Tye Posted January 13, 2016 Share Posted January 13, 2016 For the last 6 months I have been trying to get this vehicle running i have tried everything and running out of ideas.... and money. The vehicle is a 5 speed manual 1990 Subaru Loyale with an ej22 swappedinto it out of a 5 speed manual 1992 Subaru Legacy. 4 out of 5 days ofthe week it drives normally but runs rich (I get about 16 mpg), sometimes itwill surge idle/stall(also did this in the legacy), throttle wont responds unless pumped, will sometimes high idle like its cold even if it isn’t, Will have extreme hesitation/sputtering. I have replaced; Throttle positionsensor Oxygen sensor Coolant temp sensor Spark plugs and wires-all spark plugs are dark black but dry.I just checked them today. Coil pack Cleaned idle air control valve Had fuel injectors rebuilt New alternator New timing belt and water pump New intake manifold gaskets Valve cover gaskets Fuel filter Swapped out computer for a different one Checked for vacuum leaks couldn’t find any Had electrical expert/ Subaru mechanic check that all theelectrical was functioning properly Checked compression- all 4 cylinders were at 180 PSI- alsochecked today Cleaned the MAF sensor The exhaust sometimes is black sometimes is blue but isalmost always white, even when warm. The catalytic converter has been gutted out Check engine light codes read 31 and 33 which is throttleposition sensor and vehicle speed sensor. When I put in the new throttle position sensor today it ranmuch worse than usual to the point of not being able to drive. - Any help would be great 1 Quote Link to comment Share on other sites More sharing options...
Dee2 Posted January 13, 2016 Share Posted January 13, 2016 <quote>About to drive Over My Subaru with a Dump Truck</quote> Be sure to make a video and post it back here 1 Quote Link to comment Share on other sites More sharing options...
Tye Posted January 13, 2016 Author Share Posted January 13, 2016 <quote>About to drive Over My Subaru with a Dump Truck</quote> Be sure to make a video and post it back here haha will do! Quote Link to comment Share on other sites More sharing options...
skishop69 Posted January 13, 2016 Share Posted January 13, 2016 Well, first off you can ruin a MAF by cleaning it if the ignition is on. A MAF that is skewed will not set a code and will cause all kinds of issues. Second, are you sure the TPS circuits were spliced correctly and are good? Did you ohm them end to end? Should be less than 1 ohm. Quote Link to comment Share on other sites More sharing options...
DaveT Posted January 13, 2016 Share Posted January 13, 2016 Any number of wires in the engine harness could have an intermittent break. I am most familiar with EA82 systems, so not much more specific can I get. 1 Quote Link to comment Share on other sites More sharing options...
idosubaru Posted January 13, 2016 Share Posted January 13, 2016 Check engine light codes read 31 and 33 which is throttle position sensor and vehicle speed sensor. There - it's clear as day - a huge flashing NEON billboard sign is telling you it has TPS related issues. The code is not for "the throttle position sensor" but rather "The Throttle Position Sensor ***Circuit***". One of the wires from the TPS to the ECU is compromised. Test resistance of each wire from the TPS to the ECU. Knock sensor is the most common EJ sensor to fail by a looong shot, might as well replace that too. 1 Quote Link to comment Share on other sites More sharing options...
jono Posted January 13, 2016 Share Posted January 13, 2016 (edited) is the VSS connected up to the speedo head at the back ? Some EA82 according to legend had a VSS output. Every EA82 speedo head I pulled out had one. I never tested it for output surge, stall and high idle - without your foot intervening on the loud pedal ? a high idle speed is going to be by maybe an air leak in a duct between afm and throttle body, which can muck up randomly OR the higher idle speed is air leaking via one of the throttle body bypass worm holes controlled by an ECU controlled solenoid. You could try pull the TB and study it closely for any possible air bleed circuits bypass the throttle plate, tap into any solenoid control wires to see what they do and when ... I like how the problem transitioned from the donor to recipient and you told us Edited January 13, 2016 by jono Quote Link to comment Share on other sites More sharing options...
Numbchux Posted January 13, 2016 Share Posted January 13, 2016 Do you know that the TPS is calibrated correctly? Step one is definitely to check that, both at the sensor and at the ECU. Also, +1 to is your VSS connected correctly? Quote Link to comment Share on other sites More sharing options...
LovemyGLWGN Posted January 14, 2016 Share Posted January 14, 2016 Just be sure to check the oil pan for metal. May have just killed mine, after all I've put into it... your problem sounds different, but we were chasing similar behavior on mine.. Quote Link to comment Share on other sites More sharing options...
Tye Posted January 15, 2016 Author Share Posted January 15, 2016 thanks for all the help guys. i will definitely look into it! Quote Link to comment Share on other sites More sharing options...
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