After digging my Vanagon out of the melting snow today I was able to install the new-to-me ISC and ascertain that it was in fact the culprit in my no-idle-at-cold-start problem. Hooray for that but now I'm am left very curious about what fails in these units. I did a fair bit of archive searching and read some old posts about particular capacitors within the units looking burnt or toasted and one enterprising fellow that actually replaced said capacitors. Someone, I think John Bange, started to map the circuitry but it seems to be a project that died. I have taken the defective unit apart and seems almost comical in its design and construction - so many resistors, transistors and capacitor! None of them appear damaged to my eye so I'm wondering what has failed. Has anyone here successfully repaired one of these units and has anyone figured out how to identify the failed circuit within? -- mordo 1990 Carat |
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