Just fitted a MD321, 740cc inj, FMIC, FPR, Headers and up-pipe. Started the car last night and ran like a bag of ****. Eventually steadied out a bit but then went into fast idle and threw up a fault code of 24. Its related to idle control system malfunction.

Any ideas on where to start looking? Or is it simply because of the mods and will be fine after my remap?

 

Yup, code 24 is the idle speed control circuit.

It will have flagged the fault due to the fact you are massively overfueling and your idle speed is screwed up.

The Ecu will be telling the idle speed motor to open & shut to try and get to it's target idle speed but because of the over fuelling this will be unachievable and the Ecu will assume that there is a fault with the idle circuit and flags code 24. this will sort itself after mapping.

Phil

 

Thanks for the response. Will it be safe to drive to the mapping session as it is? Its about 140miles i need to do.