98 ram 1500 5.9

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bud1030

Junior Member
Joined
Mar 6, 2026
Posts
1
Reaction score
0
Location
Pa
Ram Year
1998
Engine
5.9
Keep getting a p1391 code. Did tune up replaced all sensors .if I drive it cold light comes on when it gets warmed up runs fine and no check engine light. Any ideas?
 
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