TPS readings
09-20-18, 08:12 PM
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TPS readings
A little further down I have a folks regarding and idle issue on my recently engine replace FD RX-7. I have been retesting sensors and checking vacuum lines for 2 weeks now. I was a readjusting the throttle position sensor today and I believe the readings are a bit weird so I'd like to validate with you guys here.
The upper wire, the narrow range, Falls within spec (.75-1.25) with the throttle plate closed. I have it currently set to read about .95 volts with the throttle closed. When I hit wide open throttle, it reads right at 5 volts, So based on this the throttle position sensor is not bad according to the FMS..... But i cannot find information on what os what's supposed to happen with the voltage in between. I assume that it's supposed to go completely linear from .95 to 5 volts and hit 5 volt just you hit WOT. What happens instead is it hits 5 volts at approximately one-third throttle application. I believe this overzealous voltage application is causing all of my issues that mirror a narrow range failure symptoms.
The wide range does exactly the linear voltage I expected and hits Max voltage at wide open throttle. Should the narrow range do this exact same thing?
I would really like to clarify this before I go out and spend a couple hundred dollars on a sensor I may or may not need. Thanks!
The upper wire, the narrow range, Falls within spec (.75-1.25) with the throttle plate closed. I have it currently set to read about .95 volts with the throttle closed. When I hit wide open throttle, it reads right at 5 volts, So based on this the throttle position sensor is not bad according to the FMS..... But i cannot find information on what os what's supposed to happen with the voltage in between. I assume that it's supposed to go completely linear from .95 to 5 volts and hit 5 volt just you hit WOT. What happens instead is it hits 5 volts at approximately one-third throttle application. I believe this overzealous voltage application is causing all of my issues that mirror a narrow range failure symptoms.
The wide range does exactly the linear voltage I expected and hits Max voltage at wide open throttle. Should the narrow range do this exact same thing?
I would really like to clarify this before I go out and spend a couple hundred dollars on a sensor I may or may not need. Thanks!
Last edited by gracer7-rx7; 09-30-18 at 12:46 PM.
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