memegtr Posted September 6, 2006 Share Posted September 6, 2006 :sad:does anybody had his/her ecu repaired successfully? is it possible to buy replacement for damaged parts of it?.... well, if anybody had any kind of experience about this drop a line here.... thanx guys.... Quote Link to comment Share on other sites More sharing options...
Phantom Posted September 6, 2006 Share Posted September 6, 2006 Personnally I would find one in a salvage yard car and use it. How did you damage the one in your car? Quote Link to comment Share on other sites More sharing options...
AK-Z Posted September 11, 2006 Share Posted September 11, 2006 what is wrong with it? have you opened it up to see if somthing shorted? It could be leaking capacitors like in most older mitsus. If it is, there is a slight smell of something fishy on the PCB. You would clean it with baking soda (nuetralizes the acid) and denatured alcohol, with a couple of Q-tips. Then you would need to replace the capacitors with the same rating, capacitor spec are usually printed on them. Shouldn't cost more than $10 for everything. Quote Link to comment Share on other sites More sharing options...
mom'sZ Posted September 11, 2006 Share Posted September 11, 2006 what is wrong with it? have you opened it up to see if somthing shorted? It could be leaking capacitors ... you would need to replace the capacitors with the same rating, capacitor spec are usually printed on them. AK-Z I few years ago I worked with a guy in a machine shop that specialized in racing motorcycles. We were involved with the development of some vintage motorcross racers, jap dirt bikes from the late sixties and early seventies. A lot of them had electronic ignition and the black boxes were getting rare. Well... we couldn't find one for a certain bike and so out of desperation took one apart. The PCB was sealed in some epoxy we had to chip away. A big capacitor would inevitably be 'leaking' as you say. We would carefully chip away the epoxy until we could unsolder the suspect capacitor, carry it to Radio Shack, they would cross reference the number on it and we would solder in the new one. Worked like a charm. The new capacitor was usaully a tenth the size of the old one. Soon racers were sending us black boxes to 'fix' from all over. Quote Link to comment Share on other sites More sharing options...
memegtr Posted September 13, 2006 Author Share Posted September 13, 2006 well, how it ended up damaged is beyond me......I found out one chip with 10 "legs" had gone bad so......mine is a 300zx nonT automatic transmission. I'm still looking for a similar cpu or parts for it.. thanx Quote Link to comment Share on other sites More sharing options...
memegtr Posted September 13, 2006 Author Share Posted September 13, 2006 thanx for the tips AK Z, I will procede asap on it, and yes there was something like a short in it.... Quote Link to comment Share on other sites More sharing options...
Careless Posted September 15, 2006 Share Posted September 15, 2006 a friend of mine brought over two Suzuki Swift ECU's, and reportedly told me that Suzi wanted 1300 for a new one from factory. So he came to my house, i cracked it open. it turned out to be a 1/2 watt 100 ohm resistor or so that was chipped and exposed the ceramic leads inside. I promptly unsoldered it. and popped a new one in. wouldn't you know.... it worked! so basically. 1300 dollar ECU, or.... 20 cent resistor? hmmmm. he took me out for wings. im still waiting for the payback of 1280 dollar in repair fees . LOL j/k. there are multiple ways of checking circuits. If you find the schematics for each individual IC (chip = Integrated Circuit) that you can find on the board, you can most often check what the voltage/resistance/current at each pin is supposed to be, and sometimes they come with a cross examination diagram that tells you what reading you should yield if you were to test each input/output by using a digital multimeter across two pins (dont use analog, theyre gonna drive you crazy). I recently repaired a megasquirt with a dead processor. the processor was replaced, but then the computer couldnt see the device when i hooked it up. so i checked the trouble shooting guide and it told me that the RS232 (serial connection circuit chip) was supposed to show 5 volts across two pins. upon inspection, it was about 0.01 volts. $3.50 later, the board was up and running again =) i hope that sorta makes you feel a bit better about your broken ECU. often times they can be repaired instead of replaced. Quote Link to comment Share on other sites More sharing options...
memegtr Posted September 16, 2006 Author Share Posted September 16, 2006 thanx careless , mom'sZ:icon14:, AK-Z:icon14:, Phantom:icon14:, got me another cpu unit.....but this one doesn´t drive the "overdrive" feature on the automatic transmission. had a go at the capacitors and little soldering things.....2 of them looked fried. now....it would be marvelous if I find the schematics on the thing so I would know exactly the kind of chip that got smoked...... at least I´m on the road again.... still at it... Quote Link to comment Share on other sites More sharing options...
Careless Posted September 17, 2006 Share Posted September 17, 2006 thanx careless ' date=' mom'sZ:icon14:, AK-Z:icon14:, Phantom:icon14:,got me another cpu unit.....but this one doesn´t drive the "overdrive" feature on the automatic transmission. had a go at the capacitors and little soldering things.....2 of them looked fried. now....it would be marvelous if I find the schematics on the thing so I would know exactly the kind of chip that got smoked...... at least I´m on the road again.... still at it...[/quote'] so did you replace the capactors and still no go?! Quote Link to comment Share on other sites More sharing options...
memegtr Posted September 17, 2006 Author Share Posted September 17, 2006 I have replaced 2 caps so far, its the chip (IC) I haven´t found yet. thanx careless Quote Link to comment Share on other sites More sharing options...
memegtr Posted September 17, 2006 Author Share Posted September 17, 2006 jeez, I typed cpu instead of ECU, more than once, where´s my head at....anyway Quote Link to comment Share on other sites More sharing options...
COZY Z COLE Posted September 18, 2006 Share Posted September 18, 2006 jeez, I typed cpu instead of ECU, more than once, where´s my head at....anyway Same thing happens to parts when you get too near the Equator... LARRY Quote Link to comment Share on other sites More sharing options...
Careless Posted September 18, 2006 Share Posted September 18, 2006 I have replaced 2 caps so far' date=' its the chip (IC) I haven´t found yet. thanx careless[/quote'] best thing i would do is get some part numbers of the ones that are on the board that you can see, and buy only the CHEAP ones first... then change them. if it works Quote Link to comment Share on other sites More sharing options...
memegtr Posted September 19, 2006 Author Share Posted September 19, 2006 Quote Link to comment Share on other sites More sharing options...
Careless Posted September 19, 2006 Share Posted September 19, 2006 u cant link images from your computer, man. go to http://xs.to to upload an image and then click on the yellow IMAGE icon when making a post, and put a URL in there. Quote Link to comment Share on other sites More sharing options...
sweetleaf Posted September 19, 2006 Share Posted September 19, 2006 It is a Toshiba transistor array. ( DIP or ZIP) it think.. you can get them for about $2-$10.. Just search MP4001 under IC reference guides..... Quote Link to comment Share on other sites More sharing options...
Careless Posted September 19, 2006 Share Posted September 19, 2006 are you sure that is the only thing that is burnt ? Quote Link to comment Share on other sites More sharing options...
memegtr Posted September 22, 2006 Author Share Posted September 22, 2006 so far yes careless, and I hope I don´t have to replace more....I´m always checkin though.... swewetleaf...I´m at it....maybe I was looking in the wrong place... as for the image...is my face red...jeez...I will follow your sugestion..... Quote Link to comment Share on other sites More sharing options...
memegtr Posted September 22, 2006 Author Share Posted September 22, 2006 . did just that careless.....what did I do wrong?..... Quote Link to comment Share on other sites More sharing options...
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