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You shouldn't replace anything until you've checked out the diagnostic codes. Find out what the computer has detected. Then start going through to isolate the problem. If you just replace a bunch of parts, I can almost guarantee that something will get connected wrong then you'll NEVER be able to find the problem.

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17y ago
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14y ago

If your 88 Delta 88 has no spark.... Step 1: Make sure you have good ignition fuse to begin with. Step 2: Second make sure you have a 12 volt supply of power to the Ignition module. Step 3: Remove the coil pack, or packs (pending on wich ignition system you have, either 3 or 1 pack. Ensure the tabs that connect to the Packs are not broken. This is very common. Step 4: Remove the ignition module and take it to a local Auto Zone. A repair shop is very expensive usualy, and because the vehicle is so old, most repair shops are full of technicians who aren't familiar with solid state components, and how to test them. Auto Zone can and will test these components for free if you bring them in. The Module is about 100 bucks. Also during step 4, if the coil pack is the single pack, please use a piece of paper to write down the sequence of colors for the wiring. There should be 4 blues, 1 green, and1 yellow. Do not mess this up or you will have a head ache later. Step 5: Crank positioning sensor. This part is used for the timing of the fire, and rarely causes no spark, but in rare cases it will. If all steps are in good condition and components are functioning properly, the vehicles ECM is likely not grounding properly, and will need to be replaced. This cost 75 bucks. Most likely from my experience. The GM Ignition module for this car is bad. they are located on the rear of the engine compartment, and above the exhaust system, and generaly take alot of heat stress. There are technical service bullitins for this known issue, and is the go to component in most repair shops. I hope this helps you find your issue.

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Q: What parts should i replace no spark on a 1990 Oldsmobile 98?
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