Rough Idle In Drive

So here's the scoop:

 

The car idles great when in neutral or park, but if the car is in drive when I come to a stop it vibrates like a mofo. I'm assuming it might have something to do with the converter in which case I'm SOL but if this is a common problem and there's a quick fix I'd be interested to hear it!

 

Thanks in advance!

I have the same issue. I was told it was the torque converter...

 

...that was 30,000 miles ago, lol. Wish I could afford to fix it. I'm always knocking it into neutral at stops.

My car is the same way but it only does it when it is cold. Does yours do it only when it is cold or all the time?

Nah it does it all the time. It's pretty annoying and I find myself throwing it in neutral whenever I'm stuck at a red light.

It's annoying when my car is cold.. I can't imagine dealing with it all the time. Everything starts shaking and rattling.

check your motor mounts.. they're probably on your way out

Ok question, how do I check my motor mounts and what am I looking for?

theyre on the Xmember

 

 

look for any cracks or abnormal wear..also check your pitch stop, sometimes those crack or the bushings go bad on those too

Ok, I'll hunt those down.

 

So... what's a pitch stop? Lol.

its the dogbone shaped thing that conects your tranny to your firewall

 

directly in the middle of the firewall, towards the top, connected to your transmission, ha

Like ZM sad, the pitch stop/torque dampener is connected to your firewall look half way up the center of firewall and right under your throttle body to find it, a black dogbone with bushings on each side. The motor mounts can be seen from under car or looking from standing view into engine bay look straight down from each strut tower and follow front frame back a little and u'll see them

 

FYI, I replaced stock pitch with Beatrush pitch mount and insert a RalliTek transmission mount insert and I get more vibration. But at least my car feels more connected to the drive-train now. Still need to do the rear diff.

 

I do believe it's the torque converters. Try that TransX stuff see if it goes away, maybe it can help that too.

 

Group N pitch $45

http://www.importimageracing.com/p/Group-N-Pitch-Stop-Mount.html

 

Beatrush pitch $80

https://www.upscaleautomotive.com/p-9385-beatrush-pitch-stop-mount-for-02-07-subaru-wrx-sti.aspx

 

4eat Auto Trans insert $32

http://www.rallitek.com/wrx4eau.html

I've had that before too...so many squeaks and rattles and God know's what. But with the warmer weather it's calmed down. Yeah, in neutral it's much much better, but even in drive I'm hardly noticing it anymore. Gonna change the tranny fluid soon, get the TransX stuff out

Mine will randomly vibrate pretty badly. Other times it's exactly as it was around 10kmi ago. There's really no rhyme or reason to it; it happens cold, hot, after heavy/light accel/decel. One of the mounts looks newer than the other, so I'm assuming that COULD be the culprit. Just in case, I've procured a set of 08 STI mounts, which some one said would fit, and hope to install them some time soon.

yup, remember that if you do upgrade you'll get more vibration like mentioned above because youre going stiffer..

 

any EJ engine mount will fit with any EJ engine, just make sure you buy 2, some websites sell them as

"each"

yup, remember that if you do upgrade you'll get more vibration like mentioned above because youre going stiffer..

 

any EJ engine mount will fit with any EJ engine, just make sure you buy 2, some websites sell them as

"each"

 

I'm going to keep one stock one GR, and use zip ties for the dog bone! Don't worry, I'll use at least three zip ties for extra strength!

Yep thats your torque converter. TO: 98LGTLOVER thats how it'll start out only doing it when it's cold then it'll get worse and worse.

 

YOUR TORQUE CONVERTER IS A $35.00 PART FROM AUTO ZONE!

 

Aamco Transmissions will check your torque for FREE!

 

P.S when your torque converter finally goes out your car will not move, so you guys experiencing this might want to fix it.

For god sakes get a IPT TC for around $500 do yourself that favor along with using TransX for 1000 miles to make your VB(valve body work better).

 

http://www.importperformancetrans.com/subaruauto.shtml

unless your going to send them your core first It's $790ish VS $35 for a brand new OEM one

 

Hmmmmmm.........That seems like a hard decision lol Unless your racing your car which most guys don't that seems like wasted money

How does transx make your valve body work better?

How does transx make your valve body work better?

 

 

http://legacygt.com/forums/showthread.php/lazy-transmission-133233.html?t=133233&highlight=transx

How does transx make your valve body work better?

 

Gee gad, I guess I'll have to actually do my own research, huh???

Also, where are you finding a TC that cheaply? The cheapest I've found (even at AZ) is over $100

at autozone

[/url]autozone

 

Autozone wants $175+ for a torque converter in Milwaukee, WI. I don't know where you are seeing $35, but if its true that is a good deal.

autozone on south tryon street in charlotte North Carolina 28273 $35