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05-12-2005, 03:27 PM
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#1 | |
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AF Newbie
Join Date: Jun 2004
Location: Mandeville, Louisiana
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ecu capacitor corrosion?
I've been having very random engine stalling in my 92 3000gt SL. It will run for a few days problem free. After the car stalls and fails, the engine will crank and sound normal, but I have observed that there is no spark from the coil. Letting the car sit for 15 minutes or so will remedy the problem, but the car is more likely to stall again the less time it is left to rest. The failure always occurs while driving, never at stop.
I opened up the ecu and discovered the following corrosion:  It's small, but could it be the culprit? The corrosion seems quite minimal compared to the examples I've seen. Could the problem be triggered by heat? I'm good with a soldering iron and could easily replace capacitor. Thanks |
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05-13-2005, 02:15 AM
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#2 | |
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AF Newbie
Thread starter
Join Date: Jun 2004
Location: Mandeville, Louisiana
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update
Update:
I took it out for a test ride with the computer sitting on the floormat (to test if it was failing due to heat). The car ran for about 10 minutes before it failed. Needless to say the computer was very cool. Also, unplugging/resetting the computer did not remedy the fact that I could not start the engine again. Thanks. |
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05-14-2005, 11:10 AM
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#3 | |
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AF Newbie
 Join Date: Apr 2005
Location: Miami, Florida
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Re: update
I don't remenber where i red it but Capacitors don't have to get to leak to get bad , it could looks good but starting to have problems, leaking is just a sign that it's about die already .
I'd change them all three right away, even if they are not the problem, those capacitors don't have not much life left and they could damage your comp . http://www.stealth316.com/0-frames.htm Under ECM Removal and Inspection in the Mitsubishi 3000GT/Dodge Stealth on the garage section shows you the values of caps, 3si sells them too. Chris |
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05-16-2005, 07:53 PM
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#4 | |
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blue + red light magnet
 
Join Date: Jun 2003
Location: Philadelphia, Pennsylvania
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Re: ecu capacitor corrosion?
Don't know if this will help or if you already have all this figured out, but I'll post it anyway:
http://monninengineering.com/ECUrepair.html http://www.tmo.com/howto/ecu1g/caps.htm
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96 3000gt vr4 -K&N FIPK -Proboost mbc -Cusco front + rear strut bars -Greddy type-s -ATR downpipe -no cats -15Gs, 3sx aluminum pulley, FMIC, SAFC, walboro pump, EVO 560ccs, and Meth Injection Kit all waiting to go in shortly. Your 1996 Mitsubishi 3000GT VR-4 is the 92nd out of the 315 that were made that year. Only 21 of which are exactly identical. |
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05-16-2005, 09:04 PM
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#5 | |
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AF Enthusiast
 Join Date: Aug 2003
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Re: ecu capacitor corrosion?
Replacing the capacitors should be fairly easy, but it looks like you will need to repair the traces on the board as well as replace the capacitors. I dont know how to do that or I would offer more info.
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A few "bolt on" mods, a couple "cut, smash, hammer, weld, etc" mods, and a couple "why the hell do I need this/what the hell is this" weight reductions. |
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