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4.0 Running very rich


86ranger4.0

Well-Known Member
Joined
Mar 25, 2012
Messages
45
Vehicle Year
1986
Transmission
Manual
When my 4.0 heats up it runs very rich. Enough that it Boggs down. When it gets to higher Rpms it goes away. New iac tps plugs wires. What do u guys think? Codes r 67 85 29 41
 
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