Is your Throttle Body grounded?

[4Grim]

Are you guys talking about the green wire with the "boot" plug?

Turbo TB:

N/T TBSorry for the blurry pic)

 

[steve]

THIS

 

[4Grim]

Sorry steve...didnt see the enlarged pic. I never had that bracket on mine either. I grounded mine to the firewall..but with the N/T throttle body..it doesn't have that designated spot unlike the turbo TB, so I improvise a new location.

 

[steve]

No problem. It made a difference on my car. Apparently it was sometimes grounding and sometimes not.

 

[gtluke]

the non turbo throttle body doesn't need it, since the TB bolts though the throttle body.
on a stock gvr4, the bolts touch the TB elbow, pass through the throttle body into the intake. if your intake and throttle body gaskets are good, and your bolts aren't bent and centered like they should be, then the throttle body is totally isolated from the elbow, and the intake and it has NO ground because of this, which is the reason for the seemingly useless bracket.
on some cars though, the TB finds a ground though chance one of the bolts touching the TB on the inside, or burrs in the aluminum around the intake/throttle blade area. you might be lucky and its grounded without it, but most likely if you don't have that strap/bracket, you have no ground.

 

/ubbthreads/images//graemlins/uhh.gif my tyte JDM TB doesn't have one.

 

Quote:
he also has a BOV cover, which never existed on USDM gvr4's so he must be OEM anal like me



I've never even heard of such a thing, let alone seeing one (besides at the meet, which I somehow completely overlooked /ubbthreads/images//graemlins/rolleyes.gif ) My car still has the bracket. I think several different VFAQs say it's useless and you don't have to reinstall it, which is why a bunch are missing. I somewhere read though that it functioned as a ground strap so always put it back.

After putting a new circuit breaker in the trunk last night, I decided to add some grounds while all my electrical stuff was out. Grounded both the TB and CAS to the chassis, added two new chassis grounds, and one straight to the battery terminal. So far no different.

 

Yea it didn't solve my problem with my idling. It probably does solve some cases but I think I need a new Idle air control valve.

 

[curtis]

Hell Just froze Steve made a technical post... /ubbthreads/images//graemlins/applause.gif

 

[Rausch]

....that he stoled (lol) from luke! /ubbthreads/images//graemlins/rofl.gif

Quote:
thanks for the credit, pee hole bug

 

[boostedinaz]

Since mine wasn't grounded and I had a few extra minutes I made a quick ground wire.

 

WTF do the JDM peoples do then? /ubbthreads/images//graemlins/dunno.gif It had a small bracket on the other end of the Intake Mani. The Cyclone or RS TB's must be the same

 

^^^ I'm not sure, but I've got a JDM TB and Cyclone intake in a big box of parts. I'll check it out tomorrow; compare it to my US setup.

 

[steve]

Quote:
....that he stoled (lol) from luke! /ubbthreads/images//graemlins/rofl.gif

Quote:
thanks for the credit, pee hole bug





I know, all your tech knowledge comes to you magically in a dream. /ubbthreads/images//graemlins/rolleyes.gif

/ubbthreads/images//graemlins/rofl.gif

 

[belize1334]

On the JDM tb, the closed throttle switch is part of the harness for the tps, so it probably references a ground in the harness.