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Angry gustav has pissed off my 964..

not really, but kinda sorta..

hey, guys..it has to be like 6 months maybe since i've posted..have had a lot of 'not so fun' going on, so been a bit absent. no telling what all i've missed..catch me up if anything major has happened. of course i can always go to ppot for that.

anyway, my '90 964 c4 cab had to sit in the rain at my dad's overnight, then drive in it for an hour coming home, then sat in that continuing rain while i worked out for a few hours at the gym when i got back to little rock. so, basically, the car got soaked for like 24 consecutive hours..something along those lines.

when i went to leave gym, i started up, but heard something blaring. turns out the alarm was going off and the fog lights turned on, front and rear (i have rears, too). anyway, i can't get it to stop, so i just disconnected the bat and although it's had days of sun to dry, it still goes off as soon as i touch the neg cable to the neg bat terminal. this must be some kind of moisture/computer/alarm system problem, no? any ideas? i could drive it, but other motorists aren't enjoying it..
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To the memory of Warren Hall (Early S Man), 1950 - 2008
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1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-07-2008, 04:45 PM
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Alarm is under the passenger seat. Did it get wet? Also, make sure the DME didn't get wet, it is under the driver's seat.
Old 09-07-2008, 05:06 PM
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hey, thanks. well, i'm not sure if it got wet or just possible that the dampness and humidity could have gotten to it. so, the alarm box is under the passenger seat? i guess the horn for the system is up front somewhere. i'll feel underneath and see if i detect moisture under both seats.
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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-07-2008, 05:11 PM
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i'll add that i've tried searches...seems other people's alarms go 'beep..beep..beep', etc. but mine is a continuous blare. also, my lights don't flash...just the fog lights illuminate, but they're steady on. does this help?
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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-07-2008, 05:22 PM
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well, i didn't find any water inside the car, but after having sat through these humid, rainy days i did find spots of mildew on the seats and on some of the plastic. keep in mind though that the car has been under a carport since i got it home a week ago, so no sitting in pouring rain, just damp weather.

i looked under the passenger seat. i found two boxes. the one nearest the driver's side had a blue relay of sorts..pulled it. the box nearest the passenger door had a black relay, pulled it...it also had a 10-amp fuse that wasn't blown. this car used to have a sophisticated 'early 90's' alarm and front/rear radar detectors, voice-activated phone, stereo..original owner was a beverly hills plastic surgeon who apparently spared no expense with both maintenance and extra toys, so maybe one of these boxes no longer does anything, as that stuff was ripped out.

anyway, pulling both of these relays..and going up fron the the fuse box and pulling the horn fuse (15 amp) and the horn relay....i still have the same symptom as soon as i re-connect the battery - continuous horn, which i assume must not be the car horn but a separate alarm horn somewhere up front, and continuous fog lights, not flashing.

maybe i need to bypass this thing for the meantime. anybody have any thoughts or ideas? working in daylight with good sunshine for a change..
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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-14-2008, 12:36 PM
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Hi Ryan,

I honestly have no idea here. I would be using low-heat air drying on the interior, pull relays, etc. Open the trunk and dry out the fuse/relay box.

If the interior seems damp, it could be that with all the electronic surgery you mentioned, you are getting intermittent connections.

Also, pull the harness off the DME and any other electronic box and reconnect. You could even use (carefully) some dielectric grease on connections.
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Old 09-14-2008, 01:07 PM
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Why not just pull the horn fuse so that you can at least drive the car and air it out?
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Old 09-14-2008, 01:35 PM
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Quote:
Originally Posted by Noah View Post
Why not just pull the horn fuse so that you can at least drive the car and air it out?
because the car horns are separate from the alarm horn. believe me..first thing i tried. honking the car horn confirms it's a different horn..sounds completely different. plus, the car is drivable..it isn't disabled. and like i said, the alarm horn isn't intermittent - it blares continuously..and the fogs don't flash - they light up continuously. i just removed the passenger seat, took a pic. i found evidence of moisture in the front and rear floorboards..both sides..under the rubber matting. great..
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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)

Last edited by bigchillcar; 09-14-2008 at 02:20 PM..
Old 09-14-2008, 02:18 PM
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just got a message from colo964 that i may be looking in the wrong place. here's a cpl pics i took of underneath the passenger seat once i removed it.




