catalytic converter
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Junior User
Joined: Nov 2002
Posts: 97
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From: Morristown USA
catalytic converter
I've got an 89 F-250 with a 460 motor and C6 tranny. I put a new muffler and tail pipe on, removed the maifolds and put new studs/gasket on and replaced the donuts on the manifolds. And I still have an exhaust leak !!!! It appears there is a factory hole on top of the converter. Is this for the air pump (which has long been removed by someone else)? I've got two pipes already on top of the cconverter. If I put a cheater pipe on instead of the converter, would my O2 sensor go crazy? If I put headers on. would I still need the O2? This thing is lousy on gas and I'm trying to tune it. So far I've put a new O2, EVP and cleaned the EGR. If I replaced the complete exhaust how would I bypass sensors?
Any and all help is greatly appreciated...
Any and all help is greatly appreciated...
Senior User
Joined: Jul 2003
Posts: 425
Likes: 0
From: WA
catalytic converter
Mine has two holes which are to pump air into the convertor. The convertor doesn't work optimally without the extra air. The O2 sensor is ahead of the convertor in the scheme of things. It is in the Y- from the exhaust manifolds where the they join to the convertor flange. Your eec will be very unhappy if you remove it.
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Junior User
Joined: Nov 2002
Posts: 97
Likes: 0
From: Morristown USA
catalytic converter
This is the one that goes from the manifold to the exhaust pipe. I had a local shop do the welding, but it was basically the clamp that the exhaust studs hold on to. It came as two halves and they slipped them around the pipe and welded them together.
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