Question about 1998 Cadillac DeVille

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I sometimes get a message saying oil pressure is low stop engine if it was the oil pump it would stay on or am i wrong this only happens sometimes when the car is idling I also have the traction control,anti lock brake and engine light on can these be reset or what should i do. the car runs great just these light's are on

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If the oil pump was bad, it would most likely stay on, but if you have a plugged oil pick up tube, then it would be intermittent. Just have to pull the pan, pull off the pickup tube, clean it out real good and put it back on and you will be good.

Posted on Jul 11, 2010

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Posted on Jan 02, 2017

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How do i change the oil pump on my 2006 Chevrolet trailblazer LT the engine is 5.3


Just because the message says low oil pressure, it does not have to mean that you actually do have low oil pressure. The sending unit could be defective, which could give you a false message. It is quite rare for an oil pump to fail. Check your oil level on your dipstick. If you are down a couple of quarts of oil, the oil pressure could be low.

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Is this high mileage vehicle? If so, I doubt changing oil pump will help, you may need engine overhaul?
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What's wrong when car says oil pressure low stop


Could be a few things......low motor oil, clogged oil filter, bad oil pump, clogged oil sump (pick up tube), idel too low....ect...Hope this helps ??

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If you rev the engine does it go away? What is probably happening is that you have damaged or worn engine bearings. These bearings are designed so that there is a gap(clearance) between the crankshft and the bearing. This gives a space for the oil to pass through. If the clearance is too big the oil will pass through too quickly and the oilpump will not be able to build up pressure, even though the volume of oil pumped is sufficient.
When the oil is cold it is thick and the sensor sees the pressure as normal. As the engine oil heats up it gets thinner and that causes the pressure to drop. Also the lower the RPM the lower the pressure. I would suggest you get the oil pressure tested at a service centre ASAP. Also have them test the sensor although sensor failure is rare. Low oil pressure will not just go away and causes more damage the more you drive increasing your repair bill considerably.
I'd say you are already in for a cranshaft regrind and oversize bearings. Perhaps (if you're lucky) only just an oil pump although this is unlikely as bearings tend to fail before an oil pump does. I'd replace both at the same time since the engine has to come out for both these repairs. The cost of having the engine out a 2nd time far outweighs the saving on spares when doing both the first time.

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Low oil preasure stop engine message displayed on a chevy trailblazer LT 2004. has anyone encounter this problem? solution?


I havent encountered it. However, I highly recommend you do not drive this car. Low oil pressure can do permanent damage to the engine. It sounds like your oil pump is bad. However, if debris managed to get inside your engine it could have damaged the piston walls causing this to happen as well.

I hate to say it, but unless you are a very skilled mec hanic this is a job for the dealership.

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A couple of things could be wrong a bad oil pressure sensor, a short in the sensor wiring,low idle oil pressure. Checking this is simple on some models.

While disconnecting the sensor from its wired connector and the light stays on is a short in the wiring, if it stays off its hopefully a bad sensor. Before just replacing the sensor I would either buy a gauge to check the pressure at the engine and thus checking the sensor also. I HATE DUMMY LIGHTS!!!

Gauges are simple, easy to install and easy to see a problem before engine damage occurs. On the bad end of the spectrum of possible problems the oil pump may be worn out, or even the engine may be worn out to the point oil pressure loss at low idle or while oil is sloshing forwards at stop signs.

Hope helped with this. remember rated this help.

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Oil pressure sometime goes too low causeing the oil light to come


Of course you realize that the pressure fluctuates according to your acceleration right? If it's going lower than it normally did than there can be a compression problem with the engine or possibly the oil pump is putting out a low output.

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Oil pressure wont stay up in my 3.1 V6


the pump filter screen is probably partly stopped up. when did you last change the filter itself?
on the pump,there is a filter screen (not the filter) that is used to keep large items from getting sucked into the pump which is located on the of the engine submerged into the oil in the oil pan.
the oinly way i know to unclog it without removing the oil pan to access the screen, would be to drop the pan low enough to get to the screen with an air line to try and blow the trash off.
it may be possible to use a reversing drill motor to run the pump backwards to try to clear the screen, but i'm not sure if that is possible on your vehicle.
someone else may have another solution.
one other thing may also cause the low pressure drop. that is the oil viscosity. what oil are you using? 30w doesn't have the same viscosity as 50w. also, 5w30 and 10w40 have varied viscosity from high to low depending on engine temperature. high viscosity is thinner for higher temps, low viscosity is thicker for lower engine temps. the oil you use may need to be of a higher viscosity if you live in a cooler climate, and lower if in a warmer climate.

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