EA 82 runs poorly on a hot day- low power/ poor mpg

[jmoff]

Hey all,

 

I just can't seem to get a problem licked in my 88 GL (fuel injected).

 

A little while back, I had some idle problems, not starting, etc. I changed out the Idle Air Control Valve. I also changed plugs, wires, etc.

 

I was still was having some problems, so I changed the engine coolant temp sensor.

 

That got it up and running again, however not as well as before. Poor acceleration, poor mpg, especially when it was hot outside. But it did run again.

 

Recently, I swapped out the Oxygen Sensor and the EGR Valve. I felt like it started running a little better, and I thought I had it fixed. Unfortunately, either the problem has either returned (or I was just making it up, and it wasn't ever running better).

 

Either way, I'm still having poor acceleration (not as bad when it's cold out first thing in the AM). I'm also suffering a loss of MPG, especially when driving around town. Bogged down acceleration in 2nd, etc.

 

Does anyone have any ideas of what else it might be? I'm kind of enjoying the process, because I'm learning a lot about my vehicle, and this is all new ground for me (I've only done tune-ups in past), etc. However, it would be nice to actually get this thing running correctly again.

Edited May 24, 2011 by jmoff

[987687]

Did you use subaru plugs and wires? And also replace the cap and rotor?

 

Check your timing with a timing light. Could very well be causing your problem, it's a really easy thing to check!