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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E38 (1995 - 2001)

7 Series - E38 (1995 - 2001)

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  #1  
Old 05-01-2012, 09:27 PM
Mikeman3502000 Mikeman3502000 is offline
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Location: Montreal
 
Join Date: Apr 2012
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Mein Auto: 1995 740i
Exclamation Wet engine bay, won't start anymore

Wanted to clean the engine bay of my 95 e38, must have gotten water in some electrical components. Started it up after pressure cleaning/degreasing under hood, it shut off, started, shut off. Now It turns but no start, gives me Trans failsafe mode. Checked all fuses (there was a 40A fuse blown where ECU is, dunno what for), changed crank sensor, tried swapping ECU and tranny computer from a 97 but still no luck.

Brought it in to a mechanic, he called me with my car ready a few hours later. Drove it 2 miles to home, and had it idling in driveway then just shut off again, and couldn't get it started again. Back to the mechanics now with no luck so far. He tells me there is connection problem with the computer....

Any suggestions? Car was fine until I screwed it up!!!
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  #2  
Old 05-01-2012, 10:45 PM
setconstr setconstr is offline
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Location: los angeles
 
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Mein Auto: 2001 740i sport 2006 m6
re:

I have found that you should never pressure wash or hose down your engine compartment on e38's to many electronics I wipe mine with wet rags. I had the same thing happen I left it alone for a couple of days and it started right up with no more problems
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  #3  
Old 05-02-2012, 03:25 PM
First740i First740i is offline
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Mein Auto: 740i
Park it in the sun or take a turbo heater open your hood and dry that sucker out. NEVER NEVER EVER POWERWASH UNDER YOUR HOOD ESPICALLY WHEN THE ENGIN IS OFF!!!!!!!

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  #4  
Old 05-02-2012, 03:35 PM
Mikeman3502000 Mikeman3502000 is offline
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Location: Montreal
 
Join Date: Apr 2012
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Mein Auto: 1995 740i
Yeah, trust me I regret it, almost gives me nightmares. Finally, the mechanic got it started again. After further review, there was water inside the computer box itself and still water under the cavity where the fuses/computers are. Some water in the relays under there also. He changed the relays and silicone sprayed the computers where it was still wet. Hes gonna let it run for another hour or so tommorow before giving it back to me to avoid any problems. What an experience, went through hell with this! Still love my e38 and will be glad to add some pics of it when I get it back!
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  #5  
Old 05-02-2012, 03:40 PM
First740i First740i is offline
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Mein Auto: 740i
Do you know anything about the trannys. Mine is acting up. Yes these cars suck but when the run they run very well and make it worth the trouble.

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  #6  
Old 05-02-2012, 03:40 PM
setconstr setconstr is offline
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Mein Auto: 2001 740i sport 2006 m6
re:

when I did it i actually found water in the DME which all mechanics told me was not possible but it happened .......
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  #7  
Old 05-02-2012, 03:46 PM
First740i First740i is offline
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Dude are you driving a 2000 740 I'll?? I have the exact car just not a cosmetic lok lol.

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  #8  
Old 05-02-2012, 03:46 PM
Mikeman3502000 Mikeman3502000 is offline
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Location: Montreal
 
Join Date: Apr 2012
Posts: 17
Mein Auto: 1995 740i
Same here, never again will I wet the engine bay. Love your black E38, really nice setconstr.

As for tranny, whats your problem, mine is fine other than when I decide to kickdown it, it goes into limp mode. herd its a sensor inside the Tranny. But l'll do without kickdown, and manually shift it if I want. Have it for 7 years now and almost 170 miles on it. Never changed the oil, and Bmw says its good for life.
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  #9  
Old 05-02-2012, 03:56 PM
First740i First740i is offline
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The tranny slips when I mash the gas or hit it over half way from a stop not a dead stop lil roll. But the weird part is it only dose it after 3000 rpm. Also if I am rolling and tap the gas it seems like the trans can not choose what gear it wants to be in. Car rolls and rpms go up idk.

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  #10  
Old 05-02-2012, 05:04 PM
Mikeman3502000 Mikeman3502000 is offline
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Location: Montreal
 
Join Date: Apr 2012
Posts: 17
Mein Auto: 1995 740i
Hmmm, don't know what it can be. But from sounds of it, might be the tranny. How many miles on it?
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  #11  
Old 05-02-2012, 05:24 PM
First740i First740i is offline
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Mein Auto: 740i
156000 not a lot
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