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Discussion Starter · #1 · (Edited)
2010 sxt engine light ztays on, someti?e it flashes and lossof acceleration
under spark plug thereisblack gunk, hard, cant vaccum

is that an issue? How to clean?
changed plugs and coils
no oil leak, old plugs werea little black dusty, but not terrible. Old coils white residue inside. Also changed air filter

random missire cy,inder three missfire.
thinjing ahout changing tbrottle body or sensor? How to check wires goinh to coil?
 

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The wires going to the coil can be tested with what are called noid lights...they plug into the coil harness and flash when the ECU tries to activate the injector.

You said you replaced the plugs and coils...did you use the correct copper NGK plugs and Mopar coils? Aftermarket coils can cause all sorts of problems.
 
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