A/C off, shifts great! A/C on, shifts late!
 

Why does my tranny hesitate to downshift when the A/C is running, but has no hesitation when it is off?

I'm referring to situations where I punch the pedal, and not gentle acceleration.

Shouldn't the electronics be compensating for the change?

Or is it a torque converter issue, rather than an ECU or ECT issue?

HELP!

My auto works fine, check ur TPS sensor? :\ lol

Which one? The WOT one?

I am the same damn problem. AC on, it doesn't want to downshift, if it does its too late :(

Dunno, I try not to WOT with A/C on, kills my gas. Plus with the extra load it feels crappy...

It doesn;t have to be WOT. Say you are going like 30mph, it will stay in 3rd gear w/ throtle at 75%. With the AC off in same situation, it will downshift to 2nd.

Yeah I know what you mean now, I figured that was normal.. I've been planning a 5spd swap since.

Great minds think alike :nod: :sprint:

I am going to ask a few Infiniti & Nissan techs to see what they say, as well as a couple of transmission shops.

hope i dont have that prob

the reason why i think that is happening is because the A/C draws power from the engine since it is powered by the belt and engine is driving it, so it would cause a little delay...i have also noticed in my last car i had which was an auto and it did the same thing...i could be wrong tho..just my theory