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Old 06-23-2018, 09:13 AM   #1 (permalink)
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Default 97 baleno bad ecu, new one wont start

Have a 97 baleno 1.6 where ecu is broken, or the car wont start in winter time. When using heat gun on ecu box, getting the inside hot the car start right away. We had -20 degres celsius, so let the ecu cool for 10 min, same problem. Starter engine spins, but wont fire. Heating again and everything is ok. So I ordered a new used ecu from a scrapyard. The starter is cranking, but wont start. So do I need to program the new ecu in some kind of way? or can I take a chip of the old one to solder on the new?

Or maybe there is another solutinon to the car problem and the first ecu is not broken?
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Old 06-23-2018, 10:23 AM   #2 (permalink)
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First question - does your car have an immobilizer - if it does you need the ECU, immobilizer and keys from the same vehicle, or you'll need to find a dealer who can handle the reprogramming.

Second question - is the "new used" ECU compatible with your vehicle.

The fact that heating the ECU with a heat gun allows the car to start suggests that the ECU has a fault of some sort, my suspicion would be a cracked trace or similar bad connection that shows up when things are allowed to get cold & contract - it might be an idea to check for fault codes when it's cold enough for the car not to start - it should be possible to use the paperclip method on a 97 Baleno.

If you need more information on reading the codes with a paperclip, rhinopower.org would be the place to go.
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Old 06-23-2018, 02:23 PM   #3 (permalink)
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When checking error codes with paperclip, i got code 83 with new ecu, wrong immo code or something. So took apart this de soldered the ic702 chip this is immobilizer chip, took the chip from old ecu and soldered in place. No everything works, no error codes. Thanks for the rhinopower link
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Old 06-23-2018, 03:50 PM   #4 (permalink)
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Quote:
Originally Posted by reyerd View Post
When checking error codes with paperclip, i got code 83 with new ecu, wrong immo code or something. So took apart this de soldered the ic702 chip this is immobilizer chip, took the chip from old ecu and soldered in place. No everything works, no error codes. Thanks for the rhinopower link
Glad you know what your doing, I wouldn't know one chip from another .
Well done for fixing that..
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