Engine revs when itís hot. - Club Lexus Forums

Go Back   > > > >
Log In 

Engine revs when itís hot.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-23-14, 12:04 PM   #1
davids75
Driver School Candidate
Thread Starter
 
Join Date: Dec 2012
Location: Ky
Posts: 6
Default Engine revs when itís hot.

On hot days if I get out of my car and get back in while the engine is still hot the car will start but it revs between 1500 and 2000 rpm. It just goes up to 2000 and drops back down to 1500 over and over. Any ideas what could cause this? It is a 92 SC400 with 102,000 miles.
davids75 is offline   Reply With Quote
Old 06-23-14, 02:19 PM   #2
Tabaka
Lexus Champion
iTrader: (8)
 
Join Date: Mar 2010
Location: Dale City, VA
Posts: 3,808
Default

Throttle position sensor or IACV
Tabaka is offline   Reply With Quote
Old 06-23-14, 08:41 PM   #3
GSXMike
Pole Position
 
Join Date: Oct 2003
Location: Arizona
Posts: 342
Default

For the noobs, AICV or IAC is short for idle air control valve, it is usually located on the throttle body. Test it with a multimeter.
GSXMike is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
High NOx - need expert tech help erubin2000 LS - 1st and 2nd Gen (1990-2000) 40 04-13-16 06:53 AM
So who else is an engine guy???? Aron9000 Car Chat 14 03-14-16 08:29 PM
Alternator and engine RPM/ECU? issues Caanon Performance & Maintenance 0 08-01-15 09:35 AM
Revs on cold start, nav and speakers drrishi LS - 3rd Gen (2001-2006) 0 06-23-15 06:47 AM
1UZ-fe wont pass 4k rpm Spawn88 Performance & Maintenance 22 05-01-14 07:19 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -7. The time now is 02:43 AM.


Copyright © 2000-2016 Internet Brands, Inc. All Rights Reserved