[TR] Hi RPM's

[Dave1massey at cs.com]

In a message dated 6/5/2010 9:11:55 AM Central Daylight Time, 
tr4a2712 at yahoo.com writes: 
> History: I start up the car &everything is great on the instrument 
> readings-
> Idle= 850-900 RPM. After the engine runs for about 1/2 hr. doing 40+ MPH- 
> tach
> is reading 2,000->3,000 (depending on my driving speeds). When I then come 
> to
> a stop light, sign, etc. the RPM's stick at 2,000. I then 'blimp' the gas
> peddle (a quick accretion &then drop the pressure on the gas peddle) the
> RPM's then drop down to idle speed =850->900. 
> 
> Question: What's causing this to happen?
> 

Check for throttle shaft wear.  Grab the shafts and see if they will 
wiggle.  If there is too much play the throttle plates don't return to the same 
position and will bind up off-center creating a larger opening causing a high 
idle.

Dave