Engine Mechanical problem
1995 Oldsmobile Delta 88 Two Wheel Drive Automatic 79000 miles
We purchased a very nice 1995 delta 88 olds royale in very good condition for my grandson. Three months after purchase, the car will just shutdown. Sometimes after leaving it sit, we can get it started, but never know when it is going to shutoff. We took it to a mechanic we trust and have used for years. He has done several things and thought it was fixed only to bring it home and it happens again. These are some iof the things we have had done. Cleaned battery cables, checked alternator, scan tool test, no codes, check fuel pressure all ok. Replaced fuel pump, strainer, fuel filter. Replaced starter. Put on new battery cables, replaced fuel dump relay replaced window relay, direct wired fuel pump due to thinking it was stopping due to an electrical problem with the windows. Car was sometimes stopping when power window was pushed up or down. Lots of electrical on this car. Only new electrical addition added was a radio with cd player, but stopping did not occurr until two weeks later. Brought the car home and mecanic said he did the electric work around with the fuel pump and we should have no problem with it stopping. My grandso drove it that night and it quit about 15 blocks later and now will not restart.
Now will not restart. Do below to determine if its a fuel or spark problem.
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 in away from ground have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor /distributor pick-up coil, ignition control module, ECM, Ignitor camshaft and crankshaft sensors and computer. Note: If it doesn't apply disregard it
May, 23, 2010 AT 7:50 PM
Thank you so much for responding, but I am mechanically challenged. I did not understand what needed to be done since we have already put in a new fuel pump, filter and new starter. The bypass at fuel pump should have taken care of the dying. Are you suggesting replacing spark plugs? Thank you for the response, but I need something that I can relay to the mechanic to be sure he understands that this is not something he has already done. He has kept the car for a week removing dash and doors to track down and electric problem. He called a electric mechanic and he said to do the bypass. Are you suggesting something that does'nt have anything to do with the electricl system?
August, 2, 2010 AT 3:57 PM
Hi, I had similar problems with my Delta 88 (1991) and as it turned out it was the ignition coil pack (or rather the ignition control module. This may be something your mechanic could check if you're still having the problems!
August, 14, 2010 AT 3:46 PM
I had the exact same problem with the exact same year and modle. After eliminating fuel delivery issues; and paying for diagnostics, and based on codes, replaced the starter module, the ignition module, etc, still the same problem. Then while replacing the air filter, it was noticed that when the key was turned on, you could hear the clicking noises as the ECM went through its start up diagnostics. When it came for the fuel injector test cycle you could hear each one test fire, but rather than the car starting during the next cycle. The test sequence kepped repeating. Until the key was turned off. The ECM should only allow the test fire for one cycle.
RESULT: Replaced the ECM computer module with a remanuf. Unit for $200. Now the car runs without any stalling or cuitting out. You will need the origional plug in chip from your ECM to use in the new one.
May, 5, 2012 AT 12:29 PM
Had the same problem with my royale. Would just stop running for no apparent reason. Also thought it was connected to the electric window as I would hit the door in that area and it would start again. Also would start again after being allowed to sit for awhile. Due to amount of wiring the car has, oldsmobile placed grounding blocks at various points in the car to ground different systems. My car was dying because the fuel pump was periodically grounding out because of the wiring at the grounding block. I had it repaired at a shop and do not know the exact location but they said it was behind the panel by the drivers left foot near the door. Hope this helps.