Legacy777

As mentioned, check for codes and see if any are in there. Alias gave some good feedback on possible causes. Check the codes and let us know what you find out.

Another vote for prestone......been using it in my car since 95.....no problems related to coolant.

What type of problems were you seeing? It probably didn't have much to do with air bubbles. That line that goes to the TB also goes to the IAC valve and its bimetallic valve that closes when coolant temp goes above a certain point. by capping those coolant lines off, the valve never really saw hot enough coolant, and it stayed open.....which probably causes high idle. The ECU probably tried to compensate, and probably got confused......

oregonloyale, What exactly does the Haynes manual say? The IAC valve is composed of two parts a bimetallic strip valve that is temp operated and an electromagnet rotary valve. The rotary valve portion will be and should be about half way open close. The bottom bimetallic valve should not be visible when warmed up. The bottom opening of the valve is where that temp based valve is located. I'll try and take some pics of the spare valve I have. Either way....if the temp valve was "failing" half open your idle would be higher then it should be because the valve is letting more air into the engine.

Hmm.....I must be thinking of the other filter when I replied to your previous post. If it's the external filter you're talking about, the line is mostly going to the trans radiator in the main radiator. Email the pic, I'll host it and put the link in the thread so everyone can see.

On the first gen legacies the atmospheric pressure sensor is located in the ECU. It is not repairable, you must replace the ECU. I'd suggest clearing the codes, see if it comes back. If it does, try and find a used ECU at a auto parts yard.

There's really no safe way to do this. The first cat is part of the manifold, and you definitely don't want to run the engine without any manifold. AusLegacy, you can get a decent idea of catalytic converter condition by checking the engines vacuum. There is a thread that specifically describes what vacuum will do if cats are clogged. Please do a search, if you can't find anything, let me know and I'll see if I can help.

Once you have all the bolts off, you just need to use brute strength. However you don't need to replace it.....it's just a screen. If your tranny fluid looks good, and you don't have chunks of metal on the magnet, you should be fine. A magnet goo/paste on the magnet is normal.

