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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

 
 
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Old 07-17-2010, 07:36 PM   #11
soldave
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OK, voltage tests finished and it doesn't help me a huge amount. 2.35V is detected at the sensor, and when 100mm of vacuum is applied it drops to 2.05V which is right within spec as checked by page F2-82 of the FSM. Checked pin 2H at the ECU and got exactly the same voltages, which would suggest that there is are no breaks or resistors in the line between sensor and ECU.

However, I think the FSM is throwing out some false spec values on page F2-78. It states that the voltage at the ECU from pressure sensor should be 2.8-3.2V. But that value is higher than the original signal voltage coming from the pressure sensor (spec is 1.9-2.1V). Now I'm no electrical expert, but voltage shouldn't increase along a stretch of wire). Do you get what I mean?

Doesn't help with the lack of fuel cut but thought I'd let you know the results.
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