Stevo F

OK, I was able to match up the L "light" and S "Sense" wires from the 3 wire plug to the 2 wire plug. I temporarily attached female spade connectors to the wires and hooked them up to the alternator and it was charging at 13.8- 14.0 volts, right where I wanted. Having a built in voltmeter is new to me, and I noticed on some occasions it would go down to around 12.7 volts for a few seconds, then back up to upper 13's- I assume there's no issue there, as the Duralast alternator I was running temporarily was doing something similar.

I went ahead and ordered the older style 2 pin connector for my Subaru refurbished older tyle alternator. I just want to make sure I wire it in correctly. Based on this diagram- which pin on the 3 pin connector correlate to which pin on the 2 pin connector. I found this diagram of the rear of the alternator and the 2 pin connector.

Update- I sourced a used OEM alternator off eBay and it worked for about 2 minutes then stopped charging. Back to the drawing board. Thr only alternator they had worked all thr time is the POS Duralast unit. Just wondering if I should get an old style plug, and wire it in and use the unused ‘98 alternator or might that cause issues with the electrical system?

I replaced the alternator on my 2003 Forester a few months ago with an OEM new alternator. Now I'm finding, with a voltmeter, that either it takes a few seconds to art charging or not at (it takes several starts for battery voltage to go from 12 to 14 volts). I installed a crappy Duralast alternator and it pushes 13.5- 14 volts all the time. I'd rather use OEM than Duralast (it was originally on my Outback when I bought it and I replaced it with OEM on that car). I already have an unused Subaru remanufactured alternator that I had purchased for my '98 Legacy, but sold the car before I could install it. My question is whether I can use the older alternator on my Forester. I'm not that concerned that it's only an 85 amp vs. my current 90 Amps, but the electrical plug is a different shape, although it has two wires like on my 2003 Forester. I figure I could just wire in the 90's style plug, but are there are design differences between 1990's and 2000;'s Subaru alternators that would prohibit me from using the older alternator?

Has anybody tried the Subaru climate control cleaner that is sprayed through the drain hose into the evaporator to clean it out- does it work well?

As a contrast, I checked my 2003 Forester which I would assume has a similar A/C system, and the A:C temp (on recirculate) got down to 44 degrees abs I ran it that way for at least 5 minutes with no cycling

Thank you. Interestingly, If I drop the Dan speed the temp all starts dropping and that’s when the cycling starts. Has anybody tried the Subaru climate control cleaner that is sprayed through the drain hose into the evaporator to clean it out- does it work well?

At the start of the hot weather, I started up the air conditioning on the Outback I bought from my Dad last year and noticed that the A/C compressor would run for 30- 40 seconds, then cycle off for another 30 seconds, then repeat. I obtain an HVAC thermometer with a probe, that I inserted into the center dash AC vent. I found that when the compressor would run, it would get the air temperature down to about 48 degrees F, then the compressor kicks off and the temperature coming out of the ducts would rise to the upper 50's, then it would kick on again. I had my mechanic hookup up his gauges to the A/C system and he found the refrigerant was 1/2 lb, low, so he added refrigerant and checked for leaks (he couldn't find any). I'm not sure when my father last had the A/C serviced (he doesn't recall). My mechanic said the compressor wasn't cycling so all seemed well. When I drove it, I checked the air again, putting it on recirculate as you are supposed to with air conditioning, then it would cycle again 30- 40 seconds the same way, but when taking it off of recirculate, the compressor did stay on and kept the A/C temp at 53- 54 degrees, pretty cold, but not really as cold as it should be. I rigged up the thermometer to measure the air temps as I drove the car 45 miles home from my Dad's (90 degrees and humid), and as I drove, if I kept the fan speed on 3 and didn't recirculate, keeping the temp around 53 degrees, the compressor never cycled, but if I dropped the fan speed to 2, or put it on recirculate, then air temp dropped to about 49 degrees and it started cycling on and off again. So I have concluded that it seems like there is a switch that is switching off the compressor when the A/C temp drops (possibly to keep the evaporator from freezing up) but it seems to be shutting it off at too high of a temperature. Is there such a switch, and is there a way to test it see if it's functioning properly?

Swapping in a used ECU shouldn't be a big deal on a 2007. I tried this on my 2008 Forester and had no issues (also didn't solve the problem so I now have a spare). I'm not sure about that generation Outback, but it was plug and play for my Forester.

Yes plugs are just a few thousand miles old and I just put new NGK wires on it. Just replaced both O2 sensors with Denso units as well.

Yes, OEM alternators are pricy but worth it compared to other rebuilts. Other rebuilders only replace defective parts but Subaru replaces anything that might fail so it's as good as a new one. I recall pricing one for my 2005 Impreza and it was around the same price as you found. I kjust put an OEM on my 2000 Outback and luckily for that year it was only around $250

The reservoir has never overflowed nor has this car ever had an air bubbles in the reservoir with the engine running (I had two newer Foresters with internal headgasket leaks so I knew what to check for on this one)

I figured it out the other day. I took another look at the heater hoses and there was wet coolant residue at the heater core ends of the hoses. The clamps weren't super tight, so i tightened them down (I replaced the heater hoses and used new clamps 5 years ago). I figured I was pushing on the heater hoses when accessing the transmission dipstick when I was checking the ATF level, and the loose clamps let some coolant leak out when the hoses were pushed on. I ran the car and even pushed on the heater hoses, but the connections to the heater core are still dry.

Funny thing that I started and warmed it up a couple times after and no leak at all. I found the radiator was full but the coolant overflow reservoir was empty when it was cold again.

I checking over the 2003 Forester in the garage, and shut it off after checking automatic transmission fluid level. I heard a dripping sound from underneath and saw a small puddle under the transmission pan. I put it up on Jack stands and got underneath, but the dripping had stopped. I confirmed it was engine coolant but looking up underneath, I couldn’t determine where it came from. My first thought was from a heater hose, since it was from that general area, but both heater hoses were clean and dry (they were replaced 5 years ago). Also no indication of leaking from the heater core. Not sure where else to look for coolant leaks near the rear of the engine. Are these are any other small coolant hoses on the EJ251 engine? I recall my old EJ22 had a small coolant hose that ran to the IACV. Not sure where else to look for coolant leak from that part of the car.