Super high idle in park (MAL code 24)

[GNbythebay]

When the car is in park it idles at 2k-2.2k and in drive it’s drops down but still will be a little high for liking. When it just started to happen I had mal code 24 but than that code went away but it still has the high idle. When I’m actually driving the car seems fine but at a dead stop or in park it’s high on the rpms. I looked up mal code 24 a little and read it might have something to do with the speedo. My factory speedo works but my scamaster mph shows 0 all the time. Can someone help me!

 

[ScottHeidinger]

What is your TPS and IAC reading at idle?


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[GNbythebay]

What is your TPS and IAC reading at idle?


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TPS at .42 I’m pretty sure. I have to check later on the IAC. I will let you know

 

[laws69cars]

I had the same problem. In my case I swapped the IAC sensor and all good now.

 

[ScottHeidinger]

Likely have 2 separate issues. IAC and VSS


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