Thanks for the help

 

Bumping this up with a quick question.

How screwed am I if I took the TPS off without marking it?? I need to replace the seals, but I wanted to clean the entire throttle body as well. So I removed it before I got to the How-to on marking off the TPS. Is this something that will be a pain in the *** to get correct??

 

you will need to plug it in and hook your car up to the computer and run evoscan and log without actually turn the car on. you can see the value of the TPS and slightly move it enough til it almost matches where it was while off throttle before changing the shaft seals

 

is there any specific way to make sure you get the throttle spring tension perfect?

im not at all new to working on cars, but im a little wary of fahking up the tps calibration ad/or the spring tension...

 

Sweet write up

 

Just did a boost leak down and found that something near my TB is leaking. I'm assuming that it's the shaft seal but not 100% certain. Question is this: When doing the boost leak test, the leak the TB starts gassing out at about 5psi - is it capable of leaking that much? I should mention that when driving, my boost doesn't go past 11psi. Thanks.

 

Can you feel the air coming out? My shaft seal on the tps side was leaking really bad like yours. I'm surprised I could boost up to 24psi. I just did my seals yesterday and without changing my mbc I'm at 26psi.

 

When you say you cleaned the throttle body, did you clean all that black gunk on the butterfly, shaft and bore? I cleaned mine down to metal and my idle is around 1500-2000 RPM. After searching on here I found out that black gunk is suppose to be on there to seal the butterfly at idle. I almost posted on here asking if I should clean this off. I didn't. Now I have to take the tb off again and spray a dry moly lubricant. I'll post the link up later. Anybody else do this and what chemical did you use to reseal it?

 

Here is the link of instructions on why you shouldn't clean that stuff off and the chemical to put it back on.

 

Is this good way to test ONLY at throttlebody? Last week I did boost leak test and found huge leak from throttle spring. So, replaced shaft seal recently. I would like to boost test again but don't feel like remove air intake since I know it's only place leaked. thank you.

 

sub....good info

 

I wouldnt waste time with that and just pressurize it at the turbo with a compressor.

 

this, just do it and stop debating

 

Just replaced mine with the milspec seals. Start to finish at a comfortable pace... 15 minutes to pull the TB, 20 minutes to disassemble and replace seals, and another 15 to reinstall the TB. No more boost leak.

Thanks for the TSCOMPUSA2 for suggesting the screwdriver method of seating the seals. This worked like a champ.

 

Awesome. My Throttle body seals are leaking like a *****. Your info will definitely help me fix my problem. Thanks!