Steve B Posted May 24, 2006 Share Posted May 24, 2006 I think the TPS is getting lazy in its old age on my SPFI '87 GL. Can it be cleaned or replaced? Where is it? Symptoms include low idle upon first start of the day then within 15 seconds, rpms will slowly increase to its regular 1500. Also when running the AC , the motor will usually die or idle at about 300 rpm when comming to a stop. Otherwise engine runs great @25 mppg. Quote Link to comment Share on other sites More sharing options...
[HTi]Johnson Posted May 24, 2006 Share Posted May 24, 2006 What about the coolant temp sensor? It is located to the top left of the throttle body, it's in the block. Rear ....x O==[]==O Quote Link to comment Share on other sites More sharing options...
hooziewhatsit Posted May 24, 2006 Share Posted May 24, 2006 almost sounds like it could be the idle air control valve (IAC). Some searches should show where it is, and that it can get gunked up and need cleaning. Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted May 25, 2006 Share Posted May 25, 2006 Did you check the Hoses that activate the Idle Actuator of the Air Conditioneer? Those are two: one comin´ from the engine (3/16") to the Passenger´s side of the hood (Near the Glass) where the Relays of the A/C are Located... The second one comes from there to the Accelerator linkage, and it "Pulls" it a li´l bit to make your engine´s Idle speed increases when you turn on the A/C. If one or both of them are Unplugged or damaged, the simptoms are like that you describe... See this thread, maybe it can Help: http://www.ultimatesubaru.org/forum/showthread.php?t=56060 Good Luck! Quote Link to comment Share on other sites More sharing options...
idosubaru Posted May 25, 2006 Share Posted May 25, 2006 yes the TPS can be cleaned and repaired with excellent results. we have a complete write-up with pictures at http://www.xt6.net of the process. here's a direct link: http://www.xt6.net/forum/viewtopic.php?t=5525&highlight=tps Quote Link to comment Share on other sites More sharing options...
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