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420A High idle

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Jonnychance

Proven Member
84
4
Jul 2, 2017
Cashmere, Washington
I took of the battery and tray to get through to the fill plug for the transmission. Couldn't get it off that way, so I put the battery back in to get the car lifted up again. Now its revving to 2000rpm on it's own, itll jump to 2300rpm when I start it. It goes down to normal, then after a bit back to 2000rpm and it wont go down. Idk what happened all I did was take the battery off...
 
So I checked the wires and didnt find a cut. But my AC was on before I took everything apart and now it revs up if I turn the AC on more otherwise it revs on its own around 1,200. Its almost like the car is reacting to the AC. Hopefully the video works.
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If you cut one of those wires you need to fix it.

I don't remember if that connector runs to the ecu or if it goes straight to the gage cluster. But if it hits the ecu first, your car is probably revving because it thinks it's in motion.
 
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