vacuum problem

Reply Subscribe

Thread Tools

Search this Thread

Sep 24, 2008 | 05:25 PM

maydneb

Thread Starter

Driver School Candidate

Joined: Sep 2008

Posts: 2

Likes: 0

From: arkansas

vacuum problem

When my car warms up I start to lose vacuum and it starts to idle rough. dose anyone have any suggestions?

Sep 24, 2008 | 05:47 PM

Lexmex

CL Community Team

Joined: Apr 2004

Posts: 17,329

Likes: 210

From: Miami, Florida

Quote:

Originally Posted by maydneb

When my car warms up I start to lose vacuum and it starts to idle rough. dose anyone have any suggestions?

Welcome to the Club. You can try disconnecting the battery cables for a bit to reset the vehicle's computer and see if that helps, but generally when most of us have had this issue it has been the IACV (Idle Air Control Valve). This is the best thread I have seen on cleaning the IACV valve, https://www.clublexus.com/forums/sho...d.php?t=358579

Another possibility is the MAF sensor. Though generally when this issue pops up, the check engine light comes on, try https://www.clublexus.com/forums/sho...d.php?t=295546 (and see starting at post 7)

Sep 24, 2008 | 06:39 PM

maydneb

Thread Starter

Driver School Candidate

Joined: Sep 2008

Posts: 2

Likes: 0

From: arkansas

Thanks I'll try it and let you know how it works.

Sep 24, 2008 | 07:26 PM

salimshah

CL Community Team

Joined: Apr 2001

Posts: 16,559

Likes: 1,385

From: Austin, TX

Quote:

Originally Posted by maydneb

When my car warms up I start to lose vacuum and it starts to idle rough. dose anyone have any suggestions?

Do you have a gauge connected that tells you that the vacuum is being lost?
Finding the leak is hard as the vacuum lines run to various places. Old technique is to spray the connectors with carb-cleaner. The extra gas is sucked in and the rpm shoots up.

just investigate to make sure you have a vacuum problem and all other sensors like the IACV are working.

Salim