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I have water on the passenger (right) side floor board of my 2001 996 base coupe. Here are the signs and symptoms, and hopefully relevant info: the water seems to drip from the AC vent. The car hasn't been out in the rain or through a car wash since I dried it out thoroughly. Drove it for about an hour yesterday with the AC on, and the passenger side is soaked. When parked, a healthy amount of condensate came out by the left rear wheel (that's the driver's side, opposite the side where the floorboard is wet), bit nowhere else.
Based on the great info on this site, I checked all four drains under the front cowl. All four were unobstructed and dry as a bone, but there a couple of small leaves in two of them so I cleaned them out. My car has the little clear window over the VIN and the slotted drain grommets, so it looks like the TSB has been applied. I also removed the cover panel on inside of the passenger side rear wheel well. I couldn't positively ID a drain. The area was relatively clean - a little dusty, but no discernible mud, etc. Also very dry. I took out both rear speakers and felt around from the inside of the car all the way down to the bottom of the wheel wells. I suppose that tip only works on the cabriolet...it was clean and dry inside both and there was no drain line .
I ran the car with cowl under the hood/bonnet off and the AC on. The AC lines get cold and water condenses on them (both under the bonnet and running along underneath the car on the passenger side), but it doesn't leak or drip excessively. While it was running, I looked underneath, and saw water dripping from the plastic skid panels under the center of the car up forward. It didn't do that yesterday. I can't imagine that pulling out a couple of dry leaves from the drains under the bonnet made a difference...could it have?
I'm pretty sure that the issue is condensation from the AC system, since it's getting wet from no other source (and it's clear water, not coolant). It would help me to know: where is AC condensation water SUPPOSED to come out under the car when everything's working properly - front, rear, both? Is there a drain hose from the AC condenser that I can access somewhere up front other than as mentioned? I apologize if this is covered clearly somewhere else. I'm just kinda flummoxed...what am I missing?
Thanks very much for any guidance (even a link to some obvious other posting I should have found already)!
Long story short, one day noticed water in the drivers footwell, found a leak on the door to body wire harness. Dried car out. Car was 100% before this, seemed to be OK even when wet.
2 Weeks later, car started getting random faults on the MFI (Brake, ABS, PSM, etc). Would clear, then come, then clear. Battery is about 7 months old (replaced when I first got these errors) Ton of errors in durametric, then one day would not start or move out of if it did start.
Peeled carpet back. Found 3 wires. 1 Crimped, 2 soldered. 1 of the soldered was gone, so cut that out, butt soldered and then repeated for the other 2 as I heard they usually go bad.
Cleared all the DTCs with durametric, car started fine, all looked good in happyville.
2 weeks later got a check engine light, read codes, p0119, p0117 and p1552 (from memory, may be wrong). Seemed to be the engine temp sensor. Thought maybe a fluke, reset and ignored. This has been on and off last few months.
I also noticed when hooking the durametric, or other code readers, it seemed to create a draw on the system, and the engine would idle rough, or the e throttle would not respond if I tried to drive with it plugged in. Pulled the durametric and all was fine, same with a bluetooth ODBII module I have. I replaced relay 433 under the driver's seat, and this seemed to cure that problem, since it provides relayed power to the CANBUS.
About 3 months later got a PSM failure, at 45MPH and car went into limp mode. Restarted car, error was gone. Seemed fine for another month, got the same PSM failure yesterday, car seemed to be lurching a bit in slow moving traffic when it came up.
Could the bad temp sensor be triggering this? It has slowly gotten worse I assume as once in awhile I see my gauge stops working. Or did I miss something else with my wire repairs.
I am at the point ready to rip out passenger wiring under the carpet and inspect, but I suppose I should just replaced the impossible to reach temp sensor first, as it really does seem bad at this point. I also notice all the fuse block fuses for the PSM are on the right hand side, makes me wonder if the wiring issue is there.
Just seems weird I have all these problems at once.
I checked my '09 Cabs's drains at the end of summer and they appeared to drain fine down behind the wheels with good flow. However, now the rain is here, I'm getting water in the driver's side rear footwell (below the carpet) causing the alarm/electrics to go off. I've moped up the water and I checked the drains again between the rains but they still seem to drain well. I've checked the slot style drains from around the end of the top as well as the main drain towards the center of the car in a drainage dip.
Does anyone have any idea on where the water may be coming in from or perhaps other drains I've missed?
By ECU Doctors
As some of you may already know, we talked about designing a waterproof case for the Alarm Immobilizer Unit in Boxsters and 996s.
These units get water damaged easily if the convertible top is left open during rain, or just by the accumulation of water by the car's water drains, because Porsche installed them right on the floor of the car.
The costs entailed to repair this problem can reach $1,000's easily, that's why it would be more cost effectuve to protect the CLU to begin with.
Therefore, after many months of revisions and working with vendors to complete this enclosure, we began shipping waterproof cases last week to the members that where on our waiting list.
Below are a few screenshots of the installation video final Immobilizer Waterproof case.
If you are curious about how it is mounted here is the installation video: and PDF instructions: http://goo.gl/A9NQou
We're excited about this project and what it could mean to the Porsche community.
Please share if you know someone that could benefit from this.