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Re: high idol in park/rpm surging
Agree with Schurkey that it's best to get scan working. Hard to troubleshoot a computer controlled engine without data. See if a local parts store like AutoZone can read it. Having said that, throttle position sensor jumps to mind as possible failure. Seen that on at least two of my vehicles. But without data, that's just one BB from the shotgun.
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Lloyd
18 Charger ScatPack 392
18 Lincoln Navigator L (Hers)
98 Grand Prix GTP Sedan (RIP)
99 Grand Prix GTP Coupe (to the moon)
05 Wrangler Unlimited (Junior's)
03 Explorer XLT (Sissy's)
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