Jul 122017

2001 Oldsmobile Alero

Starts then dies

Owned vehicle from 70,000 -166,000 current mileage. I have reset Passlock several times. But this time it starts then dies. I removed battery 30+mins cleaned terminals .replaced.left ignition on AAC for 10mins turn off pull key tried starting same as before starts and dies it recently had new ignition coils plugs wires module $1200 .the shift lever button popped off couple years ago( Hockey tape works great ) all fuses look good maybe ?auto shutdown relay? At same time car stopped so did door locks/trunk release..can hear fuel pump.

My first guess would be the ignition switch. I think these had an issue with the ignition switches. But when it will not start you should determine if it isn’t getting spark, fuel or both. Also check for fuel injector pulse. I do not see a relay involved according to the wiring diagrams.

Starting System wiring diagram 2001 Oldsmobile Alero 2.4L


Anti-Theft wiring diagram 2001 Oldsmobile Alero


Starter Circuit Description (LA1)

Moving the ignition switch to the START position sends a 12 V to the PCM Ignition Crank Voltage Sense. At the same time a 12 V signal is sent through the PNP switch then through the coil side of the STARTER relay. The PCM verifies that all parameter a met for starting. The PCM then grounds the control circuit of the START relay. When the START relay is energized it allows voltage to the starter solenoid S terminal.

Apr 122017

Oldsmobile Alero

Now it’s overheating

Car was running fine until I changed the radiator hose that was leaking. Now it’s overheating and I’ve replaced, thermostat, reservoir, flushed the system, checked radiator, I’m at a loss. Someone suggested water pump but if it was the water pump why would the car not overheat with a leaking hose but once fixed it began to overheat? It has to have something to do with some type of ventilation the hole in the hose was giving the system. I have also “burped” the system several times.


Make certain all leaks are fixed. Make sure coolant level is full with 50/50 mix. Straight water or coolant will cause the engine to overheat. No thermostat or stuck thermostat will cause an engine to overheat. Something to consider is one of the caps is bad since it does not overheat with a leak. Replace radiator cap and or overflow cap.

Cooling System Refilling Procedure


When adding coolant, it is important that you use GM Goodwrench DEX-COOL™ coolant. If coolant other than DEX-COOL™ is added to the system, the engine coolant will require change sooner: at 50 000 km (30,000 miles) or 24 months.
•Close the radiator drain cock.
•If previously removed, install the engine block drain plugs.

When installing the drain plugs, use pipe sealer GM P/N 12346004.


On vehicles equipped with the 3.4L engine, open the coolant air bleed valve. The coolant air bleed valve is located on the top of the thermostat bypass pipe/heater pipe assembly. Close the valve once a continuous stream of coolant is expelled from the valve.
•Fill the surge tank to the base of the filler neck.
•Start the engine with the pressure cap off. Run the engine until the upper radiator hose starts to get hot.
•If the coolant level in the surge tank is low, add the proper mix of coolant until the level reaches the full cold line.


After servicing the cooling system, and if the vehicle is equipped with an intermittent low coolant light, an occasional low coolant light may be encountered during some extreme driving maneuvers. This complaint should be eliminated by removing the surge tank cap and adding coolant to a level just at or above the full cold line when the system is cold.
•Install the cap onto the tank with hand tight pressure.


Mar 132017

1998 Oldsmobile 88Driving down the road engine just shuts off. Sometimes it starts right back and sometimes not. All electric still functions. No check engine light comes on.
Problem is sporadic. Possible coil pack? Plugs and wires have been changed. Seems to be more electronic than a fuel system problem.


Engine shuts off

Sounds more electrical to me as well. Difficult to pin point the cause on these intermittent problems. When it won’t restart is when you can perform some tests. Since it doesn’t happen all the time it is difficult to diagnose. My GUESS would be a failing ignition control module or crank sensor/wiring harness. The ignition control module is directly underneath the coils.

Ignition Control Module Replacement

Removal Procedure

•Disconnect the 14-way connector from the ignition control module.
•Disconnect the spark plug wires from the coil assemblies.

ignition module 1998 Olds 88•Remove 6 screws (1) securing the coil assemblies to the ignition control module.
•Remove the coils (2) from the ignition control module (3).
•Take off the ignition control module.

Installation Procedure

•Attach the coils to the ignition control module. Refer to Ignition Coil(s) Replacement .

Caution! Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
•Install 6 ignition coil attaching screws

Tighten the screws to 4-5 N·m (40 lb in).
•Install the nuts and washers securing the ignition control module assembly to the mounting bracket.

Tighten the nuts to 8 N·m (70 lb in).
•Connect the spark plug wires.
•Connect the 14-way connector to module.

Feb 102017

2002 Oldsmobile IntrigueI have a 2002 Oldsmobile Intrigue that started with the heater blower not working and now it won’t start. Found a blown fuse for the high blower and replaced it. I even replaced the starter that looked old. The headlights are bright and the radio/dash seem to be strong as well. I have tested all of the other fuses with a test light and all seem fine. Seems to be electrical but can’t pin point the problem. Also, jumping the car doesn’t work either.


Jumping the car doesn’t work

Jumping a car rarely works after a battery has been run completely flat. Your vehicle had a short in the system and is why the fuse was blown and may have also run the battery flat. The most common reason for a no start is the battery. Either bad connections or the battery itself. If the battery is close to being 4 years old, replace it anyway. It takes very little amperage to operate the radio(5 amps) or the lights(7 amps) as compared to the 250 amps needed to turn the starter motor. You can check for battery voltage at the “S” terminal at the starter when someone holds the key in the “START” position to check the circuit.

