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Newbie Forum: Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum. Probationary Members must limit their tech posts to this forum and sub-forums.

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Old 07-26-2005, 03:59 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
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How can you tell if your ECU is bad???


How can you tell if your ecu has gone bad by looking at it? Anyone have any pictures showing what happens when a ecu goes bad??


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Old 07-26-2005, 05:25 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
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You should tell us some of the symptoms your car is having... When my ECU went bad (twice) in my 95 Non-Turbo, the car would intermittently die. When it would die, I could tap the ECU and I would hear the car "click" back on. Damn engine mounted ECU's...

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Old 07-26-2005, 05:37 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
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You can open it up and see if the caps are leaking. It will also have a fish smell to it.

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Old 07-26-2005, 05:46 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
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if its turbo when you turn the ignition to on the boost gauge should jump (factory gauge) if it doesnt its fried.. or you have an eprom chip in it


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500awhp Corn-Fed 97' GSX

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Old 07-26-2005, 06:14 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
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Quote:
Originally Posted by Burnett03
if its turbo when you turn the ignition to on the boost gauge should jump (factory gauge) if it doesnt its fried.. or you have an eprom chip in it
Is that 1g only because I'm almost positive my car doesn't do that.

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Old 07-26-2005, 07:20 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
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Quote:
Originally Posted by ndilo21
I'm almost positive my car doesn't do that.
Go outside and check. Then tell us what your factory boost gauge does do when you turn the ignition on.

Steve
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Old 07-26-2005, 08:02 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
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When I turn the car on the boost gauge goes a little under 0

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Old 07-26-2005, 08:09 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
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Quote:
Originally Posted by S240161
When I turn the car on the boost gauge goes a little under 0
Sounds like yours is at least powering up. If it was totally dead the gauge wouldn't move. The other thing they do on power up is turn the CEL on for a few seconds.

Steve
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Old 07-27-2005, 10:58 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #9 (permalink)
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I took some pictures of my ecu... can anyone tell me if this is my problem... I have checked the wires and they seem to be fine....

Is that normal for all the wires to go out at once??
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Old 07-27-2005, 11:15 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #10 (permalink)
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Quote:
Originally Posted by S240161
I took some pictures of my ecu... can anyone tell me if this is my problem...
Yes, the leakage damage is one of your problems. I revise my guess from before, you may not have blown the sensor ground. Your ECU Analog to Digital Converter (ADC) circuit is damaged among other things. That will cause you to throw lots of codes.

Steve
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Old 07-27-2005, 06:43 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #11 (permalink)
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Get another ecu and your problems will go away

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Old 07-28-2005, 12:06 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #12 (permalink)
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Im trying to find one.... But I cant

I have a 92 TSI Automatic

No one has anything in a Auto

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