and run a switch to lock it or unlock it whenever you want.

It wasn't even noticeable until I cut the mufflers off! HAHAHAHAHAHA

 

[SHO Dude]

It can be fixed with the proper tuning. It takes a credit card and about 8min to complete the installation.

Give us a call, we'll tell you all about it.