lazylady

I'm curious to what the "indicator" is? Are you talking a "wig wag", or "low air flag"? That comes down to warn of low air? That could lose air if the diaphram is bad. It's just a rubber disc inside, and tend to get old and brittle.

The pressure switch works a light on the dash, or a buzzer(that you say works). I'm thinking that by your description that it all works fine.

its up above the break paddle ita called low pressure indicator

Is the air pressure actually low while the buzzer is on, or is the air pressure normal (105 - 120 PSI)while the buzzer is on?

That would help us to narrow it down.

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i have bought 3 new indicators and my husband says thy are bad thy lose air i spent over 100.00 for 3 the buzzer and pressure switch is good can you help me find one

ok thank you very much

where is the pressure switch located at

The "indicator" sounds like only the light/buzzer? If you didn't replace the pressure switch then likely that's the culprit. If you replaced it and the buzzer still sounds, then the wiring is shorted somewhere.

ok thank you very much

Is the air pressure actually low while the buzzer is on, or is the air pressure normal (105 - 120 PSI)while the buzzer is on?

That would help us to narrow it down.

.

its always on just bought indicator and still doing it

we have 71 ford tandem truck the low pressure buzzer stay on all the time we bought air brake govner and low pressure indicator can any heipme please