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Everything posted by Legacy777
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The 90-91 AT & MT legacies had different sensors. The ignitor, coil pack, injectors, IAC valve, MAF sensor, and ECU are different. The ignitor & coil pack won't really matter. The injectors are timed slightly different, so your mixture will not be right on. I'd suggest swapping the AT injectors in. Also, the IAC valve on the AT's is a rotary type valve, compared to the MT's recipricating valve. The MAF sensor is also different. Swap the IAC valve & injectors from the AT car. Also, sounds like your coolant temp sensor is bad. Did you check the codes? Do that before you do anything else. The computer is telling you what it doesn't like....
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They have to take the timing belt off to get at these things. I'd say, add a 1/2 hour of labor to replace the water pump, and a 1/2 hr to 1 hr to pull the oil pump, clean it, and reseal it with rtv silicone. Those times would be added onto the normal timing belt job. You might as well replace the belt while you're in there and have it off. Timing belt job can range from 200-400. I think if you were to have all that work done at the dealer, I would say somewhere in the 400-550 range. Give or take.
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Is the TPS a 4-wire TPS or 3-wire? If it's a 4-wire TPS, it needs to be adjusted using the following procedure http://www.main.experiencetherave.com:8080/subaru_manual_scans/FSM_Scans/TPS_testing3.jpg If it's a 3-wire TPS, it'll probably be similar or the same as this http://www.main.experiencetherave.com:8080/subaru_manual_scans/2002_WRX_FSM/scans/2002_WRX_TPS_testing.zip
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Yeah, check to make sure everything is working right with the clutch. There are two clips that hold the clutch fork onto the throw out bearing. It's possible something might be wrong with that. If everything is good, it's probably the synchros....in which case, you'd have to tear into the trans to replace them.