88 mustang with glowing converter

[ssettle]

Can anyone help? The cat. converter on the left side is glowing. I have changed both of the coverters on the left, checked the valve pressure, and changed the fuel injectors (tune up also... new plugs, plug wires and cap) I don't know what to check next. Any ideas?

[cheap5.0]

Is the car running poorly? On my VW it was not uncommon for it's single cat to glow after i ran it hard. It was't cherry red, but you could definitly see it glow, no matter what the light conditions were.

[HiFlow5 0]

What year is your car. Do you still have the smog system intack, are the O2's new?

[ssettle]

Originally Posted by HiFlow5 0

What year is your car. Do you still have the smog system intack, are the O2's new?

This is a 1988 GT 5.0 conv. This car is from california. It still has all the orginal smog system. The 02's are not new, but when I swapped the right one over the left still glows. (the right cat. conv does not glow) The car runs and idles fine. Is it possible I have a computer problem? The check engine light is not on.

[HiFlow5 0]

Well, the cat is clogged for some reason, the only fix is to replace it. For some reason, weather it be you were running rich for a while, bypassed the smog pump, or a multiple of other things could result in it's demise, especially if it's original equipment from 88.

[brentmcq]

If you already put new converters on and still have the problem maybe you have something clogged between your converter and tailpipe. Have you checked the tailpipe for a banana? If you had your distributer out you may have it off by one tooth causing your timing to be out of whack.