power/mpg problem

[Iokua]

Hey, I need help, my 87 RX seems to loose power above 3k rpms, usually its like fuel cutoff at around 3500-4k, I assume the filter but I am also only getting 12-15 mpg, and at times it idles at about 2k, usually when cold, I've also noticed some knocking/misfiring. And to add to that, lately, its been dying after it warm, at idle.

 

I've replaced the timing belts recently and did the timing, this problem existed even before that. Help?

[MilesFox]

I would first see if you might be off a tooth in the timing belt if it does not rev out, but your first condition is likely to be the coolant temp sensor, as the car stalls or does not start when warm.

 

This sensor is located on the back of the manifold near the turbo. if you remove the 'subaru 4wd turbo' plenum, you will access it much easier. It has a brown top, and a connector shaped like the ones on the injectors

 

the coolant temp sensor cross references with some nissan application, if you have a hard time finding it.

 

At the parts counter , your listings will be 1985-1995, ea82 sohc or ohc, not the ohv 1.8 mpfi turbo. You can try looking for a loyale or XT for the listing as well

[Iokua]

Thanks for the tip. I tooktook the intake apart and there's oil in the intake, from the turbo to the manifold. What is going on here?

 

Oh, and I checked out the sensor, it shows conductivity, higher ohms when I removed it, so it seems ok, although, now its shows no conductivity...any thoughts?

 

I replaced the pcv just now but the old one still worked...

Edited May 9, 2011 by Iokua