Usually Mild Mannered, But Behind The Wheel I...
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Anything above ~9.5V is acceptable. The higher the better, but it will almost always drop to at least 10.5V, if not lower, even with a new big battery and everything else being good. 9.76 is not a concern. If it goes below 9, you'd be sure that there's a problem with either the battery or the connections. -
It's new almost. Under a year old i think and I've tested it twice at supercheap -
Glue the head from a Pez dispenser on it. Goofy, or Winnie the Pooh, so something.
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By joshuaho96 · Posted
Adjusting the idle screw is usually (emphasis on usually) just covering up deeper issues. Stuff like the cold start valve not closing properly. Throttle shaft seals on the way out. Coolant temp sensors getting out of spec. Coolant temp sensors especially can be a bear to diagnose because they can fail subtly. My dad just spent weeks chasing down his high idle. He cleaned the coolant temp sensor and everything but the resistance curve just drifts over time and if it's been 20+ years they also get super slow to respond as well. Has a massive effect on fuel economy as if it's off the ECU is going to run richer and command high idle for far longer than it should otherwise. -
How old is the battery, it's more likely your battery is on its way out.
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