Now for the index of everything 1990-1994 Subaru Legacy Parts Manual – Engine* Illustrated Index* Group Index* Short Block Engine* Gasket & Seal Kit (Engine)* Cylinder Block* Timing Hole Plug & Transmission Bolt* Cylinder Head* Piston & Crankshaft* Flywheel* Camshaft & Cambelt* Valve & Valve Rocker* Rocker Cover & Oil Filler Duct* Timing Belt Cover (To Dec ’92)* Timing Belt Cover (From Jan ’93)* Oil Pan* Oil Pump & Oil Filter* Oil Cooler; Turbo (‘91MY)* Water Pump; NA* Water Pump; Turbo* Turbo Charger System* Intake Manifold; NA (’90 & ‘91MYS)* Intake Manifold; NA (’92 & ‘94MYS)* Intake Manifold; Turbo* Air Cleaner* Air Duct* Fuel Pipe System* Fuel Injector* Engine Cooling System; NA* Engine Cooling System; Turbo* Throttle Body & Air Duct* Alternator Bracket & V Belt* Spark Plug & High Tension Cord* Wiring Harness-Engine; NA* Wiring Harness-Engine; Turbo* Starter (1) MT (1.0KW)* Starter (2) AT (1.4KW)* Alternator* Hose & Clamp (P.C.V.); NA* Hose & Clamp (P.C.V.); Turbo* Emission Cont System; Turbo* Engine Electrical Parts 1992 FSM (Engine & Electrical)* Table of Contents* 1-1 Specifications* 2 Engine Section Index* 2-1 Emission Control System and Vacuum Fitting* System Application* Schematic Drawing* General Precautions* Crankcase Emission Control System* Ignition Control System* Evaporative Emission Control System* Vacuum Fitting* 2-2 On-Car Services* Foreword* Engine Compression* Intake Manifold Vacuum* Hydraulic Lash Adjuster* Fuel Injector* Oxygen (O2) Sensor* 2-3 Engine* Mechanism and Function* General* Timing Belt* Belt Tension Adjuster* Belt Cover* Valve Rocker ASSY* Hydraulic Lash Adjuster* Cam Shaft* Cylinder Head* Cylinder Block* Crankshaft* Piston* Specifications and Service Data* Specifications* Service Data* Component Parts* Timing Belt* Cylinder Head and Camshaft* Cylinder Head and Valve ASSY* Cylinder Block* Crankshaft and Piston* Service Procedure* General Precautions* Timing Belt* Valve Rocker ASSY* Camshaft* Cylinder Head* Cylinder Block* Troubleshooting* Engine Trouble in General* Engine Noise* 2-4 Engine Lubrication System* Mechanism and Function* General* Lubrication Lines* Oil Pump* Oil Filter* Oil Pan & Oil Strainer* Oil Pressure Switch* Specifications and Service Data* Component Parts* Oil Pump* Service Procedure* Oil Pump* Troubleshooting* 2-5 Engine Cooling System* Mechanism and Function* General* Cooling Lines* Water Pump* Mechanical Seal* Thermostat* Coolant Filler Tank* Specifications and Service Data* Specifications* Service Data* Component Parts* Water Pump* Radiator and Radiator Fan* Water Pipe* Service Procedure* Water Pump* Thermostat* Radiator* Radiator Cap (Filler Tank Cap on Turbo Model)* Radiator Fan and Fan Motor* Coolant Filler Tank* Troubleshooting* 2-7 Fuel Injection System* Mechanism and Function* General* Air Line* Fuel Line* Sensor and Switch* Control System* Self-diagnosis System* Turbocharger System* Component Parts* Intake Manifold* Air Intake Duct and Throttle Body* Air Cleaner* Turbocharger Unit* Service Procedure* Turbocharger System* Troubleshooting* Supplemental Restraint System “Airbag”* Precautions* Pre-inspection* Troubleshooting Chart for Self-diagnosis System* Output Modes of Select Monitor* Control Unit I/O Signal* Troubleshooting for Engine Starting Failure* Troubleshooting Chart with Trouble Code* Troubleshooting Chart with Select Monitor* General Troubleshooting Table* 2-8 Fuel System* Mechanism and Function* Fuel Lines* Specifications and Service Data* 6-1 Engine Electrical System* Specifications and Service Data* Component Parts* Starter* Alternator* Service Procedure* Starter* Alternator* Spark Plug* Ignition Coil* Spark Plug Cord* Troubleshooting* Starter* Alternator* 6-2 Body Electrical System* Engine Electrical (MPFI)* Radiator Fan* Lighting* Cruise Control* 6-3 Wiring Diagram and Troubleshooting* General Description* Working Precautions* How to Use Wiring Diagram* How to Use Super Multiple Junctions (S.M.J.)* Wiring Diagram and Troubleshooting* Power Supply Routing* Charging* Starting* Engine Electrical* Radiator Fan* Lighting (Headlight)* Lighting (Tail, Illumination, etc.)* Room Light and Door Switch* Stop Light* Turn Signal and Hazard* Trunk Room Light* Back-up Light* A/T Control* A/T Shift Lock* Electrical Unit Location* Compressor Map – IHI BRL4016 (EJ22 Turbo) 1992 Subaru Service Bulletins* 2.2L 4-Cyl & 2.2L 4-Cyl Turbo – VIN (6)* Removal & Installation* Overhaul* Engine Oiling* Water Pump R & I* Torque Specifications* Engine Specifications* Interference Verification Check for OHC Engine* Specifications* Capacities* Quick-Service* Mechanical Checks* Ignition System* Fuel System* Theory/Operation* Air Induction System* Computerized Engine Controls* Fuel System (Carbureted)* Fuel System (Fuel Injected)* Ignition Systems* Emission Systems* Self-Diagnostics* Basic Testing* Fuel System* Ignition Checks* Idle Speed & Ignition Timing* Fuel Pump Circuit Tests* Tests W/Codes* Self-Diagnostic System* Diagnostic Code Charts* Read Memory Mode* D-Check Mode* Clear Memory Mode* Crank Angle Sensor* Starter Switch* Cam Angle Sensor* Fuel Injectors* Coolant (Water) Temperature Sensor* Knock Sensor* Airflow Meter Circuit* By-pass Air Control Valve* Throttle Position Sensor* Oxygen (O2) Sensor* Vehicle Speed Sensor No. 2* Canister Purge Control (CPC) Solenoid Valve* Air/Fuel Ratio Control System* Idle Switch* Wastegate Control Duty Solenoid Valve (Turbo)* Pressure Sensor Duty Solenoid* Atmospheric Pressure Sensor (Non-Turbo)* Airflow Sensor* Neutral Safety Switch (Man. Trans.)* Inhibitor Switch (Auto. Trans.)* Parking Brake Switch (Auto. Trans.)* Tests W/O Codes* Symptom Diagnosis (Carbureted – Justy)* Justy Symptom Diagnostic Chart* Loyale Symptom Diagnostic Chart* Legacy Symptom Diagnostic Chart* SVX Symptom Diagnostic Chart* Intermittent Problem Diagnosis* Wiring Diagrams* Wiring Diagram (Legacy 2.2L PFI & Turbo)* Component Location Menu* Engine Compartment, Headlights (Grid 1-3)* MPFI Control Unit (Non Turbo), Ignition Relay (Grid 4-7)* Check Connector, Ignition Coil (Non Turbo) (Grid 8-11)* MPFI Control Unit (Turbo) (Grid 12-15)* Check Connector, Ignition Coil (Turbo) (Grid 16-19)* Fuse Relay Box, Ignition Switch (Grid 20-23)* A/T Control Unit, Shift Lock Control Unit (Grid 24-27)* ABS Control Unit, Cruise Control Unit (Grid 28-31)* Air Suspension Sensors, Height Control Unit (Grid 32-35)* A/C Relay Box, Air Bag Control Unit (Grid 36-39)* Front Wiper Motor, Hazard Sw (Grid 40-43)* Instrument Cluster, Dome Light (Grid 44-47)* Auto Shoulder Belt Control Unit, Pwr Windows (Grid 48-51)* Power Mirror/Sunroof Sw, Tail Lights (Grid 52-55)* Electrical Component Locator* Buzzers, Relays, & Timers* Circuit Protection Devices* Control Units* Motors* Sending Units & Sensors* Solenoids & Solenoid Valves* Switches* Miscellaneous* Trouble Code 13 – Crank Angle Sensor* Vacuum Diagrams* Remove/Install/Overhaul – Turbocharger (Legacy)* Effects of Incorrect Fuel Use: New Procedure* Incorrect Oil Pump Cover Torque: New Specification* Fuel Injector Replacement* Incorrect Duty/ID/Data Charts: New Charts* Updated Line Pressure Duty Diagram (1990 Legacy)* Updated Line Pressure Duty Diagram (1991-92 Legacy)* Updated Line Pressure Duty Diagram (1992 SVX)* Updated Cartridge I.D. Chart for Select Monitor* Updated A/T Data Ranges (1990 Legacy)* Updated A/T Data Ranges (1991-92 Legacy)* Low RVP Fuel Effects: New A/T ECU-ROM Installation* Omitted Fuel Gauge Delay Amplifier: Not Used in USA

