I have a Evo X with a ECU tune and a cone filter. Car has been running great for months. Today i went out and when i turn the car on, i got a CEL and the cars rpms are climbing to 2k while in neutral. I checked all the vacum lines and fpr line all is in check. Ive reset the battery and nothing! Any ideas what this could be? Thanks!

 

What code is it throwing?

 

Didn't get time to get it checked today. Im guessing it may be a vacuum issue. When I turn the ac on the rpms go back to normal and when it shuts off they go back to 2k. I've checked all the hoses and haven't found any disconnected. Any suggestions?

 

...

 

P1235 probably..

go back to your tuner, if they dont know how to fix it - get a proper tuner...

 

I'll get the code pulled tomorrow and let you guys know what it is..I had it tuned w/ ecu flash. Its been tuned for over 6 months

 

yeh, but its winter now - so you are probably hitting different loads/airflows...

 

Ok I got them and I got Got codes PO131, PO137, PO102. I cleared them and car still idling at 1500-2k rpms in neutral

 

call ur tuner and ask them? does sound like vacum issues

 

did the CEL go off after you cleared them?

 

Maf sensor I assume. Swap it with an other one to check it. Takes 2 minutes.

 

No. I'm assuming I may have a bad MAF. going to my tuner this week and see what the issue is

 

did you try re-reading the DTC's after you cleared them?

 

No but I should have done that. I'll be going prob tuesday to my tuner to see what the issue is. I did notice that when the ac is on the rpms go back to normal and when it's off they go back up

 

is this an X or IX?