Question about 2002 Oldsmobile Alero

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'02 Olds Alero oil pressure light

After starting the car, the oil pressure light on my Alero comes on soon after I accelerate or drive for only a few minutes. Then, it chimes, but immediately turns off, and doesn't seem to come back on after that. What's going on?

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SOURCE: oil level system

It may seem obvious but do not operate the engine with it overheating as this can lead to more trouble including a cracked engine block.

Low engine oil pressure is a problem because if it exists, the critical engine parts may not get lubricated properly and may fail. Since you have ruled out external leaks, here are some possibilities:

Clogged oil filter or obstruction in the system

Loose wire or faulty oil pressure or oil level sending switch/sensor.

Possible blown head gasket. This is a serious problem that might be accompanied by white or blue exhaust smoke and a burnt coolant or oil odor. Check for oil contamination with coolant. The dipstick may show a brown milky film/sludge or smell like burnt coolant indicating contamination.

Engine oil pump is possibly bad. This is a serious problem. It's usually time to swap out or rebuild the engine, particularly if it has many miles.

Possible but unlikely in this case is a problem with PCU (Power Control Unit) that runs the Information Center. PCU problems are often indicated by getting other unrelated errors on the info display or "DATE NOT AVAILABLE" for extended periods when you start the car.

You did not mention the Check Engine/Service Engine Soon light being on, but if so I would get the trouble codes read at the OBD II connector. The codes might indicate a sensor problem. Some auto stores do this for free. Either way, I would assume the worse case scenario (bad oil pump) and address it immediately. Unfortunately, due to the complex nature of the car, most things are not easy to diagnose and repair by the do-it-yourselfer. Hopefully though it is just a sensor but with a temperature rise, I would be careful.

Best of Luck!

SC442299

1996 Oldsmobile Aurora
4.0L DOHC 32V V8
Autobahn Option

Posted on Aug 19, 2008

  • 1 Answer

SOURCE: 99 OLDS ALERO 2.4 IDLING PROBLEM

intake manifold has a vacum leak or other vacum leak hose etc.

Posted on Dec 03, 2008

polarcycle
  • 1392 Answers

SOURCE: cant find the low pressure port to charge a/c on 2000 olds alero

It should be near the compressor on the low side line. It is a huge pain to get to. Feel along the line, and you should come to the fitting.

Posted on Mar 06, 2009

Monster80
  • 452 Answers

SOURCE: 2001 olds alero cange oil light and ceck engine light

Look at the bottom of the oil pan and see if a electrical plug came unplugged.Or under neath the hood some where on the motor a plug came undone..

Posted on Apr 01, 2009

  • 144 Answers

SOURCE: how to check trans oil on the '02 olds alero

Hi! The transmission on this model does not have a dipstick. Instead it uses a transmission fluid oil check plug. It is accessed under vehicle. To check fluid level you must remove oil check plug. if fluid is coming out transmission is full. If it requires some fluid you can get a gear oil bottle and a short piece of hose to put on end of nipple and squeeze dextron 3 transmission fluid in until it runs out of plug hole. Then re-install plug and snug it up. **Note: Car must be on level surface with engine off when checking. Use suitable jack stands in front and rear to make vehicle as level as possible.Always wear safety goggles when working under vehicle. I have included a picture of fill plug location for you. I hope you find this information useful!caf5dc7.gif

Posted on Sep 12, 2009

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