I posted this on legacycentral....but figured I wouldn't leave you out of the dark Well....I wouldn't want you guys to think I don't like you and not get you a Christmas present.....so I'm going to inundate you with info. Larry posted a link over on the BC-BF List for these parts & service manuals. This guy apparently scanned them in because he used an EJ22 motor in his airplane. Well the scans were a little hard to navigate....so being me, I added bookmarks to the pdfs so you have a nice index structure to see what's all in the pdf. The FSM & Parts manuals only include the engine/electrical pages, but contain most of the important stuff. Here's the original site http://www.finleyweb.net/default.asp?id=142 Please right click and save the pdf's. Thanks! Here is the root link for all the service manuals http://www.main.experiencetherave.com/subaru_manual_scans/ 1992 FSM (Engine & Electrical) http://www.main.experiencetherave.com/subaru_manual_scans/1992_FSM_Eng_and_Elect/ 1990-1994 Parts Manual http://www.main.experiencetherave.com/subaru_manual_scans/1990-1994_Legacy_Parts_Catalog_-_FULL/ 1992 Service Bulletins http://www.main.experiencetherave.com/subaru_manual_scans/Subaru_Service_Bulletins/ Don't forget the other scans I already have there. Also, some of you know this, but I have scanned my entire owner's manual as well. You can look at each page or d/l a complete pdf file http://www.main.experiencetherave.com/owner/ Like I said, there's A LOT of info in these pdf's. The service bulletins have a lot of good info too. Enjoy

