Brayburks Posted August 21, 2003 Share Posted August 21, 2003 Before my legacy warms up it surges violently when i accellerate through the gears. It seams that if I take it easy it doesn't do it that bad. Also when it warms up, it is not as noticeable. I read in another thread that it is good to clean the throttle postion sensor, but I haven't gotten to that yet. Is there something else that I should consider?? Quote Link to comment Share on other sites More sharing options...
lmdew Posted August 22, 2003 Share Posted August 22, 2003 It may be the Intake Air Control Valve. If you have a manual, it tells you how to check it. Once the car is warm, it has little effect on the engine. Good Luck. Quote Link to comment Share on other sites More sharing options...
Legacy777 Posted August 26, 2003 Share Posted August 26, 2003 I think you were referring to the idle air control valve. It has a great deal to do with how the engine runs when warmed up. The valve has two parts, and electro-mechanical portion that is controled by the computer to allow a certain amount of air in the engine, and a temp controlled portion that uses a bi-metallic metal to close a secondary valve when temp gets above a certain point. It might be the TPS, but you may want to replace the coolant temp sensor. it's like 20 bucks from liberty subaru http://www.newsubaru.com Quote Link to comment Share on other sites More sharing options...
Brayburks Posted August 28, 2003 Author Share Posted August 28, 2003 THANKS JOSH. I HAVEN'T HAD TIME LATELY TO WORK ON THE PROBLEM, BUT I'LL CHECK THAT OUT. Quote Link to comment Share on other sites More sharing options...
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