sea#3

Ok this is only a theory Since you have replaced the ECM and have the same out come, I would think you might have a back feed through the harness somewhere. The most likely place is the B19/E1 connector (see schematic). May be some corrosion or water in the connector. If not that, I would disconnect the C7 wire and the C20wire at the ECM then see what the scan tool says. If it says 3.8v it’s inside the ECM. If its 0 then get a voltmeter and measure the wires on the harness. Since the B19/E1 connector share the front and rear 02 sensors there may be a back feed through there Hope this Helps SEA#3

Assuming it's a new TPS and not defective, I would look at the wiring to the TPS and the connector between the TPS and the ECM. The one connector that often gives trouble is the one at the engine harness and the main harness from the firewall. It should be a gray connector SEA#3

There are 4 drain hoses , 2 at each front a-pillars and 2 at each rear d-pillars. The best way to find it is drop the head liner and water test it . Not an easy job , you have to remove all the trim that contacts the head liner then drop it out the rear gate. One thing that makes it a little easier is that it a wagon Some time the sealant at the right rear drain cracks and leaks , but most of the time there is debris in the hose SEA#3

edit

Passenger side foot well . Pull back the carpet and it under the metal sheild (2 bolts 1 nut 10mm ) Sea#3

Yup the speed sensor #2 is in the speedo , it has probably coded up code 33 speed sensor #2 malfunction Hook up the cable , clear the code and you should be good to go SEA#3

Diagram #5 Sea#3

The CEL is for the front bank no response. What is the code ? There may be a recall on the ECM Sea#3

Go to code 24 Hope this helps SEA#3

SEA#3

This where it's at (see attached ) but doubt it's going to make noise Does you speedo work? Hope this helps SEA#3

This should help you find the resistor (#2 on page 4 and 5) SEA#3

Try this to pull codes Hope this helps SEA#3

Try this to pull codes , Tell us what you get , it is most likely the Drop resistor, don't worry about the buzzing hope this helps SEA#3

This may help you SEA#3

Check with the dealer there may be an oustanding recall on the front (A/F) sensor Get your VIN # and phone it in and see SEA#3

One last thing that may or may not be related - when you first start this car up in the morning, everything is fine until you put it in gear and let the clutch out the first time - you have better be ready to push the clutch back in quickly, because the engine is going to self rev to about 3500 RPM. It does this for about 10 seconds, then settles down and is fine for the rest of the day. But every morning, first time you put it in gear and let the clutch out, it revs to 3500 RPM all on its own. If you don't get the clutch back in you'll take off like a bat out of .......... Any ideas on that? Tom There is a ECM update for your last concern . It may fix the first concern SEA#3 Thanks to all. Nice car but these two things are very annoying.

Time for a Knock sensor.... They go open circuit with temperature change You can find it just below the throttle body on the cable side ,Take out old one ,clean off block install new knock sensor and torque to 17 lbs/ft Hope this helps SEA#3

Did you check the idlers before you installed the belt? #2 idler are known to wear , if the bearing on that idler is worn it will tip up and push the belt out SEA#3

This might help , you did not say if it was an auto or standard SEA#3

Try this attachment SEA#3 D""m to big to send

The whistle come in at 3000 to say 4500 under moderate to heavy load right? It comes from the Muffler(rear) , now your saying it can't be it sounds further up.Try driving the car with the rear hatch open and you might have a different opinion . I usually get 2-3 complaint a year , mostly on Impreza's but some Legacy's hope this helps SEA#3

What model and year??? It might fall under a recall SEA#3

Got a feeling you might have crush the soleinoid !!! Drop the pan and have a look, check the solenoid where the connector goes , if it is loose on the solenoid it is most likley done . You can also check for continuity it should be less than 1 ohm SEA#3