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Thread: Digital $30 trans PSI sending unit, works great!

  1. #21
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    my 2nd sensor for this company also is not working correctly after only a couple weeks. Can the e85 be causing this or is the sensor just a piece of junk? does the e85 actually touch anything sensitive on the sensor?
    9.8@150 . LQ4 Turbonetics Billet 7575@18psi, 6 speed, non-intercooled with meth. Speed Density, open loop, no PE.

  2. #22
    Joe (Moderator) joecar's Avatar
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    Ask the company if this sensor is affected by fuel touching it... and ask if they have any fuel specific sensors.

  3. #23
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    Any updates on these sensors?

  4. #24
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    the company sent me a 3rd new sensor but I haven't tried it. i would just go with a different one if I were you
    9.8@150 . LQ4 Turbonetics Billet 7575@18psi, 6 speed, non-intercooled with meth. Speed Density, open loop, no PE.

  5. #25
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    I ended up buying an autometer sensor to replace the ebay sensor.

    before I installed it I was checking voltages on the 3 sensor harness wires and noticed the harness ground wire has .8 volts when I check it with the voltmeter to chassis ground. The harness ground wire is directly connected to blue connector pin 41 (EGR Pintle position ground) . Is this normal ?
    9.8@150 . LQ4 Turbonetics Billet 7575@18psi, 6 speed, non-intercooled with meth. Speed Density, open loop, no PE.

  6. #26
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    and to add more information the red 5v wire shows 5.8volts when referenced to chassis but shows 5.0 volts when referenced to computer ground.

  7. #27
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    do these sensors work better when just using air? thinking of getting a couple and logging back pressure/intercooler pressure drop.
    1989 Notch l Forged 5.3L l PT91.5 l th400
    SBE 4.8L l S475 l th400 8.62@156 (old setup)

  8. #28
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    Quote Originally Posted by badls1 View Post
    do these sensors work better when just using air? thinking of getting a couple and logging back pressure/intercooler pressure drop.
    I wouldn't waste your time, they are probably cheap china sensors. I ended up putting an autometer sensor in and its been fine since
    9.8@150 . LQ4 Turbonetics Billet 7575@18psi, 6 speed, non-intercooled with meth. Speed Density, open loop, no PE.

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