Last post on Sep 26, 2011 at 8:07 PM
You are in the Chevrolet Impala
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Chevrolet Impala, Auto Repair, Oil, Sedan
#2 of 50 LOW OIL PRESSURE message
Aug 06, 2006 (7:08 pm)
I have an '02 IMPALA LS 3.8L 84K miles on her.
LOW OIL PRESSURE message is comming up. checked the oil..proper viscosity and level
friend told me to put it in neutral and rev to 4K RPMs, message disappeared
he said that my OIL pump is going out.
Is it OIL sensor or OIL pump or maybe something else?
#3 of 50 Re: LOW OIL PRESSURE message [inethater]
Aug 07, 2006 (6:41 am)
Sounds like the oil pump is worn out.
Do you change your oil and oil filter every 3-6k miles?
You may want to try using a heavier oil such as 20/50 or add some "Motor Honey." The thicker oil may buy you some more time. (If the seals in the oil pump are worn out this may temporarily fix the problem and boost the oil pressure) Eventually you are going to have to replace the oil pump.
#4 of 50 Re: LOW OIL PRESSURE message [inethater]
by Mr_Shiftright HOST
Aug 07, 2006 (9:33 am)
If you have low oil pressure, you really don't want to be revving your engine at 4K in neutral. This is asking for trouble IMO.
By all means, swap out the sensor first before digging into the oil pan. Sometimes the oil pump pickup screen gets clogged up as well. So you might get lucky.
#5 of 50 Re: LOW OIL PRESSURE message [inethater]
Aug 07, 2006 (10:26 am)
HAHA, thanks for the advise guys
eh, yeah i checked my oil as stated...and i changed it too
aparently in my Engine there is no technical "oil pump" as i have pictured...It is just some gears (they are $23.77 from the dealer)
I just checked the thing with OBDII and it did not throw any messages or errors, most likely its the sensor (crossing my fingers)shop wanted like 35bucks to replace it. Hell with that, i ll do it myself. Also the sensor is located close to the oil filter.
here is the diagram for the engine, some people might find it useful..i did. The dealer is not that bad after all.
oil sensor is 9 bucks at o'relli
#6 of 50 Re: LOW OIL PRESSURE message [inethater]
Aug 10, 2006 (6:05 am)
Please let us know if the sensor does the trick.
You would think if the sensor was defective the "Low oil" message would have stayed on even during the high rev.
#7 of 50 Re: LOW OIL PRESSURE message [revjim64]
Aug 10, 2006 (6:17 am)
Maybe the sensor is loosing its sensitivity. Thus the increased pressure of high RPMs causes enough pressure to satisfy the sensor. We are hoping anyway.
#8 of 50 Where is the thermistat located for 2001 Impala?
Aug 17, 2006 (5:32 pm)
Can anyone shed some light on this subject? I am needing to replace the termistat on my 2001 Impala and it seems that NO parts shop in Atlanta has the Chilton or Haynes service manual for this model.
I do most of my own work, but this engine is by far one of the hardest to work on. Just try replacing the sparkplugs and wires and you will see what I mean.
I need to replace the thermistat as it sticks in the colder weather and causes the temperature guage to drop to zero and the fans to come on and run continuosly. By the way if anyone else has this problem, to fix it quickly do the following:
1 Stop car and turn off engine
2 Open hood and locate wiring harness directly above battery
3 Open the connection block, you will hear the fans shut down
4 Wait 5 seconds
5 Plug connection block back together
6 Restart engine, the engine will be hard to start for a moment
7 Notice the temperature guage rise back to where it should be
It seems this wiring harness directly interfaces with the BCM unit. I have had the BCM replaced twice now and still have issues, but thats another message posting.
#10 of 50 Re: Where is the thermistat located for 2001 Impala? [brkimpalainatl]
Aug 18, 2006 (8:34 am)
Re: Thermostat location.
Which engine, 3.4 or 3.8 ?