Question about 1996 Oldsmobile Achieva
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Posted on Jan 02, 2017
SOURCE: no oil at top of engine
this sounds like a faulty oil pump down in the pan when u come to a stop so does the pump might want to get this checked out by a mechanic cause it could always be something else too hope this helped
Posted on May 14, 2009
In the oil pan on your car is a sensor that works the ckeck oil light. It is a two wire sensor that just unscrews. It has probably gone out, or hung up. It has a photo cell on it that can go out. If you replace it you might want to wait till your next oil change because you will lose all your oil. Good Luck
Posted on May 17, 2009
Are there any fault codes in the ECM? No "Check Engine" light on?
Black smoke means it is running rich. You should be getting Rich O2 sensor codes. Running rich is usually caused by the Mass Airflow Sensor. (MAF) This is located in the snorkel that connects the air filter to the throttle body. Make sure that the snorkel hose is properly connected to the sensor housing as well as the throttle body housing. (See Picture)
Also be sure to check the reference voltage (VREF) to the MAF, MAP and TP sensors. It should be right at 4.8 to 5.2 volts. If it is low, suspect a shorted sensor. Note that several sensors are served by the same VREF circuit. I had one GM 3.1L engine that was running like **** and smoking black that had only 2 volts at the MAF. I started unplugging sensors to see if the VREF would come up to specs and found that I had 5 volts at the MAF with the Coolant Level sensor (in the radiator tank) unplugged. Replacing the Coolant Level sensor fixed the car. Any of the sensors could cause the same problem if it is shorting the VREF circuit.
If the VREF circuit checks out OK, Then I would Try a MAF sensor
If you are getting misfire codes, you probably have an injector sticking open.
Posted on Oct 11, 2009
Check the throttle cable for slack. There should be about 1/2" slack when not depressed.
Also check EGR pipe and EGR for exhaust leaks.
Posted on Jan 06, 2010
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