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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-14-2008, 02:30 PM
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just found a pic on loren's site that shows a pic of the alarm box..should look like this:

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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-14-2008, 02:36 PM
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okay...about to post a pic. i found the culprit right where colo964 said it was: behind the fuse box in the trunk. and when i removed it, it began leaking water out..probably a tablespoon worth. i can see a little 'rust' on the backside of circuit board. need to know how to clean it up if it can be salvaged..will post pics in a minute.
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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-14-2008, 03:06 PM
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pics..wondering now that i've dried it with a blow dryer if there's anything that can be done. i see a little corrosion in upper right hand corner of first pic (back of circuit board) and a little white corrosion around these two little cylinder shaped electrical doohickies, side by side on opposite side of board where all the goodies are. there's no corrosion on the plugins, just a little dirty, easily cleaned.



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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-14-2008, 03:18 PM
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ok...i figured out what i need to do to bypass if i have to...i made a 3" long wire, using 18-ga and fastons on either end that will plug into the plug. i've read to plug 15 and 87a, but i saw on another post i'll need to dig up where he said to use 61 and i forget the other..

anyway, cleaned the resistors and a diode with alcohol, cleaned the back of the board with alcohol and a brush as well, so after dinner gonna test it. if it works, i'll slide the circuit board back into the black box, put a silicone bead around it and put the entire assembly into a 'sandwich baggie' for a little extra and reattach to the body of the car.

and let's roll..will let ya know.
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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-14-2008, 05:05 PM
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success!!

before sliding the circuit board back into the black plastic housing of the alarm control unit, i connected the plugs (there are two..a 2-spade and an 8-spade), re-connected my battery....and no blaring alarm, lights, etc. closed the trunk and started the car right up, shut off, tested the door lock/alarm..everything working normally again. so, i slid the circuit board back in to the housing, used a little silicone to seal its interior in case of future trouble..even wrapped the whole thing in a plastic sandwich baggie for more and snapped alarm unit back into place..it pulls out towards front of car, push back towards rear to put back. i'm a happy camper again.
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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-14-2008, 07:24 PM
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So you're not going to bother to find out why your car is leaking water apparently in several places?
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Old 09-14-2008, 07:48 PM
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Quote:
Originally Posted by Noah View Post
So you're not going to bother to find out why your car is leaking water apparently in several places?
no. and further, i plan on driving with the top down from now on whenever it rains..
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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-14-2008, 07:59 PM
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Glad this worked out.
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Old 09-15-2008, 08:04 PM
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hi don, thanks. actually, i think i found the problem yesterday while working on the car, but got late and posted what i could. in the trunk, up near the firewall, there's a plastic cover that runs the width of the trunk and has a rubber gasket on the bottom to hold it in place..at top is a felt strip running its length. at any rate, i discovered that the last time i'd worked in the trunk and removed it, i put it back wrong - i had it on top of the rubber gasket, which runs around the entire trunk instead of beneath the metal edge there upon which the gasket is attached. this would compromise the integrity of the rubber to metal seal that should exist

when the trunk is closed..plastic to metal could permit water to enter, somehow get down the firewall and possibly enter the cabin via the floor and run its length..across the front floorboards, back to the rear. i had moisture in the matting underneath my floor covers. the carpet has a rubbery surface underneath it..maybe for soundproofing, i don't know, but it got not really 'soaked' but was damp to the touch. i had the top down with the car sitting in the sun today for a few hours..will give it more tomorrow. this is my best theory..it could also explain how the water got around to the alarm control unit, as it's mounted beside the firewall, behind the fuses against the inside passenger fender well. so, i could have had a leak problem across the entire width of the hood adjacent to the front window. i think i had that piece wrongly oriented for quite some time, but the problem was never exposed because i almost drive the car exclusively in good weather. but this time it had sat at my dad's house overnight in gustav's rain bands, then an hour drive back home with a stop for a few hours at the gym..and more rain. and when i left the gym, i started the car and that's when the adventure began. ultimately, there was about a tablespoon worth of water inside the alarm control unit.
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To the memory of Warren Hall (Early S Man), 1950 - 2008
www.friendsofwarren.com
1990 964 C4 Cabriolet (current)
1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold)
Old 09-15-2008, 08:27 PM
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