How can I get this good of gas mileage?!?

[AshNazg]

Ok... I bought my '93 240sx SE a month ago or so, it being my third car. I had a '91 Integra before that, then a '91 Celica. The Celica and the Integra both got like 250 miles out of a tank of gas, and my 240 gets about 315 out of one tank of gas, but the tanks are about the same size! What's odd is that the Integra was a 1.8L engine, and the Celica a 2.2L engine. So now I have a bigger engine but get better milage?! This couldn't just be cuz of gearing could it...?

One thing which I thought it might be (dunno if it's right though) was I was wondering if the 240 shuts a cylinder down or something when it's not using it. Sometimes I'll be on the freeway crusing along at 2800 RPMs in 4th (I have an auto ) and I'll give it a little gas and the car will like "kick in" like and bump up to 3000 RPMs quickly. That's obviously not a downshift. Seems like it's shutting something down and when I give it a little gas it turns it back on. A cylinder maybe? This why gas miliage is so great? Or am I retarded? :pface

[Touchdown038]

Nope, there's no cylinder shut-down action... I think you'd be hard pressed to find that on ANY four-cylinder engine, seeing as how the only place I've seen it is on Cadillac's new V-16. As for the RPM increase, I wish I could tell you more, but I don't know much about the auto transmission, so I have no idea

[89240sx]

I have an 89 hatch and mine does the exact same thing... I wondered what it was myself... but i guess its just power ??

[AshNazg]

Doesn't excatly feel like just power cuz it's so sudden ya know? It's not like a gradual increase in RPM... i dunno! Any ideas?

[89240sx]

I dont know but it does it with my auto and it jumps up really fast and like you said it does not downshift... maybe the overdrive turns off??

[yellow_jacket]

The converter unlocks.

[AshNazg]

Converter?

[Nismo_Freak]

Stall Converter... go to howstuffworks.com and learn how the automatic transmission works. It's basically like a clutch for the automatic.

[nlzmo400r]

Stall Converter... go to howstuffworks.com and learn how the automatic transmission works. It's basically like a clutch for the automatic.

damn you for answering that, really wanted to answer this one and seem smart, but yes,its the stall converter, lots to explain, so go to the previous link

[goshoryuken]

Ownage . . presented to you by the masterz..

[nlzmo400r]

yea figures, i always read the thread starter's question going 'hmm, i know this but how could i explain it??' and by the time i read the last post, its already been answered

[trpower7]

Dang it!!! People answering before I can........

[corn322]

heh heh, he said "stall converter"