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Problem SOLVED! 200 1992

posted by Amarin on Fri Oct 16 10:49 CST 2020
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS]

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last visit: Thu Oct 23 22:42 CST 2014

[RELATED]

Good to hear that! You got your idle back!

The ON823 Darlington, made by Philips is unobtanium nowadays. It could only withstand 80V collector-emitter voltage (safety headroom for injector voltage back-spike). Bosch used this in my spare -934 ECU. In the -935 ECU that I'm currently using the component had been updated to BDX53C. This Darlington could withstand up to 100V (same for TIP122). Good news its still available at most online parts store. Bog standard caps with prescribed value is good enough for replacement. Using low ESR caps might get the LDO regulator into oscillation. And take care in desoldering the caps (transistors too) as the old copper traces might delaminate with undue heat.

Regards,
Amarin.

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MESSAGES IN THIS THREAD

245 correct idle after start but high after use [200][1992]
posted by Grey245 on Sat Oct 3 02:51 CST 2020 >

245 correct idle after start but high after use [200][1992]
posted by OwenF on Sat Oct 3 04:11 CST 2020 > V
- 245 correct idle after start but high after use [200][1992]
  posted by Art Benstein subscriber on Sat Oct 3 05:08 CST 2020 > V
  - 245 correct idle after start but high after use [200][1992]
    posted by Grey245 on Sat Oct 3 08:27 CST 2020 > V
    - 245 correct idle after start but high after use [200][1992]
      posted by Art Benstein subscriber on Sat Oct 3 10:02 CST 2020 > V
      - 245 correct idle after start but high after use [200][1992]
        posted by Grey245 on Sat Oct 3 11:23 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Dave Stevens on Sat Oct 3 14:00 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Grey245 on Sun Oct 4 11:22 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Art Benstein subscriber on Sat Oct 10 19:32 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Grey245 on Sun Oct 11 01:13 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Art Benstein subscriber on Sun Oct 11 05:13 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by pageda on Sun Oct 11 06:27 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Grey245 on Sun Oct 11 11:31 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Dave Stevens on Sun Oct 11 11:45 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Grey245 on Sun Oct 11 13:52 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by pageda on Sun Oct 11 14:34 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Grey245 on Thu Oct 15 11:28 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Amarin on Thu Oct 15 14:06 CST 2020 > V
        
        245 correct idle after start but high after use [200][1992]
        posted by Grey245 on Fri Oct 16 02:10 CST 2020 > V
        
        Problem SOLVED! [200][1992]
        posted by Grey245 on Fri Oct 16 08:03 CST 2020 > V
        
        Problem SOLVED! [200][1992]
        posted by Amarin on Fri Oct 16 10:49 CST 2020 > V
        
        Problem SOLVED! [200][1992]
        posted by Grey245 on Fri Oct 16 11:06 CST 2020 > V
        
        Problem SOLVED! [200][1992]
        posted by Dave Stevens on Sat Oct 17 01:03 CST 2020 > V
        
        Problem SOLVED! Or maybe not? [200][1992]
        posted by Grey245 on Sat Oct 17 07:47 CST 2020 > V
        
        ECU connector pin 34 [200][1992]
        posted by Art Benstein subscriber on Sat Oct 17 09:36 CST 2020 > V
        
        ECU connector pin 34 [200][1992]
        posted by Grey245 on Sat Oct 17 10:38 CST 2020 > V
        
        Maybe ECU connector pin 14 [200][1992]
        posted by Grey245 on Sun Oct 18 04:17 CST 2020 > V
        
        Maybe ECU connector pin 14 [200][1992]
        posted by Art Benstein subscriber on Sun Oct 18 09:23 CST 2020 > V
        
        Maybe ECU connector pin 14 [200][1992]
        posted by Grey245 on Sun Oct 18 12:56 CST 2020 > V
        
        Maybe ECU connector pin 14 [200][1992]
        posted by Dave Stevens on Sun Oct 18 19:51 CST 2020 > V
        
