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| | Posted on Monday, January 13, 2003 - 11:53 am: | 
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Hello All,
Having a problem with a ’96 Discovery. When the engine is started cold, it takes a long period for the oil pressure light to go out. I’ve experienced the problem in temperatures varying from mid 40 degrees down to high teens. Initially I felt that I had an oil filter anti-drain back valve go bad, so I swapped out the filter. Problem seemed to go away for a few days, then re-occurred. I also considered the heavier weight oil I’m running (Redline 15w-40) but the manufacturer indicates that it is easily pump-able well below zero degrees. I’m afraid I am having a problem with the oil pump, and thought I’d see if anyone had experienced similar issues, and what they did to cure them. It can take as long as 20-30 seconds for the oil pressure light to go out, though generally it takes between 12-16 seconds. Again, this is only an issue with cold starts (truck has sat for 6-8 hours or more). Thanx in advance… |
Jim C.
| | Posted on Monday, January 13, 2003 - 01:06 pm: |
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There may be sludge build-up. Maybe a flush with a thin oil, drain, and then refil with clean stuff will fix the problem. 12-16 seconds for the oil light to go out seems really long, let alone 20-30. |
Ron
| | Posted on Monday, January 13, 2003 - 09:46 pm: |
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Blocked oil pickup, faulty sensor
Check those first
Ron |
Norm
| | Posted on Monday, January 13, 2003 - 10:27 pm: |
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This winter, I've noticed on cold starts (left overnight at about 45 degrees F and below) that it takes about 6-8 seconds for the oil warning light to go off using 10w-40 (Valvoline) and 4-6 seconds with 10w-30 (Castrol GTX). For some reason, this year I seem to be paying particular attention to this for the first time since I bought the truck in '95 (it now has a 4.6 with about 20,000 miles).
Just wondering what others have experienced and what is "normal."
Thanks,
Norm |
Bill K (Bill_K)
| | Posted on Friday, January 17, 2003 - 02:27 pm: |
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Mine stays on for about 6 sec. I use mobil 1 15w-50. I think i'll switch to 10w-30 for all year round use next time. |
Norm
| | Posted on Monday, February 03, 2003 - 04:21 am: |
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My oil light seems to be more temperature related than anything. If left overnight in freezing or near freezing weather, the light goes off after 4-6 second. Lately it's been in the 50s to 70s, and when left overnight the oil light goes out after a second or two at the most on the first start, even if the truck has been idle for several days.
I also changed from a long K&N oil filter to a short factory filter, which seemed to make it turn off the oil light a little quicker with cold starts. Don't know if it's just my imagination or if short filters are better in the winter.
Maybe these trucks need a engine block heater in cold weather. One of my neighbor's with an old Iz Trooper stuck a goosenecked lamp with a 100 watt bulb under his trunk and kept it turned on next to his oil sump every night. He said it worked.
---Norm |
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