20 Most Recent 1986 Oldsmobile Regency Questions & Answers

GET THAT COOLANT SENSOR CHECKED

Worn or disrupted linkage, check side or tranny at that connection

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Look at the side of the engine block above the oil pan just in front of fire wall.

It should be under the hood in a fuse box & look on the underside of the top of the fuse box cap.

Attributes Battery BCI # : 75
Battery CA @ 32 Degrees F : 775
Battery CCA @ 0 Degrees F : 630
Battery Height : 7 1/4"
Battery Length : 9 3/4"
Battery Posts Type : Side Post
Battery Reserve Capacity : 90
Battery Voltage : 12 volt
Battery Weight : 33 lbs.
Battery Width : 7"
Wet or Dry : Wet
A lead acid battery with the fallowing specs
group 75



Attributes Battery BCI # : 75
Battery CA @ 32 Degrees F : 775
Battery CCA @ 0 Degrees F : 630
Battery Height : 7 1/4"
Battery Length : 9 3/4"
Battery Posts Type : Side Post
Battery Reserve Capacity : 90
Battery Voltage : 12 volt
Battery Weight : 33 lbs.
Battery Width : 7"
Wet or Dry : Wet
Attributes Battery BCI # : 75
Battery CA @ 32 Degrees F : 775
Battery CCA @ 0 Degrees F : 630
Battery Height : 7 1/4"
Battery Length : 9 3/4"
Battery Posts Type : Side Post
Battery Reserve Capacity : 90
Battery Voltage : 12 volt
Battery Weight : 33 lbs.
Battery Width : 7"
Wet or Dry : Wet
Battery BCI # : 75
Battery CA @ 32 Degrees F : 775
Battery CCA @ 0 Degrees F : 630
Battery Height : 7 1/4"
Battery Length : 9 3/4"
Battery Posts Type : Side Post
Battery Reserve Capacity : 90
Battery Voltage : 12 volt
Battery Weight : 33 lbs.
Battery Width : 7"
Wet or Dry : Wet

Fig. 1: Location of the oil pressure switch - others similar (click for zoom)

To removal...

1. Disconnect the negative battery cable.
2. If necessary for access, raise and safely support the vehicle.
3. If necessary, drain the engine oil into a suitable container.
4. Detach the switch electrical connector.
5. Remove the switch.

Fig. 1: Typical electric fan motor and resistor locations

Hope helps (remember to rate this answer).

there is a silicone adhesive like what is used for the windshield and rear window. This works excellent to hold on the door seals.

The fan is electric. It's powered by a relay that is connected thru a fuse directly to the battery. That relay is commanded by a coolant temperature sensor that should be located on the radiator. The only things that can go wrong here are the relay or the sensor - one of them gets stuck on the On position. To find which all you have to do is to disconnect the sensor: if the fan stops then it's the sensor, if it doesn't then it's the relay. Replace the broken part.

1986 Oldsmobile 3.8 liter V-6

if you can check to see if you are getting fuel when it wont start,maybe fuel pump is loosing pressure

check the timing marks twice and make sure crank is on top dead center.

if all that checks out ok i would check power to the coil(s) and the coils them selves... Also is the fuel pump make any noise you should here it prime.other than that make sure the gap from the sensors r proper if they are too far away the sensor will not pick up a reading.

sounds like the timing may have jumped or it could be the coil pac. I would check out this one first and then move on to the timing.

O-rings are hard and stuck. Pull the SOB out. Make sure you collect and replace all the o-rings for the injectors before you install them again or you WILL have fuel/air leaks in your cylinders.

Just find someone with the older type scanner it will tell you the code..I have them But I know that dosent help sorry