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Old Dec 19, 2004 | 05:55 PM
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Rebel79's Avatar
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Oil gauge

Today after cold starting my 97 F-250 Light Duty w/ 5.4L the oil gauge read 0 and the oil light came on (this was after driving for a minute). I pulled into a gas station and checked my oil, it was fine. So I started it up again, and the gauge read perfect. When I pulled out of the gas station, the oil light came on again and gauge read 0. As I went down the street the gauge went back to normal (no oil light) and then bounced around for a good 5 minutes. Is this just my oil sender, or gauge, or oil pump?

Thanks
 
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Old Dec 19, 2004 | 06:29 PM
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Probably the sender, but don't take a chance, screw a mechanical on it to be sure pressure is ok.
 
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Old Dec 19, 2004 | 07:40 PM
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Symptoms of a bad sending unit "switch". Keep in mind, this is an "idiot light" type of oil pressure gauge, and either reads ZERO, or half-scale, it doesn't show fluctuations in oil pressure.
 
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Old Dec 19, 2004 | 08:11 PM
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I agree, most likely the sender. I have replaced a lot of them.
 
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Old Dec 19, 2004 | 10:30 PM
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Originally Posted by low
I agree, most likely the sender. I have replaced a lot of them.
How hard is the replacement? Where is the sender located on the block?
 
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Old Dec 20, 2004 | 12:34 AM
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Drivers side in front next to the oil filter. It's pretty easy to get to. They make a special socket that fits it. They're pretty cheap and it makes it a lot easier to remove and install.
 
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Old Feb 3, 2005 | 09:07 AM
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I have recently started getting similar symptoms as described in the original post. I am going to replace the sending unit as a first (and hopefully last) step to correct the issue.

Where do you get the special socket for the sending unit? Can someone post a pic or diagram of what the sending unit looks like so that I can start thinking through the replacement?

Lastly, do you have to do anything to "reset" the system following replacement of the sending unit. I am reminded of the step to disconnect battery for ~15 minutes following a MAF sensor clean. Just wondering if I should plan on a similar step following the sending unit replacement.

BTW, I have a 97 4x4. Does that influence the location of the sending unit as described by LxMan?
 

Last edited by cwgoff; Feb 3, 2005 at 09:12 AM.
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Old Feb 3, 2005 | 09:13 PM
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Well my motor blew up last month! It had no oil pressure! They don't think it was the oil pump, but something else internal. The bottom end was so thrashed, that I could not even get the dipstick back in!
 
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Old Feb 3, 2005 | 09:24 PM
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Originally Posted by Rebel79
Well my motor blew up last month! It had no oil pressure! They don't think it was the oil pump, but something else internal. The bottom end was so thrashed, that I could not even get the dipstick back in!
My god, that royally blows, sorry to hear about it
 
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Old Feb 4, 2005 | 09:50 AM
  #10  
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WHOA! I am having the same problem. When it's below 20 degrees in the morning, my oil gauge is 0 and light comes on. This happens for a good 5 minutes of driving. It's been doing this for about a month. I noticed my oil was really black at the last change and just think the send has dirt in it. I only have 39000 miles. Since then my tranny went out and I can't go in reverse or over 50 with O/D on. Maybe it's time for a F-250SD.
 
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