Quote:
Originally Posted by caffeineaholic
Hi all,
Before I head to the junkyard, I was wondering if anyone knows where to get an EFE TVS (Early fuel evaporation thermal vacuum switch). The EFE valve is AKA a heat riser I believe -- but I'm looking for the thermal vacuum switch for it. I need a new or good used one because my engine seems to overheat because the EFE valve remains open.
This eBay page shows what it looks like: http://cgi.ebay.com/ebaymotors/1980-...item519400ec27
I called my local parts dealer and they said they've been discontinued... This part was used up until the '90 Caprice I believe and he said those too are discontinued. In fact, he believes that they don't make them anymore and he said they can't even get them.
I checked my usual places, http://www.rockauto.com and eBay. A user on eBay has a few for a corvette with similar year ranges but no info on the temperature rating (I asked and am awaiting a response).
Thanks. |
this vacuum switch is for the exhaust manifold output valve ? this is to restrict exhaust until the engine gets to about 160deg f. then it opens the butteryfly valve at the manifold exhaust exit..
If so this is not necessary. I deleted my exhaust valve when it rusted off..what I did was using s/steel wire of .o30 in dia wired it in the full open position.. did not notice any bad effects ,,actually engine ran better when cold...
IN the rust belt these rust up in the closed or partially closed position , then the engine does overheat and acts like a plugged cat converter ..