Question about 2004 Chevrolet Express
The oil pressure guage will fluctuate with engine RPM. At idle it should be approximately 20 lbs./sq.in, at high revs about 50-60 lbs./sq.in. Hope this helps any concerns you may have. Good luck!
Posted on Jun 05, 2010
It will fluctuate with engine speed. It will read lower at idle and go up as you accelerate.
Posted on Jun 05, 2010
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Posted on Jan 02, 2017
SOURCE: Fluctuating oil pressure gauge.
Two quarts is about half the capacity. The pump was probably starved of lubrication and is failing.
If that's not expensive enough, you may now have a problem with a damaged engine. You may want to just put that money into a new vehicle.
I don't think the car would have enough power in its present condition to get high enough to reach a cliff, and driving it into a lake would not be environmentally sound. Besides, the fine would not be worth it.
The cheapest and easiest maintainance that anyone can do on a car to avoid expensive repairs is still checking the oil ever 1000 miles (filling if necessary!) and changing it every 3000.
Posted on Mar 18, 2009
Well there are quite a few things that casue a "surge" in a common rail diesel. You will need to check injector flow rates (scanner only). Fuel pressure regulator for pulsing (scanner only). Supply side fuel system for air leaks (seeing if it is sucking air into the system).
My bet would be the injectors, because you say the rpms aren't going up and down, which is usally what happens when the regulator goes bad, and when you **** air into the supply they have an extended crank. Report back with your findings.
Posted on Nov 24, 2009
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