89 Iroc Gas gauge won't go below Half? - Team Camaro Tech
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post #1 of 3 (permalink) Old Oct 14th, 09, 07:05 PM Thread Starter
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89 Iroc Gas gauge won't go below Half?

While I was driving down the highway after I had filled up and ready for a 4 hour trip through Oklahoma I noticed after driving about 300 miles that my gas gauge wasn't below half. I was coming up on the gas station that I always stop for gas but my gauge showed half a tank of gas. So I filled up anyway and looked at my gauge and it read correctly at full. I haven't driven far enough since then to get down to half but it is currently sitting on 3/4. But I think I'm developing a gas gauge problem. Anyone ever experience a gas gauge not going below Half?
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post #2 of 3 (permalink) Old Oct 15th, 09, 03:06 AM
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Re: 89 Iroc Gas gauge won't go below Half?

Maybe a slap on the dash to jar it loose?

When you think you may be a t 1/4 tank, unplug the tank connector and measure the ohms to ground for the gauge, tan wire? Should be around 20-30 ohms. Approximately 45 ohms is approx half tank, 90 ohms is full.

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post #3 of 3 (permalink) Old Oct 15th, 09, 03:41 AM
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Re: 89 Iroc Gas gauge won't go below Half?

Fuel pump sending unit is wearing down in the gas tank(float assy)
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