Hi everyone,
I’m struggling with a low idle on an E30 with an m20. Smoke test done, no leaks, blue temp sensor and all other electronics tested. Tested ICV per the Bentley manual and the the center pin of the connector (pin 2) was 12 volts as it should be but when I measured the outside pins, pin one measured 9.62 volts, and 10 is the acceptable value; however, pin 3 measured 4 volts instead of 10 volts. I’m trying to figure out what pin 3 controls of the icv. When the icv is disconnected with the engine running there is no change in rpm and it appears there should be an increase in idle. Where do I go with this and what is pin 3? I’ve uploaded the Bentley manual instructions and a diagram of my results. I emailed Bosch tech support as well. I’m thankful for any help. - Tom
I’m struggling with a low idle on an E30 with an m20. Smoke test done, no leaks, blue temp sensor and all other electronics tested. Tested ICV per the Bentley manual and the the center pin of the connector (pin 2) was 12 volts as it should be but when I measured the outside pins, pin one measured 9.62 volts, and 10 is the acceptable value; however, pin 3 measured 4 volts instead of 10 volts. I’m trying to figure out what pin 3 controls of the icv. When the icv is disconnected with the engine running there is no change in rpm and it appears there should be an increase in idle. Where do I go with this and what is pin 3? I’ve uploaded the Bentley manual instructions and a diagram of my results. I emailed Bosch tech support as well. I’m thankful for any help. - Tom
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