118,000 miles. I got it about 20000 miles ago and am not sure when timing chains etc were replaced. I did NOT do a compression test but did just test oil pressure. It was about 70psi cold, dropped to around 20psi when warm. At 2000rpm, pressure was around 65psi. P0021 is still only code but I...
2010 Expedition. First had a code for #4 coil. Changed all coils and plugs. Code went away but p0021 appeared along with a rough idle. Has progressively gotten worse and now idles rough, shakes and struggles uphill and jerks at higher rpm. Changed oil and filter, new VVTs on both sides, also...
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