Idle Question??

[GsxProject]

After driving my car and after putting on a afpr my idle sits at 2k after a run of about 10 mins, any suggestions or help would be appreciated!

 

[SBR Joe]

After driving my car and after putting on a afpr my idle sits at 2k after a run of about 10 mins, any suggestions or help would be appreciated!

What do you have the base fuel pressure at?



Joe
SBR

 

[dyno_detour]

There are so many things that could be causing that. BISS screw, boost leak, etc.

Read this:

http://www.dsm.org/how-tos/tttt/tttt3.html

 

[GsxProject]

What do you have the base fuel pressure at?



Joe
SBR

Stock is 38 and I set mine to 40, don't know why it's doing that but, it'll stay up to 2k for about a min or two and then go back down. The car idles(after starting),runs, and drives fine, but after coming down from rpms it stays around 2k.

 

[DJ23GSX]

Could be bad throttle body shaft seals. Sometimes when they wear out they cause the throttle plate to stick and not close all the way.

 

[GsxProject]

Could be bad throttle body shaft seals. Sometimes when they wear out they cause the throttle plate to stick and not close all the way.

Where is the shaft and is it hard to replace the shaft seals? And if in the case that it's not worth hassle, would an upgrade be easier to deal with?

 

[DJ23GSX]

Where is the shaft and is it hard to replace the shaft seals? And if in the case that it's not worth hassle, would an upgrade be easier to deal with?

A boost leak test will first tell you if they're leaking before ripping anything apart. Just make sure while the intake is pressureized you open the the throttle plate a few times and try and wiggle the cable spring cause sometimes they don't leak until they're moved like mine did. This is how to change them.

http://www.ca.dsm.org/faq/tb-shaftseals.html