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1994 Si - Surviving the great flood

 
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Old 07-27-2013, 07:51 PM
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1994 Si - Surviving the great flood

Please take the time to read this! I am trying to get this car to survive!

Alright back story:

94 Si h23... 193k miles.. 100% stock.. car runs like a champ but definitely needs a timing belt and new tires.

Was awakened at 6:30 am Friday morning by my girlfriends dad letting me know that last nights monsoon flooded the street.. 15 seconds of half asleep thinking made me realize hey my prelude is in that street.. immediately get up throw on some clothes and run out there to find a couple inches of standing water inside my car... a few choice words later I run back up to the house, grab the shop vac and start to suck water out as fast as I can. After a few minutes of realizing the carpet was thoroughly soaked I start pulling interior pieces out. Car of course won't start so I get it pushed up into the driveway, get the whole interior out and start letting things dry.

Flash forward to today, I took the ECU out fearing that it took on a lot of water but I opened it up and it was moisture free. Yay. So after letting the car sit on the battery charger over night and everything drying out I put the ecu back in today and she fires right up. Sounded just fine and I drove it around the block a couple times.. I keep driving it gets warmed up and all the sudden it won't idle when I come to a stop. Have to put it in neutral and hold down throttle while I brake. Now when I start the motor it sounds a little different. I've checked the oil and there isn't any water in there even though I had dirt and grass all the way up to the oil pressure sensor. Yay for good gaskets. I think everything is dry but once the car warmed up and I had the key in I could hear something clicking from behind the steering column.. just click click click, so something is still wet. I am letting it dry out the rest of the day and most of tomorrow until tomorrow evening. I am honestly surprised the car didn't float down the street a ways.. the carpet on the passenger door panel was soaked.. that's how high it got on the low side..

Anyone know what would cause the idle problem? Do I just need to wait till it is all dried out and then try it? I know it didn't suck water down the intake either. No moisture in the spark plug area or distributor cap.

Any chance the ecu is toast? I would imagine if it starts up and all the ecu should be okay.. I should probably check all the fuses just to make sure they are good.

Part of my problem might be that I am just impatient because I had a lot go wrong this week and that kind of topped it all off.

Any input is appreciated.. here are some pictures just to do the story justice.

The dirt on the sidewalk is how far up the water was.. and this is looking downhill


This is the drivers side which was higher up in the street.. check out the water line on the center console.. the passenger seat was almost covered at one point.. I had a text book laying there that absorbed enough water to triple in size.. it was quite impressive.



Had it down to this in less than an hour and a half.. got it all dried out.. this is a very rust free car for having 194k and I plan to keep it that way as long as possible..

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Old 07-28-2013, 08:26 AM
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Re: 1994 Si - Surviving the great flood

Change your oil, coolant and tranny fluid and get another ecu.
You can probably find a used one real easy.
Leave the car open for a few days. Or pour a box of uncle bens rice all over the floor and close it up for a few days. The rice will soak up moisture like crazy.
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Old 07-28-2013, 10:40 AM
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Re: 1994 Si - Surviving the great flood

You might want to put some dielectric grease on all the connections in the wiring harness that was subject to water. They will corrode over time and cause problems.
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Old 07-28-2013, 07:35 PM
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Re: 1994 Si - Surviving the great flood

The clicking sound sounds like your fuel pump is on the fritz.
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Old 07-29-2013, 10:21 AM
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Re: 1994 Si - Surviving the great flood

^ to add on to that, dying on idle could be from not having enough fuel pressure
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Old 07-31-2013, 11:36 PM
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Re: 1994 Si - Surviving the great flood

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Originally Posted by axlline View Post
The clicking sound sounds like your fuel pump is on the fritz.
The sounds coming from under the dash though? Maybe I need to check fuses?

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Originally Posted by M0B5TA View Post
^ to add on to that, dying on idle could be from not having enough fuel pressure
When I think about it, it was running a little different when low on fuel so maybe the monsoon just hurried the process of messing things up
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