Question about 1989 Oldsmobile Delta 88

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I need a wiring harness for my 1989 oldsmobile 88 Royale Brougham engine sensors and fuel injection system, speed sensor, crankshaft and cam sensors wiring also need weatherstripping for all 4 doors do you know where I can get this?

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Posted on Jan 02, 2017

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SOURCE: I need to find the speed sensor on a 1992 oldsmobile 88

I need to know what size motor to help.

Posted on May 17, 2009

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The problem sounds like the solenoid that locks up the torque converter. This will not set a code or turn on the check engine light. The car will restart each time after it stalls. This will happen when you are comming to a stop or turning a corner. At times, you can start the car in neutral but when you put it in drive or reverse, it will again stall.

This can also happen after you have driven the car and parked it. When you restart the car, it may stall when you try to drive it because the solenoid is still locked from when you pulled into the parking spot.

Try to free it up by driving the car about 32 mph in drive (drive with the square around the D) where the overdrive and lock up torque converter will work. At 32 - 34 mph, pull the shifter down to the next Drive (D without the box around it) and you should feel the bump of the torque converter unlocking. Then put it back into the upper drive location and you will feel it lock up agian. Repeat this about 20 times and see if this does not help. These can start becomming mechanically "Sticky" and cycling them 10 - 30 times can help.

There is also a 6 wire connector on the forward (front of the car) side of the transmission. This connector might be dirty. Clean it with electrical contact cleaner (spray type) and reconnect it to the transmission. This connector is probably not the problem but worth lookign at anyway.

There is also a small port in the valve body of the transmission that if plugged, it can cause this problem. I feel it is most likely a "Sticky" soleniod that locks up the torque converter and makes the car stall just like comming to a stop in a standard transmission car without pushing in the clutch.

Good luck,

Posted on Jul 27, 2009

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SOURCE: Need help... Im at the point to fire my car..!!

Sounds like the solenoid that locks up the torque converter. This is a mechanical device that locks up the torque converter at around 31 MPH. Pull the shifter into a lower gear (normal drive rather than overdrive) while you re driving about 33 mph. You will feel the car **** a little as it drops the lock up soleniod pin out. Shift it back and forth between overdrive and drive at this speed...33 mph or so.... as long as you can feel this happening a few times. I'd say to do it 10 - 30 times. This will not hurt anything but if it is mechanically sticking, it might help to solve the problem

There are a few other things I might suggest but this will first be a good test. If you drive the car in second gear (much slower to not over rev the engine), it should not ever stall because the torque converter should not lock up anyway.

This problem will not set an OBDII code or turn the check engine light on at all. This will make your car stall when comming to a stop or turning a corner. The car will quickly restart. This can be a very intermitent problem.

Good luck

Posted on Jul 27, 2009

SOURCE: my 1989 oldsmobile 88 royale wont start

Sounds like a good idea.


Posted on Aug 20, 2009

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SOURCE: need to know the spark plug wire configuration for

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Posted on May 26, 2010

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Hey guys looking for a 87 oldsmobile delta 88 royal brougham MAP sensor location..looked almost everywhere except the inside of the Manifold..please help!! Will post a pic so you can get a better idwa of...

Here you go copy and past then click on the first picture. It's number 5.

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1994 Oldsmobile 88 Royale 3.8 L engine motor races

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I would be curious to know what the code is.
Since this engine uses a distributor, there is no cam sensor listed other than the pick-up coil in the dist.
If the engine has a crank sensor it is mounted on the timing cover behind the crank pulley.
Usually, when you have a wandering idle speed, the idle speed control valve is faulty or the throttle body is dirty, or there is a vac leak somewhere.

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How to replace cam sensor

This unit is part of the distributor.


See Figure 1
The ECM uses the camshaft signal to determine the position of the No. 1 cylinder piston during its power stroke. The signal is used by the ECM to calculate fuel injection mode of operation.
If the cam signal is lost while the engine is running, the fuel injection system will shift to a calculated fuel injected mode based on the last fuel injection pulse, and the engine will continue to run.

0900c1528008f0d2.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: Camshaft Position (CMP) sensor location


See Figure 2

0900c1528008f0d3.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: Camshaft Position (CMP) sensor wiring schematic

  1. Disconnect the CMP sensor wiring harness and connect an LED test light between CMP harness terminal C and battery ground.
  2. With the ignition ON and the engine off, verify that the test light illuminates.
  3. If not as specified, repair or replace the fuse and/or wiring.
  4. Carefully connect the test light between CMP harness terminal A and C and verify that the test light illuminates.
  5. If not as specified, repair the CMP harness ground circuit (terminal A).
  6. Turn the ignition OFF and disconnect the test light.
  7. Next, connect suitable jumper wires between the CMP sensor and CMP sensor harness. Connect a DC volt meter to the jumper wire corresponding to CMP terminal B and battery ground.
  8. Start the engine and verify that the voltage signal is 5-7 volts.
  9. If it is not as specified, the CMP sensor may be faulty.


  1. Disconnect the negative battery cable.
  2. Detach the sensor harness connector at the sensor.
  3. Unfasten the retaining bolt, then remove the sensor from the camshaft housing. Inspect the sensor O-ring for wear, cracks or leakage and replace if necessary.

To install:
  1. Lubricate the O-ring with clean engine oil, then place on the sensor. Install the sensor into the camshaft housing.
  2. Install the CMP sensor retaining bolt, then tighten to 88 inch lbs. (10 Nm).
  3. Attach the sensor harness connector.
  4. Connect the negative battery cable.

Feb 15, 2011 | 1996 Chevrolet C1500

1 Answer

Just bought a used 1989 Delta 88 Royale Brougham. It worked fine but when I got it home and plugged it in (its winter) it won't start now. It turns over but won't stay running

is this a diesel? surely not. the plug in heats the oil in the oil pan to make the engine start easily in wintertime. you may have a faulty plugin, or if someones installed a deisel motor, you most likely have bad glow plugs,hmmm if gas, i suggest you check for faulty oildipsick heater or bad or weak fuel filter,fuel pump, it really makes a difference whether it's deisel or gas. please repost if this does'nt help, thank you for choosing

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Where is the cam shaft sensor


The crankshaft position sensor on a 1989 Oldsmobile Cutlass Ciera is located inside the engine compartment. On the Ciera's bottom of the engine block is the oil pan. The crankshaft sensor is on the side of the oil pan.

Take care.

Sep 03, 2010 | 1989 Oldsmobile Cutlass Ciera

1 Answer

A 1989 olds royal brougham (88)with new battery,

I would check the crankshaft and camshaft sensors. I don't think the connections are wrong, they really only go on 1 way.

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When car sits over night cold floods & will not start

It's fuel injected! Tell me where you come up with flooding? It won't start on a cold day,other wise okey and runs well,I doubt it?

Feb 11, 2010 | 1989 Oldsmobile Eighty Eight Royale

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