High idle

[flinty303]

Just out of curiosity, what’s the likely cause of a high idle? It sat for ages and just ran it in for mot, before it sat I took it for a really long drive and on way back I noticed the high idle but thought it was the heat and long drive?


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[andrejdms14]

I have the same problem my Sr idles at around 1.5 tried adjusting but nothing. Dunno if its to do with hdev? Maybe?. But once warm its still higher than normal.

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[flinty303]

Yep mine Hdev 2a might get a propper tune on it see what happens


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[piman2k]

I don’t think the high idle is to do with your chip.

[markcro]

Vacuum leak somewhere? Mine started idling high one morning as the pipe to the boost pressure sensor had come loose