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Aftermarket gauges by imacflier
Started on: 06-24-2015 01:47 PM
Replies: 1 (133 views)
Last post by: thesameguy on 06-25-2015 01:26 AM
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Report this Post06-24-2015 01:47 PM Click Here to See the Profile for imacflierClick Here to Email imacflierSend a Private Message to imacflierEdit/Delete MessageReply w/QuoteDirect Link to This Post
Hi, Guys,

Well, I have just plain had it with my fuel gauge. Yes, I know it is the sender, but I intend to make a radical change.....and even spend less money.

The Fiero Fuel Level Sender is a GM standard resistive 0-90 ohm sender, with empty at 0 ohms.

I intend to replace my sender with a capacitive fuel tube...they only run about $31. No moving parts! Standard mounting ring. Can be trimmed to length. Adjustable empty and full scale output. Operate on 12-18v. Sounds perfect...accuracy and reliability all in one!

BUT: they output 0 to 5 volts. Not so good for a meter expecting 0 - 12v.

So, I have a couple choices: First, I could design and build a conversion circuit, probably no more than a non-inverting op amp amplifier. There seems to be NOTHING available commercially for this purpose....including from Dakota Digital. Second, I could replace the Fiero Fuel gauge with a gauge that is designed for 0-5v input. Being lazy and risk averse, I would rather do the second....which leads to my question: Is the Fiero Fuel Level gauge replaceable or is it only replaceable as a Fuel Level/Water Temp combination? And, If it IS replaceable, is it a standard 52mm/2 inch gauge?

Please let me know, I have never pulled the instrument panel to look.


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Report this Post06-25-2015 01:26 AM Click Here to See the Profile for thesameguyClick Here to Email thesameguySend a Private Message to thesameguyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Totally unrelated, if you have the knowledge & skill to design a circuit that turn voltage into a resistance value, I would love to talk to you about that. I have an application where a pressure sensor that provides a resistance value has been NLA for decades, and the only modern replacements output voltage. If there is a reasonably simple reliable way to convert the output from, say, a MAP sensor into a 0-300ohm value (10ohm per psi) that would be totally amazing.
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