20 Most Recent 1990 Oldsmobile Regency Questions & Answers


Have you asked an auto parts store to test the charging system? Usually free.

1990 Oldsmobile... | Answered on May 06, 2016


Yes.

http://easyautodiagnostics.com/gm/3.8L/how-to-test-the-throttle-position-sensor-4

1990 Oldsmobile... | Answered on Mar 21, 2016


Not sure where the fan resistor is but it might be burnt shut causing the fan to stay on. its a little circuit board usually under hood or by heater box.

1990 Oldsmobile... | Answered on Jan 11, 2016


Same car same problem, but I found the plug w/two wires behind the glove box. It is on a brace on the left hand side, has a clip holding it there. Lift up on the clip and it slides off.
I jumpered those two wires, the door locks did not cycle as was in the instructions and remote still doesn't work.
Sounds to me like I'm missing power from somewhere, but where?
Hope you find your wires and they work for you.

1990 Oldsmobile... | Answered on Sep 25, 2015


Check for spark at plugs, fuel pressure, compression test to see what area is failing.

1990 Oldsmobile... | Answered on Apr 24, 2015


Check what code you have,need OBDI code reader.

1990 Oldsmobile... | Answered on Feb 16, 2015


It could be that your alternator has an internal short or you have a loose connection between the battery and the alternator. It could also be in the ECM if the vehicle is new enough to have that type of voltage regulator.

1990 Oldsmobile... | Answered on Oct 05, 2014


Your ckp sensor is in the engine block in the back just above the oil pan

1990 Oldsmobile... | Answered on Feb 11, 2014


drivers side frame rail about passenger position

1990 Oldsmobile... | Answered on Aug 22, 2013


Check filter is clean and belt is not loose, or u might just have it set on kp fan soeed

1990 Oldsmobile... | Answered on Jul 01, 2012


Check that power is getting to the primary side of the coil.

1990 Oldsmobile... | Answered on Dec 12, 2011


You need battery power and timing control from the engine. They spark is created is to energize the coil and then remove the voltage, creating a large spark on the secondary side. I don't really know if this is electronic ignition or the old points and distributor system, but I would look to see that power is getting to the primary side of the coil pack.

1990 Oldsmobile... | Answered on Dec 12, 2011

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