20 Most Recent 1986 Oldsmobile Cutlass Supreme Questions & Answers

replacing the transmission is a last resort
problem could be dirty oil or spool valve problems or low oil pressure problems
take it to a professional autom transmission shop for a proper diagnosis

1986 Oldsmobile... | Answered on Feb 28, 2018

youve got a short!!!!
with the car off and everything turned off
disconect the postive battey cable,if you get an arc then youve got a short
hook it back up and pull one fuse
then disconect the battery again
repeat this process till you dont get an arc
then you will find where your short is

1986 Oldsmobile... | Answered on Nov 19, 2016

Yes. Under the hood there is another fuse box. It's in there.

1986 Oldsmobile... | Answered on Oct 01, 2016

On 1980 and later models, both the turn signal flasher and the hazard flasher are located at the lower left hand and the upper right hand corners of the fuse block respectively. Remove these by pulling them from their connectors.
The lower dash panel may have to be removed to gain access to the unit.


1986 Oldsmobile... | Answered on Sep 30, 2016

From the Dealers service dept.

I doubt whether even the mechanics have one.

Purchase an after market Service Manual


1986 Oldsmobile... | Answered on Feb 26, 2016

Start with your fuses under the dashboard by the driver's shin bone. Remember that fuses can be burned out and not show it.
Take a test light or meter and check the contacts on each end where the fuses go, with the key on, and the lights on, to be sure there is electricity getting to the fuse.
After that, check each light bulb in the rear of the car.
Remember, the bulb can be burned out and not show.
Also check your clearance lights on the rear.
Take a test light or instrument and check all the sockets to be certain the electricity is getting to the socket when the lights are on and when the brake pedal is pressed.
God bless your efforts.

1986 Oldsmobile... | Answered on Feb 21, 2016

What do you want it to change into? If you are saying the trans doesn't shift into the next gear soon enough, could be vacuum leak, dirty filter in trans, someone put a different governor in trans. Most likely vacuum leak. Use gauge to test while driving.

1986 Oldsmobile... | Answered on Dec 17, 2014

Hi Kenny,there are some pictures showing the fuel pump location ,hope it can help you.Have a good day!

1986 Oldsmobile... | Answered on Jun 17, 2014

yes you need the correct clips and it's real hard to install the bottom rail if the top and side rails are already on since the sides go over the bottom and the top goes over the sides to keep it from leaking.

1986 Oldsmobile... | Answered on May 26, 2014

Usually From Underneath with Special O2 Sensor Socket.

1986 Oldsmobile... | Answered on Mar 16, 2014

Check fuses make sure that the steering column connector is plugged in. Stop, turn signal and Hazzard lights go through the turn signal switch

1986 Oldsmobile... | Answered on Feb 01, 2014

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