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240 no start - LH2.2 ECU FI-weak? 200 1986

posted by sideswipe on Tue Sep 27 21:59 CST 2011
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last visit: Fri Oct 11 00:21 CST 2013

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Hello,

I've checked everything, fuel pressure, spark, noid light flashes, exhaust free, disconnected AMM, wiring harness and grounds - perfect. Last shot is a used ECU to see if that helps a potential 'weak' transistor not letting the FI open (low current). The voltage drop from the battery + to FI + pin is 0.25V and from FI (-) to ground about 9.5V (reasonable given the low duty cycle).

Has anyone seen a faulty LH2.2 544 ECU? They are apparently very robust.

The car starts about 1 out of ten times.

(I thought I was on to something when I found that the red-black wire from the ECU to ignition measured 4-ohms, but the OD relay (automatic) shorts this to ground via the OD dashboard lamp. Not the problem.)

Any thought s before I buy another ECU (the old, flashes a noid light)would be appreciated. Thanks.

TM

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240 no start - LH2.2 ECU FI-weak? [200][1986]
posted by sideswipe on Tue Sep 27 21:59 CST 2011 >

240 no start - LH2.2 ECU FI-weak? [200][1986]
posted by machine man subscriber on Tue Sep 27 23:56 CST 2011 > V
- 240 no start - LH2.2 ECU FI-weak? [200][1986]
  posted by sideswipe on Wed Sep 28 22:56 CST 2011 > V

240 no start - LH2.2 ECU FI-weak? [200][1986]
posted by pageda on Wed Sep 28 03:22 CST 2011 > V

240 no start - LH2.2 ECU FI-weak? [200][1986]
posted by rhaire on Wed Sep 28 07:12 CST 2011 > V
- 240 no start - LH2.2 ECU FI-weak? [200][1986]
  posted by sideswipe on Wed Sep 28 22:48 CST 2011 > V

240 no start - LH2.2 ECU FI-weak? [200][1986]
posted by porkface on Wed Sep 28 09:27 CST 2011 > V
- 240 no start - LH2.2 ECU FI-weak? [200][1986]
  posted by sideswipe on Wed Sep 28 22:45 CST 2011 > V
  - 240 no start - LH2.2 ECU FI-weak? [200][1986]
    posted by Art Benstein subscriber on Thu Sep 29 03:41 CST 2011 > V
    - 240 no start - LH2.2 ECU FI-weak? [200][1986]
      posted by sideswipe on Mon Oct 3 00:27 CST 2011 > V
      - 240 no start - LH2.2 ECU FI-weak? [200][1986]
        posted by Art Benstein subscriber on Wed Oct 12 07:44 CST 2011 > V
        
        240 no start - LH2.2 ECU FI-weak? - That's NASTY! [200][1986]
        posted by RicoS on Wed Oct 12 07:55 CST 2011 > V
        
        240 no start - LH2.2 ECU FI-weak? [200][1986]
        posted by sideswipe on Thu Oct 13 00:22 CST 2011 > V
        
        240 no start - LH2.2 ECU FI-weak? [200][1986]
        posted by Art Benstein subscriber on Sat Oct 15 15:01 CST 2011 > V
        
        240 no start - LH2.2 ECU FI-weak? [200][1986]
        posted by sideswipe on Wed Oct 19 00:40 CST 2011 > V
        
        240 no start - LH2.2 ECU FI-weak? [200][1986]
        posted by porkface on Wed Oct 19 06:28 CST 2011 > V
        
        240 no start - LH2.2 ECU FI-weak? [200][1986]
        posted by sideswipe on Sun Oct 23 22:48 CST 2011 > V
        
        240 no start - LH2.2 ECU FI-weak? [200][1986]
        posted by Art Benstein subscriber on Wed Oct 19 06:31 CST 2011 > V
        
        240 no start - LH2.2 ECU FI-weak? [200][1986]
        posted by sideswipe on Sun Oct 23 23:00 CST 2011 > V

240 no start - LH2.2 ECU FI-weak? [200][1986]
posted by pageda on Wed Sep 28 14:17 CST 2011 > V
- 240 no start - LH2.2 ECU FI-weak? [200][1986]
  posted by sideswipe on Wed Sep 28 22:42 CST 2011 > V

240 no start - LH2.2 ECU FI-weak? [200][1986]
posted by lucid subscriber on Thu Sep 29 12:19 CST 2011 > V
- 240 no start - LH2.2 ECU FI-weak? [200][1986]
  posted by sideswipe on Sun Oct 2 18:31 CST 2011 > V
  - 240 no start - LH2.2 ECU FI-weak? [200][1986]
    posted by lucid subscriber on Mon Oct 3 05:48 CST 2011 > V
    - 240 no start - LH2.2 ECU FI-weak? [200][1986]
      posted by sideswipe on Fri Oct 7 00:33 CST 2011 > V
      - 240 no start - LH2.2 ECU FI-weak? EDITed at 10:20 EST, 7-10-11 [200][1986]
        posted by lucid subscriber on Fri Oct 7 06:40 CST 2011 > V
        
        240 no start - LH2.2 ECU FI-weak? EDITed at 10:20 EST, 7-10-11 [200][1986]
        posted by sideswipe on Fri Oct 7 18:57 CST 2011 > V
        
        240 no start - Do Pumps run or not? [200][1986]
        posted by lucid subscriber on Sat Oct 8 07:48 CST 2011 > V
        
        240 no start - Do Pumps run or not? [200][1986]
        posted by sideswipe on Sat Oct 8 20:51 CST 2011 > V
        
        240 no start - Do Pumps run or not? [200][1986]
        posted by lucid subscriber on Sun Oct 9 10:03 CST 2011 > V
        
        240 no start - Do Pumps run or not? [200][1986]
        posted by sideswipe on Sun Oct 9 17:23 CST 2011 > V
        
        240 no start - Do Pumps run or not? [200][1986]
        posted by lucid subscriber on Mon Oct 10 08:03 CST 2011 > V
        
        240 no start - Do Pumps run or not? [200][1986]
        posted by sideswipe on Tue Oct 11 23:53 CST 2011 > V
        
        Volvo-Chrysler ICU terminal sleeves (available?) [200][1986]
        posted by lucid subscriber on Wed Oct 12 07:16 CST 2011 > V
        
        Volvo-Chrysler ICU terminal sleeves (available?) [200][1986]
        posted by sideswipe on Thu Oct 13 00:03 CST 2011 > V
        
        240 no start - Do Pumps run or not? [200][1986]
        posted by porkface on Mon Oct 10 20:09 CST 2011 > V
        
        240 no start - Do Pumps run or not? [200][1986]
        posted by sideswipe on Tue Oct 11 23:21 CST 2011 > V

240 no start - LH2.2 ECU FI-weak? [200][1986]
posted by HillBilly on Mon Oct 10 09:25 CST 2011 > V

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240 no start - LH2.2 ECU FI-weak? 200 1986