Jump to content
Ultimate Subaru Message Board

EA82T misses between 2500-4500rpm if i step on pedal or pump on it


Recommended Posts

Hi, I have an '87 GL Turbo, and if I floor it or pump the accelerator between 2.5k and 4.5k it starts to miss and sputter, but if I gaive it say 3/4 throttle, it will rev up perfect

 

My first thought was the intake was leaking because it started in boost range (boost light comes on at 2k every time) but can't find any leaks..

 

Timing advance? Bad pcv letting air in before turbo? Maf sensor? Idk what to check now..

 

-Thanks fer any help! Just got two feet of snow at my house and my wagon still goes anywhere! :)

Link to comment
Share on other sites

I'd double check the timing and hook up an analog boost gauge to make sure the pressure is not spiking. These are equipped with an overboost switch which cuts the fuel (which is a bad idea, IMO. Should be an ignition cut) when the boost pressure is too high.

 

Otherwise, check the normal rubber parts for cracks and check the TPS for smooth operation and consistent resistance readings.

Link to comment
Share on other sites

going to get boost gauge, but as soon as i pulled TPS off it kinda crumbled in few pieces, so other than weak pump i may have found my problem with that.

 

and recently change both timing belts.. when i check the timing with a light the line kinda wavers about 2* back and forth going from about 17*-19* :/

 

this engine has 235,000 miles all stock and runs great. i plan on going over as much as i can to restore it

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...