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Blown Ecu?? Help!

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Old 12-01-06, 10:41 PM
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Blown Ecu?? Help!

Alright guys heres my issue. The weirdest thing happens when i turn on my FD. It stays on for maybe a minute or two but then suddenly shuts OFF and the blinkers begin going off and on continously as if the car were possessed. I was told to check ALL my fuses, which i did and replaced them all after finding a few were blown. But problem still continues so was told my ECU may be blown. YOU GUYS HAVE ANY IDEA WHAT IT MAY BE?? Thought id ask you guys for help before i went out and bought another ECU. Thanks in advance.
Old 12-01-06, 11:11 PM
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Did this all of a sudden start happening or did you do some mods then it went crazy?
Old 12-01-06, 11:14 PM
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alarm malfunctioning??
Old 12-01-06, 11:33 PM
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will sell you a stock ECU, with 60k miles, cheap!!!
Old 12-02-06, 04:49 AM
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I dont think it is your ECU. While I am no expert, I've never seen someone here complain of a blown ECU. Its probably just a grounding issue.
Old 12-02-06, 01:24 PM
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Well see...this is wat happened. Some "genious" tried jump starting my car because the battery died out. But he connected the jumper cables wrong (positive was on negative and negative on positive)....when that happened it blew most the fuses and the car wouldnt start. I then went ahead and replaced all the fuses and the car started up just fine. Then about 10days later or so it started doing the whole "possessed" thing. I was also told it could be my harness? dunno....

BLUE94FD....what do you mean alarm malfunctioning? Because after it shuts off i do hear something like an alarm going off near my fuses.
Old 12-02-06, 01:53 PM
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Have you checked the voltage output of the alternator with the car running? It should be 13.6V or so. The genius who jump started your car may have fried the alternator diodes.
Old 12-02-06, 02:09 PM
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ttrxseven i have had the same thing i just took my car to get looked at and mine started when i did not start my car enough and battery went dead after recharging 4way flashers would not go off (i pulled the fuse) also my battery kept going dead every 2 weeks thought it was a bad battery so i replaced it and still same thing on new battery 2 weeks dead had lights on dash but not enough to crank motor

it was suggested to me it might be the 4way flasher switch on the dash board my car is in for alot of work rewire of car if he calls me and fixes the peroblem ill hit you back i know first hand what your going thou
Old 12-02-06, 03:31 PM
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MOCONNOR....Ive never checked the voltage output of the alternator with the car running. How do i go about checking that now that the car wont start at all?

yea tazz5425....please let me know as soon as you find anything out. Id really appreciate it man. My dash lights work as well and also not enough to crank motor.
Old 12-02-06, 07:49 PM
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try swapping ECUs to see if its the problem.
Old 12-02-06, 10:35 PM
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Since the car won't start at all, your best bet is to take the battery to an auto parts store and have it recharged. Most places around my house will do this for free.



It wouldn't surprise me if your alternator is broken, but you'll need to check this when the engine is running. To check the voltage, get a cheap multimeter (check RadioShack, or Sears' electrical tools department). The multimeter will have instructions for how to measure voltage.


-s-
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