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Search: Posts Made By: daddy39
Forum: 4.0 SOHC / 4.0 OHV Tech 01-17-2013, 02:54 PM
Replies: 2
Views: 1,459
Posted By daddy39
p0153,p0171,p0174

i have a 99 4.0 that is idling a little rough. pulled codes and got p0153,p0171,and p0174 could a spllit flange on the exhaust after the cat be causing these problems?
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