melted cats`

[SHOracer86]

To start off i live in Massachusetts and the inspections up here are brutal.So one day my car was acting weird and came to find out it was clogged cats . So i broke out the stuff inside and found that alot of it was melted. What could cause this? I need to know cause im contemplating on whether buying an aftermarket y pipe wih high flow cats or jus goin to the junk yard and pickin one up to pass inspection.

 

[sho_me92]

junk yards cant sell any emmison parts so your best bet is after market here is a link for some magna flows.. good luck

http://store.summitracing.com/partd...PE-23355&N=4294907479+400636+115&autoview=sku

 

[operdot]

melted cats are a cause of fuel igniting inside them, you best bet to find the cause of the problem is finding out if you are running rich.

 

[jedhead]

I would replace the thermostat and the temp sending unit for the EEC-IV. Those are most likely cause of your engine running rich.

Bob

 

[SHOracer86]

yea i replaced both of those sensors after i gutted out the cats and i have an a/f ratio gauge installed and it is always at stoich. My main concern was buying the y pipe with cats and the same thing happen to the new ones.

 

[SHOtime2511]

if your running stoich all the time now then you should be good to go

 

[shoandtbird]

if you shop around you should find someone to install a custom y and magnaflow for 300-500 thats what i did and its all good now!

 

[Wht91+]

I would replace the thermostat and the temp sending unit for the EEC-IV. Those are most likely cause of your engine running rich.

Bob

Agreed

 

[SHOracer86]

Well i have a dynomax catback on there right now but thanks for the input.