Limp home mode troubleshooting?
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Limp home mode troubleshooting?
I have an odd problem that I need some expert assistance with. My SC400 idle is irratic and surges uncontrollably (undrivable). I found that if I disconnect the air sensor -it is driveable. I am guessing this is because this puts it in limp home mode. So if this is the case -and having swapped the IAC, fuel pressure regulator, spark plugs/wires, air sensor and EGR valve -what can cause it to surge like this and then run good in the limp home mode with the air sensor disconnected? Can the ECU cause a problem like this?
Anyone else ever have a problem like this?
Anyone else ever have a problem like this?
Last edited by UZinator; 12-08-14 at 01:21 PM.
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