Still Won’t Start

There is the possibility of an electrical issue in the starting circuit. Start with a fully charged battery. Check for battery voltage at the involved fuses. Check for output voltage at the starter relay. Look for voltage going to and from the neutral switch. Repair the wiring in between if any loss of voltage is indicated. Use the starting system wiring diagram for reference.

Starting System Wiring Diagram 2002 Oldsmobile Intrigue

Feb 092017

2002 Oldsmobile BravadaThis vehicle has automatic 4×4 BTW. When driving and turning the wheel, the vehicles slows down and rear tires slip as if grabbing for traction. Also, there is a hum or whine while turning and lasts for a few seconds while straightening and going forward. There are no lights on the dash at all. Just replaced the camshaft position sensor. Any help you could give would be great.


Whine noise when turning

A hum or whine noise sounds like a bearing going out. These vehicles are known for hub bearing failure. Drive at a around 10 to 15 mph and sway back a forth slowly. Listen for the noise to change pitch. If it does this is most likely what the problem is. A failed hub bearing.

Hum Noise

A him noise from the rear probably indicates a defective rear axle, especially if it is louder when coasting. Check the rear axle oil level.

Feb 062017

1995 Oldsmobile Cutlass CieraI replaced my starter and when I tried to start it kept trying after key was off. It is a 19995 Oldsmobile Cutlass Ciera SL.


Starter Stuck On

This is common when the terminal ends get tightened up and touch. If this is not the case you can remove the smaller wire from terminal “S” and test for constant voltage with the key “OFF”. If there is voltage found, trace back through the selector switch and finally the ignition switch. No voltage found, make certain the big wire isn’t near or touching the small wire, reattach and test again. If the issue reoccurs you may need to replace the starter as the replacement is shorted internally(not common at all). Since you made need a wiring diagram to understand the circuit I have provided one.

Starter Stuck On 1995 Olds Cutlass Ciera

1995 Oldsmobile Cutlass Ciera Starting Wiring Diagram

Dec 182016

1997 Oldsmobile 88Sometimes my 1997 Oldsmobile 88 has problems starting with or without an engine check light. It has 184k miles on it. Once I start driving, sometimes it just stops accelerating and once it hits 0 MPH. I have to turn the car off and start the car back up to start driving again. Sometimes the steering wheel locks up during the deceleration. What is the problem with my car? Is it the fuel pump?


Problems Starting

There is no simple answer for this one. If the check engine light has come on the on board computer will have stored a code. Possibly even more than one code. These diagnostic trouble codes are vital in diagnosing issues with the engine. The good news is that just about any local auto parts store will check these codes at no cost. Once you have the codes post them below for further information.

Oct 312016

1995 Oldsmobile Cutlass1995 Oldsmobile Cutlass Supreme. After driving awhile, usually after around 10 miles, if I am stopped at a red traffic light idling, the car sputters to a stop. And then when I immediately try to start the car, the dash lights come on but there is no cranking whatsoever. I wait at the stop light about 3 minutes and then try to start the car again, it strongly cranks right up and starts. Then to keep car running at traffic light stops, I put the car in park and feed it a little gas until light turns green. I HAVE A THEORY! There is a wire (or wires) going to the spark plugs and the wire has lost part of its plastic covering insulation. That wire is intermittently touching metal in the car and grounding out or shorting out so that the plugs are not getting electric current. Please help.


Your theory is a great place to start. Wrap some electrical tape around the exposed wiring and test it out. It will not hurt to try. If that helps, Replace the spark plug wires. Let me know how it tests out.


Oct 132016

1984 Oldsmobile CutlassI was attempting to fix a leaking fuel line on a friends car but when i got under it and actually saw the line itself it was very clear that the whole line needs replacing. My question is can i use a nylon or vinyl fuel line to replace the current steel one? If so is there a kit you would recommend? I am unsure about what kind of fittings it would take to tie into the tank and the pump(which is on the block) or if i would need to actually pull the tank to accomplish this. Any advice will be greatly appreciated, thank you very much.


The fuel line from the tank to the pump is a suction line and does not under go a lot of pressure. You could use rubber FUEL line and run it from the tank all the way to the fuel pump. Or you could use a mixture of metal line and rubber line. Use 2 hose clamps to attach the rubber fuel line to the metal line. It may be necessary to drop the tank to get to a usable metal line. No kit needed. Just purchase enough hose clamps and fuel line to do the job.

Rubber Fuel Line 1/4 inch. for under $20

Fuel Line Hose Clamps

Removal of Fuel Tank


  • Disconnect the negative (-) battery cable.
  • Drain tank. WARNING 
    Have a carbon dioxide fire extinguisher near the work area.
  • Use a hand-operated siphon pump, and follow the manufacturer’s instructions for its use. As the fuel tank has a restrictor in the filler neck, connect the drain hose to the main fuel pipe at the fuel pump or at the tank gauge unit. Drain the fuel.
  • Reconnect any removed hoses, lines and cap.
  • Disconnect tank unit wire from connector in rear compartment.
  • Remove the ground wire retaining screw from the underbody.
  • Disconnect the hoses from the tank unit.
  • Support the fuel tank with a suitable jack and disconnect the two fuel tank retaining straps.
  • Remove the tank from the vehicle.To install:
  • On California emissions equipped vehicles, center the fuel filler pipe in the opening as required. Always replace the O-ring when the tank unit has been removed.
  • Support the tank with a suitable jack and position the tank into the vehicle.
  • Connect the fuel hoses and electrical connectors before installing the tank straps.
  • Install the tank strap bolt and nut to 96 inch lbs. (11 Nm) and the bolt-to-body to 26 ft. lbs. (35 Nm).
  • Connect the negative battery cable, refill the tank, start the engine and check for leaks.