P0507 - Help me narrow it down! - JeepForum.com
 
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post #1 of 1 Old 01-04-2015, 12:46 PM Thread Starter
stevestloo
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2006 LJ Wrangler 
 
Join Date: Jul 2012
Location: Norwich
Posts: 40
P0507 - Help me narrow it down!

Hey guys,

I have a 2006 LJ w/ the 6speed manual and 96K miles
Check engine light came on with code P0507

"P0507 - Idle Air Control System RPM Higher Than Expected"

and the "possible causes" list is a mile long.
I was hoping if I listed some symptoms that it would narrow the problem down:


The vehicle idles at 1000 to 1050 or so RPM whether cold start or warmed up. Because of this higher idle I can't really listen that well for vacuum leaks.

When I am cruising down the road, the RPM's tend to want to stay in place until I just about come to a stop, which is when it returns to the 1000 or so idle.

Even at a complete stop, if I give it gas in neutral, the RPMs will go to wherever they go, say 2000RPM, and has a hard time coming down to idle level.

I did feel around some of the vacuum lines and I did not feel anything, but like I said its pretty loud. The crankcase vent elbows and grommets are new also.

I don't mind throwing a part or two at the problem, but if any of the above sounds like something obvious please let me know! Thanks!!



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