So you changed your battery and it still wont start.
Few things to look at here... lets get started.
Side post battery, ensure the batterys ends are clean and tight. Peel back the first 1/2 inch of plastic on the cable and look for corosion. If its present....either cut 1/2 an inch off it and put on new terminal connectors, its a 3 dollar fix.
Corrosion will prevent the proper ammount of amperage draw to leave the battery and reach the starter. usually indicated by a single click, or clicking when the key is turned.
No clicking at all.. lets take a look at the ignition switch. remove it and take it to your local auto zone for testing. Its free, and takes about 10 minutes to remove and replace. The part is bad this is a 30 dollar fix. This is very common for this year model of car. This is my guess of your problem from past experience.
Last lets take your starter off. It also can be bench tested at Auto Zone for free. It will take you about 20 minutes to remove and 20 minutes to put back on.
Sorry but all of your diag tips require time to remove parts and replace, but your own labor is free vs. A shops labor rate.
I hope this helps you , good luck.
So. How do you get it to start the next time? I say you have a poor battery or charging system, The AC fan is taking just enough to keep the battery out of full charge. fix it.
check for loose connections
Your battery is not charging. It is either due to a faulty battery or a faulty alternator. Get it changed.
Check the alternator. If the alternator is not generating enough electrical energy to run the car AND recharge the battery you'll always have a low battery. If that's not it try to find something that is being left on that's draining the battery.
A low or dead battery will have this effect. There is enough juice in the battery to activate the solenoid in the starter (causing the clicking sound), but not enough to turn over the engine. A jump start or a replacement battery may be needed if the battery is no longer capable of holding enough of a charge even when being jumped.
My guess would be a weak ignition coil. Same thing happened to my delta. Wouldn't start in cold weather. Changed the ignition coil (60bucks) and it's been starting good ever since.
So. How do you get it to start the next time? I say you have a poor battery or charging system, The AC fan is taking just enough to keep the battery out of full charge. fix it.
you will have to tell a few more things about the car, Have you ever changed the fuel filter,Has it everbeen tuned? Is the battery voltage good?
Bad battery, or the answer to most intermittent problems...bad ground.
To reset the computer in a 1996 Oldsmobile Delta 88, disconnect the negative terminal of the battery and leave it disconnected for about 15 minutes. This will allow the vehicle's computer to clear any stored codes and reset itself. After the time has passed, reconnect the negative terminal and start the engine. You may need to drive the vehicle for a short distance to allow the computer to recalibrate.
ECM is a common problem with this type of car engine
First thing for any automobile - check the battery - may be dead.
To jump-start a 2000 Oldsmobile Silhouette, first, ensure both vehicles are turned off. Connect the red (positive) jumper cable to the positive terminal of the dead battery, then attach the other end to the positive terminal of the working battery. Next, connect the black (negative) cable to the negative terminal of the working battery and attach the other end to a grounded metal surface on the dead vehicle, away from the battery. Start the working vehicle, let it run for a few minutes, and then attempt to start the Oldsmobile.
To replace the ECM (Engine Control Module) in a 1988 Oldsmobile Delta 88, first disconnect the negative battery terminal to prevent electrical shorts. Locate the ECM, typically found under the dashboard or in the engine compartment, and unbolt it from its mounting bracket. Carefully unplug the wiring harness and remove the old ECM, then install the new one by reversing the process: plug in the wiring harness, secure the ECM, and reconnect the battery. Finally, start the engine to ensure the new ECM is functioning correctly.
if there is power, change coil. if there isn't power, change battery
When you turn the key and the dashboard lights come on but the car won't crank check your battery. It is possible to have a loose battery cable or terminal.
Check your oil, battery, and its overall condition plus check up on how u treated it.