Car question
 

Sometimes when I'm driving, my engine's rpm keeps shooting down and up whenever I take my foot off the gas.

Example:

Accelerate to 45. 1,500 rpm @ 45 mph. Take foot off gas. The rpm shoots down to 900. The car slows down dramatically, rpm goes back up to 1,100. Car doesnt slow down as fast.

Thing is this doesn't always happen, just sometimes. The car is 10 years old and has 96,150 miles on it.

What could be wrong?

That sounds weird, if its automatic check the transmision fluid it might be low.

Could be the transmision fluid, or you might need a new transmision. 96,000 isn't exactly new.

Surely the problem is gremlins.

Even when it only happens some of the time? Other times it works smootly as if nothing's wrong.

What car are you driving? What year?

1996 Lexus LS 400

What else would it be? Maybe a messing up computer chip? *shrugs* My friend's dad is a master mechanic but I'm not gonna ask, baha.

Btw, you can google it and find out the problem probably.

Maybe sometimes the transmission is under enough pressure that the oil is flowing fast enough that the transmission can shift properly, sometimes maybe the oil isn't moving fast enough/ under enough pressure. Come on sov its not hard to check oil levels...

its normal for a char, if ur car stays at high rpm even after u released the gas pedal, then there is something wrong wid it.

Like I know shit about cars. Took it to the garage though. They inspected it and said all the fluids minus the oil were good. I got my oil change and now I havnt' had the problem since. It's been only 3 days though. We'll see.

I guarentee you it's not normal. I don't remember it happening last fall, and no other car I have ever driven has slowed down that significantly just by taking your foot off the gas.

Does it accelerate slower than normal?

Can you tell that it actually downshifts back into first?

Talk about double post...

It shouldn't downshift hard enough to be able to feel it.

I'm wondering if it's downshifting to first though.

Double posting is allowed as long as I am replying to two different posts, both of which can't be my own. And it can't be spam.

Iunno. Looks like the problem is solved. Thanks guys!

Good luck. Hopefully it won't come back.

Buy a mercedes and this wont' happen :P.

ya, it costs 1000000% more o_O