![]() However, if the volume of water is too great, or the channels become clogged with leaves or other debris, this plenum will overflow directly into the DME compartment. There are drains at the bottom designed to drain this rainwater. This cowl is open to the enviroment, and thus will get rain water deposited into it. How exactly does the water get into the box? The DME compartment is located right next to the intake plenum cowl for the heating and air conditioning system. Needless to say, having the main computer for the car submerged in water is not a good thing. ![]() I have heard stories of owners who have opened this compartment, only to have a gallon of water or more come flowing out. If too much water is used, or if the water channels are clogged with leaves or debris, the water will overflow and leak into the compartment where the DME is stored (see the Pelican Technical Article on DME Chip Replacements for the location of the DME in the engine compartment). While perfectly adequate for anything that nature may throw at the car, the channels are woefully inadequate for a car wash. I used to have yet another 2 1/2 nickel, but sold it to my stepfather. The water relief channels of the car are not beefy enough to withstand a significant influx of water onto the car, or the windshield. Start with the relay - it is the easiest and cheapest item to replace. If you see an improvement, then you might have found the problem. Try swapping it out with a known good one if you have one, or swap it with another one on the board (like the one for the fog lamps). BMWs, it's relay number two, the white one, next to the fuel pump). One of the first steps I would take is to identify this relay (on E3. Even if the relay is intermittent, it might show up as the engine running rough, or stalling, or any other number of failures. It's not uncommon for the main relay to have its contacts become corroded and fail to work 1. Many people I have spoken to have had problems with the relay that controls the DME computer itself. If the code readers are having trouble connecting to the unit, then you need to look further. See the Pelican Technical Articles, Code Reading and OBD- II Diagnostics for more details. First, if you are having problems with your car, you should check to see if the computer is giving out any fault codes. In this tech article, we'll talk a little about the DME, how to troubleshoot its problems, prevent damage to the unit, and repair or replace the unit. The ECU (Electronic Control Unit) will cause the engine to run poorly or to stop running altogether if it becomes damaged. ![]() As such, it can be considered the brain of the car. ![]() Answer 1: The first thing to check if your refrigerator stops working completely is to make sure.īMW E3. ![]()
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