why is it losing oil pressure

Asked by Apr 02, 2013 at 08:54 AM about the 2000 GMC Yukon XL

Question type: Maintenance & Repair

the oil gauge doesn't say on 40 it often drop down slowing when i stop the truck

4 Answers

94,975

The engine is old and oil pressure is dependent on engine speed and bearing clearances. Has the idle speed dropped?

3 out of 3 people think this is helpful.

The oil light begin flickerin'? You know there's a set of gears that turn to pump up the pressure, when these gears turn more slowly, pressure will drop. Is this a new problem, because droppin' down when the motor isn't turning is totally normal. What we don't want to see is a loss of oil pressure, the light comes on and does not go off, but perhaps the gauge is not functioning correctly? Of course pressure will reduce with engine speed. long as it's not zero~

63,085

If you've got high mileage it could be worn bearings, or worn gears in the oil pump. HTH. -Jim

1 out of 1 people think this is helpful.
40

oil pump most probably. _____________________________________________ www.dvdvideosoft.com

Your Answer

Add photo

Related Questions

Yukon XL

Looking for a Used Yukon XL in your area?

CarGurus has 11,972 nationwide Yukon XL listings starting at $2,400.

ZIP:

Search GMC Yukon XL Questions

GMC Yukon XL Experts

#1 FordNut
FordNut
Reputation 340
#2 TK76
TK76
Reputation 290
#3 kbro
kbro
Reputation 170
View All

Related Models For Sale

Used Chevrolet Suburban
384 Great Deals out of 18,720 listings starting at $2,000
Used GMC Yukon
401 Great Deals out of 16,382 listings starting at $1,800
Used Chevrolet Tahoe
629 Great Deals out of 27,855 listings starting at $600
Used Ford Expedition
392 Great Deals out of 24,363 listings starting at $1,951
Used Cadillac Escalade
260 Great Deals out of 10,598 listings starting at $1,490
Used GMC Sierra 1500
879 Great Deals out of 64,789 listings starting at $1,500
Used GMC Sierra 2500HD
148 Great Deals out of 14,002 listings starting at $2,650
Used Lincoln Navigator
85 Great Deals out of 5,524 listings starting at $3,485
Used Chevrolet Silverado 1500
2,013 Great Deals out of 160,759 listings starting at $1,995
Used Ford F-150
2,426 Great Deals out of 211,450 listings starting at $895
Used Toyota Sequoia
127 Great Deals out of 5,565 listings starting at $2,999

Used Cars For Sale

2017 GMC Yukon XL For Sale
4,645 listings starting at $45,447
2016 GMC Yukon XL For Sale
21 Great Deals out of 1,715 listings starting at $37,237
2015 GMC Yukon XL For Sale
22 Great Deals out of 797 listings starting at $29,977
2014 GMC Yukon XL For Sale
22 Great Deals out of 377 listings starting at $19,897
2013 GMC Yukon XL For Sale
32 Great Deals out of 508 listings starting at $14,700