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Glowing Red Cat

1145 Views 5 Replies 6 Participants Last post by  CLRracer, 
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Help ! My 88 5.2 Liter Ramcharger is running rich again ! I changed the fuel pump a couple of months ago because it was running to rich and I diagnosed it to be the fuel pump over pressurizing. A couple of months later it seems to be doing it again. Is it a bad aftermarket replacment or is there something else ? The cat is glowing red again so I figure the fuel pump has crapped out ! Dosn't the regulator suppost to open up if there is too much fuel ? Any answers ?

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CLRracer
if its running rich, check ur coolant temp sensor. if its bad, it can cause the truck to run rich.

Duane
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