1999 taurus, swapped and checked everything. aside from bad cylinder not sure what else to do. had a head gasket breach and replaced a couple years ago cly1 was the area that breached. recently had a problem with the flex pipe and code went away briefly a couple times until repaired. also when driving at speed and i put it in neutral the rpms go up to aproxx what speed is 60mph/2500+rpm.
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