[kenfowler]

so driving the car around last night, I see that my idle RPM is sitting at about 2k.

There were times where it got to the standard 1k but would generally hang out around 1.5-2 rpm. I was a little uncomfortable with that and did my forum research. There isn't much info on removing and cleaning the throttle body. I'm going to clean the MAF again and see if that helps, but want to check out the throttle body as well.

My car is a 2005. Any advice is appreciated.

 

[turbophil]

do you have adequate play in the throttle cable so that it's not preventing the throttle from closing?

-Phil

 

[GatorMS_Service]

cable throttle bodies had issues with the IAC on the bottom of them. Usually it will cause a code to pop "idle higher than expected" but not always. I have had some luck removing the throttle body, removing the coolant plate, and gently cleaning in there with brake clean. while I have the throttle body out I also open the butterfly and clean the bore.

best of luck!!

T.J.

 

[kenfowler]

Thanks guys. i haven't inspected it all too much. It started raining on my yesterday which ruined my investigative work.

I'll check it all out today. Let's hope that cleaning it works!

 

[Vulcan Grey]

Did you read this?

http://www.lotustalk.com/forums/f25/throttle-body-design-flaw-leads-sticky-throttle-high-idle-98214/

 

[Bryker7]

Probably the TB flap getting hung up. Or a vacuum leak.

 

[sturgeongeneral]

I've had a high idle due to a leaking fuel injector o-ring.

 

[bri3d]

Did you read this?

http://www.lotustalk.com/forums/f25/throttle-body-design-flaw-leads-sticky-throttle-high-idle-98214/

That's hilarious - my 1997 5VZ-FE 4Runner had the exact same problem with the exact same solution... I guess Toyota don't change their throttle body engineering too often rotfl

To verify that's the problem, push/pull and turn on the throttle while the car is running. You should feel the shaft move to one side or the other, and then the idle should settle back down to normal until the throttle is opened again.

You can take the shaft/spring assembly apart and add washers on either side of the spring assembly, depending on which way your flap needs to go. At that point you're basically relying on the spring holder to perform the role of the big bracket ChrisH added. It's probably not as solid but it did work for me.

Agree that you should still check your IACV - it can't hurt to clean those and they are known to fail. Be careful that you orient the throttle body so that whatever cleaning fluid you blow in there is dripping out - otherwise, you'll just send gunk deeper into the IACV.

Cleaning the TB will also help - sometimes, gunk around the flap causes it to shift to one side and makes the wear/stiction issue worse.

 

[kenfowler]

do you have adequate play in the throttle cable so that it's not preventing the throttle from closing?

-Phil

This may be the issue. I've been so busy with work lately I didn't get to looking at things in depth.

I had some trouble reproducing the issue, but then it happened again.

I tapped on the gas pedal and it settled the rpm back down to 1,000.

Each time it happens, I can fix the issue by tapping the gas pedal. I'm thinking the cable is getting stuck?

 

[Tornado]

What did you find was causing this issue?

 

[LastToy]

I've had the same issue on my 2005...

For ~2 years, the car would idle ~1k RPM too high only after a long drive on the highway or after a session on the track. Just a blip would bringing it back down to the normal ~1k RPM. However, it's been happening more frequently recently and I finally got a check engine light, so I brought it to a local shop to see if they can fix it. They said they cleaned the throttle body thoroughly and it's now fixed. Just picked up the car today and it's not fixed. It now idles at 2k-2.8k all the time and blipping the throttle only works part of the time. :-(

A Lotus friend of mine said he had same issues with his car and had his throttle body replaced a couple years ago.

Can I just buy a Toyota Celica GTS throttle body to replace the current one or are there some additional parts that are specific to the Lotus set up? Do I need to worry about any minor parts that I have to order along with the throttle body?

I'm good with my hands but know very, very little about working on an engine. Do you think someone like me should try to replace it myself? The car is parked in a parking garage since I live in the city.

Thx.
J