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Old 06-08-2008, 07:55 PM   #1
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Question 1997 f-150 oil pressure gauge bouncing

I have a 1997 F-150 I just purchased the oil pressure gauge goes up and down, when it idles the hand shows low, when I press on the gas it goes up to past middle and high. When the hand shows low the oil light comes on, it looks like maybe an oil temp light? Does anybody know what I should do?
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Old 06-08-2008, 07:57 PM   #2
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Question 1997 F-150 oil pressure gauge question

I have a 1997 F-150 I just purchased the oil pressure gauge goes up and down, when it idles the hand shows low, when I press on the gas it goes up to past middle and high. When the hand shows low the oil light comes on, it looks like maybe an oil temp light? Does anybody know what I should do?
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Old 06-08-2008, 07:58 PM   #3
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The light is for low oil pressure. You may want to check the dipstick to see if there is enough oil in the truck.
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Old 06-08-2008, 08:07 PM   #4
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Default oil pressure

Quote:
Originally Posted by dewman View Post
The light is for low oil pressure. You may want to check the dipstick to see if there is enough oil in the truck.
i checked the oil its full
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Old 06-08-2008, 08:11 PM   #5
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Quote:
Originally Posted by dewaynek29 View Post
I have a 1997 F-150 I just purchased the oil pressure gauge goes up and down, when it idles the hand shows low, when I press on the gas it goes up to past middle and high. When the hand shows low the oil light comes on, it looks like maybe an oil temp light? Does anybody know what I should do?
btw i checked the oil its full
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Old 06-08-2008, 08:21 PM   #6
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Change the oil pressure sending unit. Sometimes they get clogged up and give false readings.
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Old 06-08-2008, 08:21 PM   #7
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Then there are, perhaps, other mechanical issues causing the low pressure problem. There are some good mechanics on here and I am sure one of them will be able to make some good suggestions as to where to start looking for the problem.
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Old 06-08-2008, 08:40 PM   #8
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Put a mechanical gauge on at give us the readings. The one you have is electric and subject to be wrong.
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Old 06-09-2008, 09:34 AM   #9
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Sounds like the new pressure gauge is doing just fine. Pressure will increase with egine RPM. Problem is at idle. Is idle speed normal? Am hoping its not. With oil level normal the lite is warning you of low pressure. Is there any lifter noise when lite is on? Another question, what engine and how many miles?
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Old 06-09-2008, 09:57 AM   #10
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If the oil pressure lamp is on when the engine idles and there's enough oil there are 2 ways- low viscosity oil e.g. 0W 30 SAE on summer, or you may have major engine problems. Could the engine be overheated?
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