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Sedans Chevrolet Impala Chevrolet Impala General Care & Maintenance
48 messages, Last post on Jun 24, 2008 at 6:10 PM
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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? thanks |
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Replying to: inethater (Aug 06, 2006 6:08 pm) 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. |
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Replying to: inethater (Aug 06, 2006 6:08 pm) 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. |
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Replying to: inethater (Aug 06, 2006 6:08 pm) 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. http://www.newimpala.com/sigs/engine%20diagram.jpg oil sensor is 9 bucks at o'relli
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Replying to: inethater (Aug 07, 2006 9:26 am) You would think if the sensor was defective the "Low oil" message would have stayed on even during the high rev.
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Replying to: revjim64 (Aug 10, 2006 5:05 am) 
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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. Thanks, Keith 
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Replying to: brkimpalainatl (Aug 17, 2006 4:32 pm) said, "You have to remove the air filter unit. Take the flexhose off and then you have to remove the breather. Thats the only way to get at the bolts. Its a real pain but its the only way. I just did mine. Good Luck!!!" And so I wish you luck, too.
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Replying to: brkimpalainatl (Aug 17, 2006 4:32 pm) Which engine, 3.4 or 3.8 ? |
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