nlspace
Posts: 203
Joined: Mon Jun 05, 2017 10:21 pm
Delivery Date: 06 Jun 2017

Re: Who made this AC pressure sensor? What is the part number?

Sat Apr 04, 2020 6:31 am

Yeah that sounds like an electrical failure rather than a mechanical leak. The output signal was basically at the upper supply rail of +5V, like an op amp or comparator with one of the inputs missing. There may be a little circuit board with ic chips in that signal processing section.

goldbrick
Posts: 864
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Who made this AC pressure sensor? What is the part number?

Sat Apr 04, 2020 10:23 am

arnis wrote:
Sat Apr 04, 2020 5:28 am
I added a resistor between signal and ground
to to drop it down into range so I could temporarily test vehicle circuit rather than suppose it is 100% sensor. And voltage did drop
and system did work - therefore I concluded it is the sensor.
As an EE and amateur car mechanic, all I can say is Bravo! Well done and thanks for sharing the info.

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