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Old 05-01-2012, 07:25 AM   #76
TooTallRacing
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I can't offer you any advice on how to fix the problem(s) with your van but I like they way you roll. Keep at it, you will get it.

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Old 05-02-2012, 04:53 PM   #77
a1fa OP
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Good news friend. I have found the problem. The ECU has gotten soaked wet and corroded a bit. Multiple paths on the circuit board looked to be damaged by oxidation.

No capacitors appear to be blown.

We may be back in business.
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Old 05-02-2012, 08:30 PM   #78
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Old 05-02-2012, 08:33 PM   #79
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IT will never work.........
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Old 05-02-2012, 09:45 PM   #80
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Don't get discouraged - I for one think that EFI is still the way to go. My 1.9 wasserleaker always ran like a watch, despite the lack of oil pressure or coolant. And if you do away with the stock system, the feedback loop and self-tune on a megasquirt will do in short order what would take countless iterations with carbs. Technology can be scary, but only because it's different.

How did the ECU get that wet?
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Old 05-03-2012, 05:18 AM   #81
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We pressure washed the engine bay, but were careful to wash around the ECU. the water may have drained into it.
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Old 05-03-2012, 05:20 AM   #82
HillbillyNinja
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Don't get discouraged - I for one think that EFI is still the way to go. My 1.9 wasserleaker always ran like a watch, despite the lack of oil pressure or coolant. And if you do away with the stock system, the feedback loop and self-tune on a megasquirt will do in short order what would take countless iterations with carbs. Technology can be scary, but only because it's different.

How did the ECU get that wet?
+1. I tried carbs on my 78 Champagne Bus and that experiment only lasted a month before I was scrambling to find my injectors, ECU and brittle wire harness.

Yeah, that ECU should not get wet like that. I'd scrub it with alcohol and a 1/2" paint brush that you cut the bristles down to about 1/2" or shorter. Then weather seal the board with any of the many electronics waterproofing sprays.

OH, and welcome to the wild goose chase that is troubleshooting electronics on an antique Volkswagen. My bus has almost turned my hair grey with some of the shenannigans PO's have done.
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Old 05-03-2012, 08:39 AM   #83
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Old 05-03-2012, 09:30 AM   #84
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$170 for a 30yr old ECU....
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Old 05-03-2012, 11:03 AM   #85
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$170 for a 30yr old ECU....

Is that for NOS? I'd jump all over that in a minute if it was.
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Old 05-03-2012, 11:16 AM   #86
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Is that for NOS? I'd jump all over that in a minute if it was.
Used, no guarantees.
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Old 05-03-2012, 06:53 PM   #87
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I found an ECU locally, and a wiring harness... and this is giving me all kinds of ideas... build my own harness with wiring for both microsquirt and L-Jet!
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Old 05-03-2012, 07:16 PM   #88
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Old 05-03-2012, 07:47 PM   #89
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Stanimal, I am getting the van to run again...

Since I have a spare ECU and connectors, I am going to build a parallel harness that will retain all my stock wiring + wiring for the new ECU. I'll be able to run both and test and not have to be stranded and have to change cables..

One harness, two ECUs. Flip a switch, and you are on microsquirt!
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Old 05-03-2012, 08:15 PM   #90
STANIMAL
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Stanimal, I am getting the van to run again...

Since I have a spare ECU and connectors, I am going to build a parallel harness that will retain all my stock wiring + wiring for the new ECU. I'll be able to run both and test and not have to be stranded and have to change cables..

One harness, two ECUs. Flip a switch, and you are on microsquirt!
Just like my old Fiat Dino , flip a switch and another ignition system comes alive . I wish you the best of luck . I am sure with your perseverance , it will get accomplished . As always , keep us posted .
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