[Zarbuck]

Well I know the guy I bought it from was charging the battery so the car could be driven but the car ran just fine for several days after that. I guess it could have caused some serious damage but it seems odd that it took a few days to show up.

I tried putting the old temp sensor back in the car to no effect.

When the car was running the alternator was working just fine and charging the battery.

I don't know what the voltage of the battery is right now.

I don't own a meter.

Before I bought the car the only thing that I had read was about the 944 was the maintenance schedule and a list of problems to look for when buying a 944. Every thing mechanic seemed fine on the car other than the alternator being out.

I spend a good chuck of time reading Clarks this weekend and have gone through the trouble shooting for the ignition system (IGN-04) and most of the page on the fuel supply (FUEL-16) and pretty much came to the DME on both. I tried the tapping trick with no luck, so I pulled the DME and opened it. There are two pins on the back side of the upper board that look black and the board has small signs of heat damage around them. There is also some rust in one of the corners of the case and a couple of small yellow/brown spots on the back side of the top board. The water damage looks to be old, not sure this is what killed the DME but I'm sure it didn't help its life span very much.

The DME unit in my car has the parts number 944.618.121.04 made by Bosh but the replacement units I have seen for the car have part numbers of 944.618.121.DX made by Porsche. Is this correct and normal? Has my DME already been replaced in the past?

Any other suggestions or ideas?

I'm trying to decide if I should replace the DME just to discover what other electrical problems might exist or if I should just cut my losses and sell the car before I put even more money into it. I really want to fix this car but I'm just scared that its going to be one thing after another untill I have spent so much that I could have just bought a second one that actually runs.

Thank you all for all the information you have already given me and thank you again in advance for any additional information you might have.