Engine RPM Problems

[memphis_raines]

Here lately when I get up to highway speeds (50-80 MPH), the engine RPM's go up as the car accelerates like it's supposed to. But when I let off the gas and slow down, the engine RPM's stay up and won't go down until I hit the brake. Any ideas on what might be causing this?

[97rs4life]

Re: Engine RPM Problems

so it isn't downshifting? or is it acting like the cruise is on and staying at the same speeds

[Vanquish]

Re: Engine RPM Problems

Do you have your cruise control engaged when you do this, or notice your cruise control light blinking in the background( do we even have a cruise control light?).

It could also be a possible stuck throttle cable or a transmission in need of service.

[memphis_raines]

Re: Engine RPM Problems

I very rarely use the cruise control, so it pretty much happens all the time.

[Vanquish]

Re: Engine RPM Problems

I'm guessing you have an automatic. So my question to you is, when is the last time you have had it flushed and filled and changed the filter in it?

[RadRacer]

Re: Engine RPM Problems

so it isn't downshifting? or is it acting like the cruise is on and staying at the same speeds

It's not shifting into the next gear. Sounds like it's shifintg just fine down into 3rd or 2nd, but then get stuck in that gear.

I'd say it's time for a tranny tune-up. Flush it, new filter, everything.