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murphyv310 · 11th June 2016, 12:05

Hi.
Have you checked the nearside plenum chamber where the ECU lives? This area needs to be dry and stay dry, there are drains and these can get blocked with leaves and silt, make sure the drains are clear, plenty info here about that.
The other thing that comes to mind is the wiring can get abraided on the nearside chassis leg, it's a bumper off job but copious amounts of water in heavy rain can cause electrical leaks that can cause odd faults.

Spraying WD40 over plugs won't help, they are pretty well sealed anyway so it's unlikely water or WD40 would get to the contacts. If you suspect a wet plug you need to separate the plug and spray the WD into the the plugs connections.
Does your car have an under-tray?

11th June 2016, 12:05	#5
murphyv310 This is my second home Hyundai i10 998cc Join Date: Mar 2012 Location: Kilmarnock Posts: 6,602 Thanks: 2,088 Thanked 2,298 Times in 1,349 Posts	Hi. Have you checked the nearside plenum chamber where the ECU lives? This area needs to be dry and stay dry, there are drains and these can get blocked with leaves and silt, make sure the drains are clear, plenty info here about that. The other thing that comes to mind is the wiring can get abraided on the nearside chassis leg, it's a bumper off job but copious amounts of water in heavy rain can cause electrical leaks that can cause odd faults. Spraying WD40 over plugs won't help, they are pretty well sealed anyway so it's unlikely water or WD40 would get to the contacts. If you suspect a wet plug you need to separate the plug and spray the WD into the the plugs connections. Does your car have an under-tray? __________________ Cheers from Trevor MM0KJJ Last edited by murphyv310; 11th June 2016 at 12:08..