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Oil Pressure -- Can U Change It?

brnr17

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brnr17 Enthusiast

brnr17

Posted
Posted

so when i start my truck and drive it at first it feels really torquey?! lol ... but after i drive it for a while and it gets up to operating temp for a while it seems like it looses a little ... and my oil pressure drops just a little ... is there something i can do to keep that strong start up feeling it has?

Draenor Senior Enthusiast

Draenor

Posted
Posted

Has nothing to do with oil pressure. It is the engine temp. The truck is running richer(More fuel, more power)or in a closed loop mode to bring the engine up to operating temp. What you are probably wanting is a lower thermostat(and a tune).

 

as for the oil pressure dropping, its because the oil is a bit thinner at operating temp.

bryanhunt Enthusiast

bryanhunt

Posted
Posted
Has nothing to do with oil pressure. It is the engine temp. The truck is running richer(More fuel, more power)or in a closed loop mode to bring the engine up to operating temp. What you are probably wanting is a lower thermostat(and a tune).

 

as for the oil pressure dropping, its because the oil is a bit thinner at operating temp.

 

Actually its open loop. But you are right it runs richer until the O2 sensor warms up before it goes into close loop and leans up the mix.

 

ATF temp might be a factor as well. Perhaps your engine is sucking hot air from the engine compartment too?

Draenor Senior Enthusiast

Draenor

Posted
Posted
i have a tune ... can i get a new thermostat? if so where and what temp would i get? it's an 01 1500 5.3L

160 degree. You local parts store should carry them. If not look at some of the aftermarket performance suppliers.

bryanhunt Enthusiast

bryanhunt

Posted
Posted

I did notice the guy was in wisconsin. It might be worth checking the temp to see if he has a winter thermostat instead of a regular one. In that case reducing to a regular might be fine.

 

I had a 160 in my old truck when I lived up north and its really hard to defrost and heat your hands when its in the negatives and your truck only has 160 degree water to work with.

bbwb Enthusiast

bbwb

Posted
Posted

Changing the thermostat will throw the computer off by it changing the mixture for a cold engine mileage will suffer. I believe that the factory thermostat is 195.

bbwb

brnr17 Enthusiast

brnr17

Posted
  • Author
Posted
Changing the thermostat will throw the computer off by it changing the mixture for a cold engine mileage will suffer. I believe that the factory thermostat is 195.

bbwb

i already get 17 hwy BEST so i better not mess with mileage at all LOL

C & A s Dad Senior Enthusiast

C & A s Dad

Posted
Posted
Changing the thermostat will throw the computer off by it changing the mixture for a cold engine mileage will suffer. I believe that the factory thermostat is 195.

bbwb

 

 

I do not have a catalog avail with me right now but I beleive the OE stat is a 185.

2004GMC1500CC Enthusiast

2004GMC1500CC

Posted
Posted
Changing the thermostat will throw the computer off by it changing the mixture for a cold engine mileage will suffer. I believe that the factory thermostat is 195.

bbwb

i already get 17 hwy BEST so i better not mess with mileage at all LOL

 

 

Yeah, and you will be the same guy who comes back here complaining that he is only getting 10-12 mpg afterwards. Leave the stock thermostat in place, there area numerous reason's why it is set to 195.

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