        Maybe ECU connector pin 14 [200][1992]
        posted by Grey245 on Sun Oct 18 22:10 CST 2020 > V
        
        Maybe ECU connector pin 14 [200][1992]
        posted by Dave Stevens on Mon Oct 19 00:03 CST 2020 > V
        
        Unlikely ECU connector pin 14 15 [200][1992]
        posted by Amarin on Mon Oct 19 09:09 CST 2020 > V
        
        Not pin 14, but maybe 30 [200][1992]
        posted by Art Benstein subscriber on Mon Oct 19 04:57 CST 2020 > V
        
        Not pin 14, but maybe 30 [200][1992]
        posted by Grey245 on Mon Oct 19 12:13 CST 2020 > V
        
        Not pin 14, but maybe 30 [200][1992]
        posted by Art Benstein subscriber on Mon Oct 19 13:27 CST 2020 > V
        
        Not pin 14, but maybe 30 [200][1992]
        posted by Grey245 on Tue Oct 20 13:15 CST 2020 > V
        
        Not pin 14, but maybe 30 [200][1992]
        posted by machine man subscriber on Tue Oct 20 21:06 CST 2020 > V
        
        Not pin 14, but maybe 30 [200][1992]
        posted by Art Benstein subscriber on Wed Oct 21 08:57 CST 2020 > V
        
        Not pin 30 either [200][1992]
        posted by Grey245 on Wed Oct 21 22:12 CST 2020 > V
        
        Not pin 30 either [200][1992]
        posted by Art Benstein subscriber on Fri Oct 30 12:21 CST 2020 > V
        
        Not pin 30 either [200][1992]
        posted by Grey245 on Sat Oct 31 01:15 CST 2020 > V
        
        Not pin 30 either [200][1992]
        posted by Dave Stevens on Sat Oct 31 14:42 CST 2020 > V
        
        Not pin 30 either [200][1992]
        posted by Grey245 on Sun Nov 1 02:30 CST 2020 > V
        
        Not pin 30 either [200][1992]
        posted by Grey245 on Mon Nov 2 02:25 CST 2020 > V
        
        Not pin 30 either [200][1992]
        posted by Amarin on Mon Nov 2 03:14 CST 2020 > V
        
        False air [200][1992]
        posted by Art Benstein subscriber on Mon Nov 2 09:22 CST 2020 > V
        
        False air [200][1992]
        posted by Grey245 on Mon Nov 2 11:55 CST 2020 > V
        
        False air [200][1992]
        posted by Amarin on Mon Nov 2 13:49 CST 2020 > V
        
        False air [200][1992]
        posted by Art Benstein subscriber on Mon Nov 2 15:22 CST 2020 > V
        
        False air [200][1992]
        posted by Grey245 on Sun Nov 8 11:23 CST 2020 > V
        
        False air [200][1992]
        posted by Nahtanha on Mon Nov 2 17:14 CST 2020 > V
        
        EZK connector pin 4 [200][1992]
        posted by Grey245 on Fri Oct 30 09:56 CST 2020 > V
        
        B200F ECU list [200][1992]
        posted by Amarin on Mon Oct 12 06:28 CST 2020 > V
        
        B200F ECU list [200][1992]
        posted by Grey245 on Mon Oct 12 11:58 CST 2020 > V
        
        B200F ECU list [200][1992]
        posted by Grey245 on Fri Oct 16 11:00 CST 2020 > V
        
        B200F ECU list [200][1992]
        posted by Amarin on Fri Oct 16 13:22 CST 2020 > V
        
        B200F ECU list [200][1992]
        posted by Grey245 on Sat Oct 17 00:50 CST 2020 > V
        
        FFF [200][1992]
        posted by Art Benstein subscriber on Sat Oct 17 05:29 CST 2020 > V

245 correct idle after start but high after use [200][1992]
posted by Grey245 on Tue Dec 8 15:28 CST 2020 > V

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Problem SOLVED! 200 1992