Join Date: Oct 2007
Location: NC, USA
Car: 1999 Subaru Legacy Outback 2.5
Feedback Score: 0 reviews
'99 EJ25 Idle Adjustment
Okay, according to my mechanic, the idle on the EJ25 in my '99 Outback is controlled by the computer, and there is no adjustment. However, after repairing a blown cylinder head gasket and having both heads machined and valves done, my '99 Outback was idling at about 600 RPM, where it had previously idled around 800rpm, and at 600 the car was shaking somewhat.
My mechanic found on Alldata.com information on how to adjust the idle on this engine, and turned it up to 1000rpm. It smoothed out, but after a day or two set a P0507 code - RPM higher than expected for condition.
It is Saturday and mechanic is having a well deserved day off. I have been unable to find any info on the net about the idle on this engine. Is anyone familiar with what it takes to move the idle on this car? I'd like to try to adjust it down to about 800 and see how it goes.