Hello all,

While reading a post about " Modern Brake upgrade" I was made aware of changing the check valve and booster filter may help with braking.
So, I ran out to my 1986 GT V6 to try to find these items. I was able to locate the Check Valve on the brake booster so I set out to find the Booster filter ...
From the post I read ; I was to follow the line (metal) coming from plenum on the throttle body back.. Mine looks like it terminates on the valve cover near the fire wall.
Does this mean my 86 doesn't have an inline booster filter or am I looking in the wrong place?

While looking for the booster filter; I found the following hose and have no idea what it is or where it should terminate.
I followed the line from open hose down the firewall to the air filter can from what I can tell.
Can you guys help identify it and tell me where to plug in the hose?

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JM

Redundant after recall work...
http://www.fiero.nl/forum/Forum9/HTML/000032.html

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My World of Wheels Winners (Click on links below)

3.4L Supercharged 87 GT and Super Duty 4 Indy #163

Make sure that tube is either plugged at the end, or disconnected from the air filter canister and that hole then plugged. Otherwise, unfiltered engine bay air is continually being sucked into the filtered side of the air filter assembly/intake.

Thank you very much... That solves it.. I have capped it off.

Now to find the elusive Booster filter. Is it safe to say that some fiero may not have it?

quote Originally posted by str8maxn: Now to find the elusive Booster filter. Is it safe to say that some fiero may not have it?

On the firewall. Not used in later years, but not sure when they stopped.

[This message has been edited by fierosound (edited 10-17-2020).]

FIEROSOUND>>> Thank you .. I think I found it but confirmation would be appreciated
Picture was taken from the drives side looking towards the firewall.

[This message has been edited by str8maxn (edited 10-17-2020).]

quote Originally posted by fierosound: On the firewall. Not used in later years, but not sure when they stopped.

Yes for 84-86 Fiero. Gone 87-88 Fiero that have bigger booster vac hoses and tubes.

Replacing the filter w/ Dorman et al plastic is not good. More so w/ V6 w/ exhaust parts close to and can melt it.
If old is plugged, Could try cleaning old one but not sure just how is safe.

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quote Originally posted by str8maxn: FIEROSOUND>>> Thank you .. I think I found it but confirmation would be appreciated Picture was taken from the drives side looking towards the firewall.

Yup. Hose from tube under manifold to tube going through firewall.

quote Originally posted by str8maxn: FIEROSOUND>>> Thank you .. I think I found it but confirmation would be appreciated Picture was taken from the drives side looking towards the firewall. https://i.postimg.cc/s2xs7RFX/booster-filter.jpg

Yeah, that's it.

I deleted that thing, replaced it with a hose fitting.

Is deleting the filter the preferred method or new filter?