Oil ? Gauge

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Sep 15, 2004 | 11:50 AM

dehamma

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Oil ? Gauge

I have an '89 F150 4X4 Lariat 4.9L M5OD and I have 4 gauges on the left of my cluster; (clockwise) altimeter, oil, coolant temp, and fuel. My question is what does the oil gauge measure? Does it measure pressure?

If it measures pressure, my reading is low. How do I diagnose this, if it is a problem? Oil pump failing?

Thanks

Sep 15, 2004 | 12:49 PM

andym

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From: Bonita Springs FL

It measures whether or not your oil pressure is over 7 psi. Do a search on oil pressure gauge in this forum, it's been talked about before.

Sep 15, 2004 | 03:14 PM

EPNCSU2006

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From: Concord, NC

Ford didn't start the dummy guage thing until '90 I believe. At any rate, it's not very accurate, so it may as well be a switch anyway.

Sep 15, 2004 | 03:21 PM

andym

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From: Bonita Springs FL

My 89's got a dummy gauge.

Sep 15, 2004 | 03:22 PM

EPNCSU2006

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From: Concord, NC

hmm, maybe it was '89 and I didn't remember correctly. Anyhow, my '87 isn't any more useful than a switch would be, so it doesn't matter too much.

Sep 15, 2004 | 07:28 PM

Steven@nd

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From: North Dakota

My 88 is the idiot light with a needle too. If you ground it out completely it goes to the low side...

Sep 16, 2004 | 12:05 AM

Diggie

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From: Prince George, BC

If you have the dummy with a needle, is there an accurate aftermarket electric that will just bolt in to the block and use the factory gauge?

Buddy with a '47 Chebbie was switching his from mechanical, he says just as accurate, less mess.

What do you think?