Question about 1988 Oldsmobile Cutlass Ciera

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I have a 1988 oldsmobile cutlass ciera 2.8L with trouble code 53 - System over-voltage (ECM over 17.7v). Used voltmeter on battery when car would not start it was 7.8v. Jumped car reading with engine running at idle 12.73v, with engine revved up 13.61v. Shut off engine after 10min and read 11.50v. Replaced alternator 2yrs ago and batter 4.5yrs ago.

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Posted on Jan 02, 2017

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SOURCE: 1988 oldsmobile cutlass ciera check engine light on then stalled.

Wow! thats verry low miles for an 88. Check the fuel pressure at the injector. If the pressure is low the filter could be clogged or the pump is not putting out enough pressure. Replace both if the pressure is not up to par. also check the fuel relays.

Posted on Jan 30, 2009

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SOURCE: Oldsmobile Draining Battery

You will need to check for battery voltage at the back of the alternator. The larger red wire.

Posted on Feb 27, 2009

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SOURCE: 1988 Olds cutlass ciera trouble codes

code 12 just means that the computer doesnt see the motor running.Code 15 means that the coolant temp sensor is stuck at below 30 degrees.You may need a coolant temp sensor or you have a wireing problem.Code 34 is related to the mass air flow sensor and really needs a scan tool to proporly diagnos.Although you can check it for loose conections and visible damage and if none you will have to have the data stream from the computer to check the mass air flow sensor.You could always roll the dice and change it out.Let me know if this helped at all.

Posted on Oct 06, 2009

Testimonial: "Thank you so much. I unplugged the MAF sensor and it acted just like it does when it cuts out going to replace it tomorrow. Thank you."

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SOURCE: 1988 olds cutlas ciera service engine light comes

being that old i'd check the EGR valve see if it is plugged up with carbon

Posted on Mar 02, 2010

Testimonial: "Thanks! No one has suggested that yet."

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SOURCE: 1993 oldsmobile cutlass ciera. Engine stalls when you stop

Checkk the EGR system for the EGR valve should open when the engine gets to operating temperature. If not the engine will stall out

Posted on Jun 19, 2010

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If the voltage is in fact over 15 volts, it can cause all sorts of problems. If that is the case, the alternator will need to be replaced.

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