Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

Hello Subaru lovers, question for you!

loss of power on low rpm

  • Please log in to reply
28 replies to this topic

#26 willwright

willwright

    Advanced Member

  • Members
  • PipPipPip
  • 71 posts
  • Colorado springs, co.

Posted 03 May 2014 - 05:39 PM

Bud I would try pressure testing the cylinders first before pulling the heads. I would hate to see you spend the money and the work involved without pressure treating them first but its totally your option. Grab a chiltins Manuel or Haynes from one of the parts stores for 25 bucks or less , they have nice illustrated instructions if you choose to go ahead with pulling the heads off.

#27 suby2001

suby2001

    Advanced Member

  • Members
  • PipPipPip
  • 35 posts
  • Painesville, OH

Posted 03 May 2014 - 05:44 PM

I wanted to try to adjust the valves and I told my mechanic that it would be nice to do it before, but he said there's no way to adjust them, it's not a chevy where you can easily adjust the valves, so unless someone can explain step by step how to do it so I can do it myself( I'm a newbie) I don't want to take the heads off, and sorry, but I did not understood how to adjust the valves from the past posts :( 



#28 suby2001

suby2001

    Advanced Member

  • Members
  • PipPipPip
  • 35 posts
  • Painesville, OH

Posted 20 May 2014 - 01:47 PM

Finished the job, adjusted the valves, cleaned the heads at the machine shop. Runs a lot better now, but got a CEL for:

 

P1507 No DTC Definition found

P0507 Idle air Control system Revolutions Per Minute Higher than Expected

 

Also, the gas pedal vibrating a lot pretty much all the time. RPM on parking around 1.2; on drive around 0.9

 

TPS sensor is good, just might need to be adjusted, and also we tried to adjust the gas pedal and cruise control cables. Any suggestions what should I do or how to properly adjust both of them?

 

Thank you!



#29 Fairtax4me

Fairtax4me

    Sooberoo

  • Members
  • 9,762 posts
  • Charlottesburg, VA

Posted 20 May 2014 - 08:48 PM

Both codes are probably because your throttle and cruise cables are adjusted incorrectly.


The cable should be loose. It should be able to wiggle side to side about 1/8"-1/4" easily.
You have 2 nuts on the end of the cable sheath. One lock nut which is the closest to the throttle lever. The adjusting nut is on the other side of the bracket, towards the front of the car.
Loosen the lock nut, then spin the adjusting nut to adjust tension on the cable. If you spin the nut towards the lever, it pulls the cable tighter. Away from the lever will loosen the cable. Once you get it adjusted tighten the lock nut while holding the adjusting nut in place.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users