Jay, Ecu is located under the dash to the left side of the steering column. here's a pic http://www.main.experiencetherave.com:8080/subaru/images/ecuhide.jpg

Carbotech recently released a compound/brake pad called the bobcat. All the reviews of this pad are extremely good. Great initial bite, good cold stopping, and rather large effective temp range. They probably don't list a part for your car, but email them and see if they can make you a set.... http://carbotecheng.com/main.htm Only issue is, yes they will be a little more then your autozone pads. probably in 80-90 range.....give or take. My mintex pads were about 100-110 for front and rear......but they do stop very well. Also....the subaru brake system is about the easiest brake system I think I've worked on. I've practically re-engineered the entire thing. The only braking componants that remain from stock are the hard brake lines & the booster. Everything else has been swapped out, front & rear rotors, pads, lines, MC, & prop valve.

Also, regarding the chips.....they don't really work too well with automatics. There are ones that supposedly work with autos....however after running a torquechip, I just wasn't too impressed.....all I could tell is that I was running richer.....and the peakiness of the car seemed more subdued....which would make sense since adding more fuel moves you down on the parabolic burning curve, since the factory usually tunes for emissions.

here's the issue....do you want to remove the entire hub, take it to a shop or let a shop take it out, press the bearing out and press a new one in? I just changed the axles on my car......probably wouldn't have hurt to do the bearings, but I didn't want to mess with the hub issue, especially since it's my only car...and I'll probably be messing with drivetrain stuff again later on.

just to throw this out....it was mentioned breifly There are two types of mafs, hot wire & hot film. The hot films are usually found on the imprezas, and as mentioned tend to be more fragile. alias, do the hot film sensors really respond to cleaning that well? I can see how cleaning the hot wire ones probably wouldn't be too bad since the wire is in the flow of air and cleaner. Don't the hot film ones not have this film visible? which is why I would think it would make cleaning them more difficult.

no prob guys....

my site is wrong....the pic I have labeled as ECU is actually the TCU. The first two pics are of the TCU. The last pic is looks like the ECU

Some very valuable info on this page http://www.finleyweb.net/default.asp?id=142 I'm probably going to work on trying to build a table of contents of some sort into them. Right now, they're just one long continuous scrolling pdf. But the info is still there.

Not sure if you guys have stumbled across this yet....but it's worth a post. http://www.finleyweb.net/default.asp?id=142

I highly recommend sea foam if you're looking to get rid of carbon deposits in the engine. http://usmb.ultimatesubaru.org/forum/showthread.php?s=&threadid=7855&highlight=sea+foam+josh

Chip I don't personally agree with alias's tone. I am not going to say his diagnosis is wrong, nor correct. There's a lot more things that it could be, and should be checked. I do agree with you that I don't see how it all of sudden started happening 9,000 miles after the filter was oiled. Filter definitely would not first on my list of causes... Do you know if they changed to oxygenated gas recently? Is there anything recently you can coincide your problem with....like a gas tank fill-up...etc??

we just had a thread on the legacycentral bbs about the manual button, and ciper seems to think/discovered that when the manual button is depressed the TCU uses the 1st gear map for 2nd, and 2nd gear map for 3rd. The reason he says this is due to the fact the car won't down shift....like you described. I don't recall the thread url, but if you look in the drivetrain forum on the legacycentral bbs, you should find something. if not let me know.

read the info on my site http://www.surrealmirage.com/subaru/trans.html#powerlight David, The vsp1 is the rear speed sensor. Clear the codes and see if it comes back. The rear speed sensor is in the tail shaft of the tranny. You can replace it, it's on the outside of the tranny. It would affect shifting and AWD

if the power light blinks on startup, there's a problem that the trans computer is picking up. you can read how to get the codes from my site. http://www.surrealmirage.com/subaru/trans.html

did you not read alias's post