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rough idel no codes,new iac pcv maf intake manifold plugs wires coil pack tps egr and egr solinoid vaccum lines and changed fuel pump and thenp0453


james 53

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no codes rough idle
 


Dirtman

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james 53

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now that i have po453 fuel tank pressuresensor circuit,high input why?
 

ericbphoto

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Too much pressure in fuel tank, I guess. Try removing the fuel cap and see what it does.

The vent in the cap could be clogged. Or maybe something is wrong with the charcoal canister vent doohickey system.
 

Dirtman

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It's up there.
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Bad or clogged canister vent vavle, clogged canister, bad gas cap, bad pressure sensor, bad wiring to the pressure sensor, clogged vent lines...
 

james 53

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took loose vac line to canister and it strated to run better but not right ,still has shake at idle not as bad
 

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