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Old 02-17-2016, 07:51 PM
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Not exactly.
If the sender and the gauge are both the same range and both the common 240-33 ohms, then they should work fine together. I went through 3 gauges on my old engine with the original sender and they all worked fine. Nothing wrong with getting all new though if you are not sure what you have. Remember 33 ohms is full scale, so if you have a 100 PSI sender and an 80 PSI gauge your readings will be off.

Quote:
Originally Posted by JOHN COOKSON View Post
John
You answered your own question. The sender and gauge must be matched (ie from the same manufacturer)for accurate readings.
That having been said some sending units and gauges are interchangeable because they have the same parameters. If you know the manufacturer of the sending unit and gauge you might be able to cross reference.

TRUE GRIT
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