Logan K Posted March 30, 2017 Share Posted March 30, 2017 2002 WRX, i have an intake leak coming from the shaft that actuates the TPS on the side of the throttle body (Confirmed with smoke test). Has anyone had this problem before, and if so were you able to fix the throttle body without replacing it? New from the dealer is $600, and the aftermarket units look like they dont have a provision for cruise control. Any advice would greatly be appreciated! Thank you! Link to comment Share on other sites More sharing options...
golucky66 Posted March 30, 2017 Share Posted March 30, 2017 (edited) Get one from a junk yard? Edited March 30, 2017 by golucky66 1 Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted March 30, 2017 Share Posted March 30, 2017 weird - is there an o-ring or seal in there? maybe dig around for a diagram/part number at www.opposedforces.com ? Link to comment Share on other sites More sharing options...
Logan K Posted April 3, 2017 Author Share Posted April 3, 2017 Ordered a "OEM" throttle body from Ebay for $130...we will see what happens Link to comment Share on other sites More sharing options...
Fairtax4me Posted April 4, 2017 Share Posted April 4, 2017 Are you having some other problem that prompted the smoke test? It's not normal to have to replace a throttle body for a worn throttle shaft. Remove the throttle shaft and check it for wear. The throttle shaft doesn't have a perfect seal, older stuff usually had just brass bushings on either end. Newer aluminum throttle bodies probably just have the shaft ride directly in the aluminum. Link to comment Share on other sites More sharing options...
Logan K Posted April 4, 2017 Author Share Posted April 4, 2017 Rough idle, fluctuating boost gauge, lousy fuel mileage. And no, not too normal but at 200k miles anything is possible right? I have seen similar problems before on fords and nissans. Link to comment Share on other sites More sharing options...
Fairtax4me Posted April 5, 2017 Share Posted April 5, 2017 Probably not a problem, but you can put some heavy grease on it and see if it changes anything. So many things that can cause rough idle problems. Plugs are new? NGK? All breather/PCV hoses are attached properly? No splits or cracks in the ends? Intake tubing is properly attached everywhere? Boost is controlled electronically on that year? Boost control valve is clean and connected properly? 1 Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted April 5, 2017 Share Posted April 5, 2017 cel on? scan for pending codes - maybe tumble generator valve runner is stuck? heck - maybe a SEaFoam treatment would help? Link to comment Share on other sites More sharing options...
Logan K Posted April 5, 2017 Author Share Posted April 5, 2017 IT HAS a major leak from the throttle shaft at the tps side. No question about it. I know this is the problem, I was looking to see if anyone else had encountered it before and had a cheaper fix. Thank you for your help =) Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted April 5, 2017 Share Posted April 5, 2017 being a WRX, you might search over at NASIOC. Link to comment Share on other sites More sharing options...
yatyesam Posted August 10 Share Posted August 10 On 4/5/2017 at 2:21 PM, Logan K said: IT HAS a major leak from the throttle shaft at the tps side. No question about it. I know this is the problem, I was looking to see if anyone else had encountered it before and had a cheaper fix. Thank you for your help 😃 Did you ever resolve this? Am having the same issue and can't find much info on how to replace seals, or type of seal. Fsm doesn't show disassembly of throttle body Link to comment Share on other sites More sharing options...
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