MainePorsche

Don't despair - the drying will take a bit.
In the interim, I would check all your fuses and make sure the area around (and behind) the (CE) Central Electric panel is dry.

Orantes

Check connection to MAF. MAF can also get moisture behind connector plate. I know this from experience! Try running without the MAF connected to check out things.

Lizard928

The engine bay gets soaked everytime you drive in the rain.......
I actually pressure wash a good deal of my engine bay. But this is after doing a full top end refresh.
Never an issue.

17prospective buyer

How?? Like almost every other street legal car ever made, the 928 uses weatherstripping to reduce that... the only way water should be able to get in is if the seals are bad/missing, or through the gap between the hood and fender.

namasgt

That sounds like a MAF problem. Check the connection for your MAF. Also, when you put the key on "ON" without actually starting the car, do you here any clicking sound coming from the engine bay? If yes, you have a bad LH. I would think any water would have dried by now.

Dave928S

I've had success in drying out engine bays by putting a small electric fan heater, under the car, pointing under the engine compartment with the hood shut. If you position the heater so that the air rises under the motor it will warm up the whole engine bay and dry things naturally, without having to use compressed air which can sometimes blow water even deeper into a loom, plug or electronic enclosure. I've used compressed air after that to get rid of any remaining moisture, and then warmed everything again.

928mac

I'm with Colin on this as I built a new harness when I installed the tec 2 and be dam'd if ILL go to a car show with a dirty engine.
That said, after a wash you have to blow some connectors out

safulop

Is this a risk if you run without belly pan in the rain?

-Sean

Speedtoys

1) Hosing down engine is not a certainty of problems..but based on the pre WW2 connector plugs our cars use, age + water can be bad at some point.

2) WO pans, it wont soak, just get more road crap up there, a little..but not a big deal, IMHO.

928mac

I have never had a belly pan, ... just a belly

AirtekHVAC

Ditto.

Landseer

Pull distributor caps and coil wires.

depami

From the symptoms described I would suspect fuel rather than spark.

I would start with MAF, Temp, TPS, etc. Everything that affects fuel, especially at idle.

But checking the caps and wires is easy enough so it can’t hurt. Unless something breaks in the process.

Lizard928

When you drive on a road air and water (when raining), go through the radiator and get carried all over the engine bay.
I'd like to see you stop that!

Speedtoys

So..we need a front-end Air Pan to stop this from happening?





Sounds expensive.