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- Sun Aug 27, 2017 9:50 pm
- Forum: Hardware and Installation
- Topic: Erratic RPM readings
- Replies: 1
- Views: 4359
Erratic RPM readings
Hooking up the RPM sensor input for my MR2. The tachometer line from the ECU sends out a 5V pulse signal. My logic analyzer says that it is about 210 Hz at idle. But, through the racecapture input, I get totally erratic RPM readings. I don't quite understand the 210 Hz, actually, though. At cold idl...