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V8 Throttle Body Blanking Caps

Mick1988

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Hi I have a 1989 VN SS (factory Atlas Grey 5 speed) which I am slowly restoring. The first step is getting it roadworthy and over the pits. Only thing I have left to organize is to solve the issue of the car not idling. I have traced the issue to to rubber caps on the throttle body vacuum ports being cracked and perished. If I manipulate these around, I get idle back, but not for long.

So I went to Holden spare parts and the guy at the counter just stared at me like a stunned mullet. So I asked him to talk to my mate who is the parts manager and he told me they're not a standard cap and the vacuum lines they are blanking off are actually meant to be for something.

So my questions are.
1. What has been removed/bypassed on my car?
2. Does anyone know of a place that would make these caps?

Below is a photo of the vacuum ports on the throttle body and a photo of the two caps.

IMAG0097.jpg


IMAG0106.jpg


Cheers guys.
Mick
 

shreks vp

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i got 2 lines going from there to a canister or however ya spell it
 

delcowizzid

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they normally goto the charcoal canister we got caps on our NZ ones due to no emissions gear but mine are square ended not rounded like them carby looking ones so i has at a guess someones deleted the charcoal canister
 

Mick1988

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Cheers guys, bugger the canister then I don't want any of that emissions junk. Car has been across the pits without it and with steel wool in the exhaust and all they could pick on was a small bit of rust in the firewall lol. Anyone know where I can get a replacement?
 

wraith

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Expealidicous
 
Last edited:

Mick1988

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Cheers I found a guy who sells single black ones on eBay and contacted him. Kinda thought fluro ones might draw attention to the missing canister.
 

shreks vp

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or just run a bit of hose from 1 straight around into the other
 
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