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Ford Truck Club Forum > FORD F-250 | F-350 SERIES | SUPER DUTY > 1999-2007 Ford F250 | F350



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  #1  
Old January 3rd, 2020, 11:31 AM
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Default instrument cluster

2000 F250. what is the gauge in the upper left corner of my dash, It shows L-H with a water 'container' on it. I know I have enuf H20 in the radiator. The needle on it is continually going from lo to high. Anything to be worried about?
  #2  
Old January 3rd, 2020, 11:42 AM
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That's the oil pressure gauge. It probably needs a new sending unit.

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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Old January 3rd, 2020, 12:39 PM
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thanks glc. if I do indeed have lo oil pressure, should I get some kind of icon or indicator on the dash. I'll do some searching to see where the switch is located.
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Old January 3rd, 2020, 07:15 PM
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Which engine do you have?

Is the gauge pegging out in both directions, or just wandering within the normal range indicated? If it's a true gauge, it will be low at idle and go up when rpm's increase. It will also be lower when the engine is warmed up.

The sending unit is usually somewhere near the oil filter.

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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Old January 3rd, 2020, 08:26 PM
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got the V10 in her. The needle goes from low to mid-way. There is a little red icon that comes on when it swings left all the way. then it goes off when the needle swings 1/2 way up. I did some googling where the switch should be. I'll look for it tomorrow
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Old January 4th, 2020, 05:41 PM
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Well, it wasn't the switch. Got a new one, put it on (with a lot of grunting) started her up, and the gauge still went from way lt (L) to midrange, back to L to midrange. Crap. maybe I have to trace the wires to see if they are grounding out somewhere?????
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Old January 4th, 2020, 07:08 PM
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just a follow-up. I've changed oil/filter in other vehicles. After I did the change, I googled how to change oil/filter. On my truck, the filter was a ways away from my drain plug. The video said the filter is right above the drain plug. I don't think I drained the tranny fluid by mistake. Tranny fluid smells different from oil, right? Any the tranny has a lot more fluid than the 6 Qts I took out. Truck still shifts ok, am I safe to assume it wouldn't shift right with 5-20 in it ?I'm probably paranoid.
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Old January 4th, 2020, 09:36 PM
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Unless you poured 5W20 down the transmission dipstick tube, you don't have it in the tranny.

As with all rear drive vehicles, the transmission pan is behind the engine under the tranny, the oil pan is directly under the engine. The oil filter can be anywhere on the engine. The tranny pan doesn't have a drain plug unless one has been installed aftermarket.

You may have engine wear or a failing oil pump, actually causing low oil pressure. You need a mechanical gauge to confirm.

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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Old January 4th, 2020, 09:53 PM
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like I said GLC, gauge is working fine now. Thanks for the info about the tranny and oil pan. So, how does one drain the tranny?
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Old January 5th, 2020, 12:44 AM
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You have to unbolt the pan. That gets messy. There's also (probably, but not definitely) a drain plug for the torque converter, that's behind a dust plug under the bellhousing. Dropping the pan only gets about 1/3 of the fluid out, the pan holds about 5 quarts and the torque converter holds about 10 more quarts. That's why shops these days use a fluid exchange machine that taps into the cooler lines.

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS


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