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
- - - - -

dead spot in throttle under load!


  • Please log in to reply
4 replies to this topic

#1 kharris360

kharris360

    Newbie

  • Members
  • Pip
  • 9 posts
  • Orofino, Idaho

Posted 15 November 2013 - 07:40 AM

Hey I have a 99 Impreza OBS 2.2 auto with 168,000 miles and I am having a really hard time trying to wrap my head around this issue! It has bin getting worse for the past few months and I have no idea what to do. I am getting a really bad dead spot in my throttle mainly when under load i.e accelerating  threw a corner or going up hill. the throttle response is fine for about the first 1/4 of the peddle and then flatt with super slow acceleration until it hits 3200RPM and then it throws you back in your seat. I have replaced plugs, wires,fuel filter, front AF sensor, cleaned the MAF sensor, tranny flush and filter, air filter, and knock sensor. I have no CEL's on or stored and the only one I ever got was for the knock sensor and the car had the problem before that. If I disconnect the battery and wait 15-20 minutes then hook it back up the problem goes away and the car drives fine under any condition then it returns after about 80 miles. Any help will be greatly appreciated!!!!!!!!!!!!! Thanks 



#2 CNY_Dave

CNY_Dave

    03 LL Bean H6

  • Members
  • 1,450 posts
  • Near Cortland NY

Posted 15 November 2013 - 12:27 PM

The throttle position sensor won't throw any codes until it is completey shot.

 

It tests easily with an ohmmeter, or it might be cheap enough to just try it on a lark.



#3 kharris360

kharris360

    Newbie

  • Members
  • Pip
  • 9 posts
  • Orofino, Idaho

Posted 17 November 2013 - 10:04 PM

did that and it test out at .5 volts



#4 CNY_Dave

CNY_Dave

    03 LL Bean H6

  • Members
  • 1,450 posts
  • Near Cortland NY

Posted 18 November 2013 - 10:23 AM

You need to test at all points in the throttle range and make sure the voltage (or ohms if checking ohms with connector disconnected) sweeps with no breaks or sudden jumps.

 

You need to check the center 'wiper' pin to one or both end pins.



#5 uniberp

uniberp

    mpmi

  • Members
  • 645 posts
  • Walker, MI

Posted 19 November 2013 - 07:30 AM

Add a can of Techron at 1/8 tank, change your plug wires. Plugs too but don't if you don't know aluminum thread torque behavior.






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users