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got my 88 coupe back...but the cats glow red hot??

5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

got my 88 coupe back...but the cats glow red hot??

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Old 01-05-2009, 04:52 PM
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Green Machine 123
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Default got my 88 coupe back...but the cats glow red hot??

well its not the exact same one but it will do...
i paid $3200.00 for it and it has-

3.73 gears
aluminum drive shaft
drive shaft loop
3 core rad
Mac cold air intake with mass air conversion
Mac exhaust from headers to tail pipe
eibach prokit
edlebrock 70/30 shocks
frame connectors
hurst shifter
battery relocated to trunk


i noticed that the cats glow red hot...maybe runnin too rich? not sure what this means
any ideas would be great...thanx
Attached Thumbnails got my 88 coupe back...but the cats glow red hot??-dscf7657.jpg   got my 88 coupe back...but the cats glow red hot??-dscf7658.jpg   got my 88 coupe back...but the cats glow red hot??-dscf7661.jpg   got my 88 coupe back...but the cats glow red hot??-dscf7730.jpg   got my 88 coupe back...but the cats glow red hot??-dscf7764.jpg  

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Old 01-05-2009, 06:50 PM
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duneking905
 
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it could be that they are starting to get clogged. had same problem on f-150
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Old 01-05-2009, 06:58 PM
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cammedlx
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Originally Posted by duneking905 View Post
it could be that they are starting to get clogged. had same problem on f-150

X2 Sounds like its time to get a new o/r pipe...
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Old 01-05-2009, 06:59 PM
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SonicBlueFiveSlow
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Originally Posted by duneking905 View Post
it could be that they are starting to get clogged. had same problem on f-150
x3, the cat on my brother's old Buick was clogged, got red hot and caused a fire.
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Old 01-05-2009, 06:59 PM
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Green Machine 123
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off road pipe?
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Old 01-05-2009, 07:00 PM
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FORD TOUGH
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How hot are they getting? Some of the causes of a hot cat are improper ignition timing, fouled spark plugs, air pump failure or a compression leak (burned exhaust valve). It could also be clogged. But other causes may include lean misfire (check for vacuum leaks, leaky EGR valve, low fuel pressure or dirty injectors). If the outlet temperature on the catalytic converter is more than 500 degrees hotter than the inlet that indicates unburnt fuel in the exhaust.
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Old 01-05-2009, 07:02 PM
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Green Machine 123
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they glow red....very hot.....i have been told else where that its unburnt fuel.....
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Old 01-05-2009, 07:02 PM
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Off road pipe= Not cats...And if and perhaps it was one of the problems mentioned above the headers would glow before the cats...
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Old 01-05-2009, 07:03 PM
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true the headers look fine when runnin
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Old 01-05-2009, 07:08 PM
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Originally Posted by cammedlx View Post
Off road pipe= Not cats...And if and perhaps it was one of the problems mentioned above the headers would glow before the cats...
A customer had a mid 80's ford truck and the cat on it was getting like 1100-1200 degrees (you could not lay your hand on the floor board) that whole thing was glowing orange but the manifold on it was not.
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