singletrack Posted April 8, 2005 Share Posted April 8, 2005 OK, so the Safari Wagon [88 SPFI] is still idling at 1200. -I've changed/cleaned the air valve on the tb -TPS is functioning, idle switch is closed when thottle is released -I can't seem to find any vaccum leaks, have lots of new hose. -The throttle stop set screw got moved at one point, but I purdy sure it's back were it should be. -Idle adjustment screw can't adjust that far On a cold start it'll idle at 1800ish, then drop to 1200 when warmed up. If I disconnect the harness on the air valve, it'll idle at 700. It drives fine, IT JUST WONT IDLE I've done all the searching I can here and I don't know what else to try. Oh wise and powerful Subaru Gurus please help me and my poor car. Link to comment Share on other sites More sharing options...
naru Posted April 8, 2005 Share Posted April 8, 2005 Check the coolant temperature sender. Link to comment Share on other sites More sharing options...
85Sub4WD Posted April 8, 2005 Share Posted April 8, 2005 sounds a LOT like the problem I had with my dead (but not really) computer - I know that is the last thing you want to hear, and I recommend changing the coolant sensor and checking the closed throttle switch first (on side of throttle body), but that is a likely cause of the prob Link to comment Share on other sites More sharing options...
singletrack Posted April 8, 2005 Author Share Posted April 8, 2005 OK, I wa thinking coolant temp sensor; If I understand correctly there's two at the t-stat, one for the dash and one for the computer. Which is which? As far as the computer goes, it throws correct codes if parts are removed/disconnected, which makes me think it's working. Is there a good way to tell if it's not working? I did notice that rotating the TPS with the throttle stationary did nothing to engine speed, which seems odd. The CPU shoulda sent more gas in that case, and engine speed woulda have moved a bit right? There's a Junkyard with a good SPFI motor here.... is there a differnce between the Auto and Manual computer? (yard car has a bad auto) The guys at that yard are Subaru-friendly and will let me try the computer before I buy it, so I should prolly try that out. Link to comment Share on other sites More sharing options...
naru Posted April 9, 2005 Share Posted April 9, 2005 OK, I wa thinking coolant temp sensor; If I understand correctly there's two at the t-stat, one for the dash and one for the computer. Which is which? ECU one has 2 wires,pretty sure dash one has only 1 wire. Check by unplugging and seeing if the gauge works. Auto/manual ECUs are identical.Try for one that has the same part# as your original. Link to comment Share on other sites More sharing options...
singletrack Posted April 9, 2005 Author Share Posted April 9, 2005 Check by unplugging and seeing if the gauge works. My god man, that's brilliant! /I'm a little slow. Link to comment Share on other sites More sharing options...
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