Honda Civic Performance - JDM Discussion Engine tech, forced induction, springs, shocks, brakes, tires, etc.

Engine Revs When Idling

Old 07-Apr-2005, 06:44 PM
Registered User
Thread Starter
Join Date: Mar 2005
Location: Digby Nova Scotia
Posts: 23
Engine Revs When Idling

Can anyone tell me why my engine when I'm idling is revving upto 2000-2500 rpm even after it shoudl be done warming up I dunno if its the Throttle Positioning Sensor or it could be somethign else on the engine btu I have a B20B egine in a 93 h/b Si And the ECU is from the 1.6 now both are B series engines but woudl this matter????
LiquidMetal is offline  
Old 07-Apr-2005, 07:05 PM
-- site donator --
iTrader: (1)
Join Date: Mar 2004
Location: the hammer
Posts: 7,038
Do you have any CEL's?
check for vacuum leaks. Take some carb cleaner and spray it on all of the vacuum lines and around intake manifold gasket and throttle body gasket. If the rpms go up then the carb cleaner has entered the engine, pay close attention to where you are spraying if the rpms jump.
Also could be the Idle air control valve on the back of the intake manifold. Try checking the voltage at the TPS with a volt meter. It should be 0.5 volts at closed throttle and should slowly raise according to throttle position to 4.5 V at wide open throttle.
I would think that using a 1.6L ecu wouldn't be ideal for a 2L engine. Unless you are using a chipped p28.
zeeman is offline  
Old 27-Apr-2005, 07:58 PM
Registered User
imported_bigmacks's Avatar
Join Date: Aug 2004
Location: penetang
Posts: 139
i`d go with the vacumm leak
imported_bigmacks is offline  
Old 27-Apr-2005, 09:09 PM
Registered User
Join Date: Sep 2004
Location: scarborough
Posts: 218
try cleaning the eac and the iac valve...... i had the same problem and it went away after cleaning.......learned this from other members on here
imported_BWK is offline  
Related Topics
Thread Starter
Last Post
31-May-2010 04:07 PM
Honda Civic Performance - JDM Discussion
23-Apr-2006 01:53 AM
Honda Civic Performance - JDM Discussion
07-Jul-2005 07:55 PM
Honda Civic Performance - JDM Discussion
16-May-2005 08:47 PM
06-Oct-2003 05:24 PM

Thread Tools
Search this Thread
Quick Reply: Engine Revs When Idling

Contact Us - Sitemap - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.