Is it better to leave an auto trans in D while waiting at a stoplight? Or pop it into Neutral? Any thoughts?

 

rpms are higher in nuetral than sitting in drive.....the only thing I can think of that would matter...I'd leave it in drive

 

is this your first car or something?

 

I can't imagine why it wouldn't be ok to leave it in drive at a stop light. If your at a standstill for while, put it in neutral so your leg can take a break. Is there a problem with your car slipping forward when your foot on the brake at a dead stop? Odd question...........

 

No.

 

Let me explain...

I was just reading up on stall converters yesterday and while I was at a long stoplight this afternoon, I was thinking about the engine idling and the flywheel spinning, yet I'm holding down the brake pedal and there's no forward motion. The torque converter is operating below the stall speed so there's very little torque transfered to the driveshaft. All this time, there's a slight load on the engine because the transmission is in gear but the energy is simply wasted as it is converted into heat in the torque converter.

But if I pop the transmission into neutral, the load is removed from the engine and it idles freely. Isn't this less strain on the transmission? Doesn't this mean the liquid coupling is not actively allowing the slip? It's just doing nothing? Isn't it less strain on the engine too? If so, then wouldn't it be better to shift into neutral at long stoplights?

Tranny experts, can you fill in?

 

im thinking about the whole schematics of the auto tranny...wouldnt it just spin the torque converter? like the brakes would stop the back half of it, but the engine would spin the front half, just making it spin freely but not do any work. dammit now you got me wondering, but anyway, i doubt 1000 or less rpms is causing any major strain on anything.

 

The aode is fine standing in D.. thats why the Torque Converter was made Depending on the size of stall it shouldn't be anything to worry about.... Leaving it in D may just pull on your amps a bit and thats it, I throw mine into N at almost every stand still but thats just because of my pull on my alternator

 

Just leave it in D.

I leave my C4 in drive and i have a 2,000 stall.

Not had any issues.

 

Bwahahahahaa!

I had to read that twice. I was wondering what leaving it in D had anything to do with my armpits. I read it again, then I saw 'pulling on your amps'.

Ok, it's 7:40 AM on a Sunday. I think I'm awake now.