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Re: Please help a blonde - stalling 1990 Lumina
Like most people, I think, we don't post unless we think we know the answer. Topping off with water antifreeze or any combo won't matter. You can read the jug for best ratio for your situation 70/30 for example best freeze protection. Buy a $2 tester at Wal Mart or auto store and check the coolant mix in the vehicle to be sure it is correct. These problems seem to happen by coincidence to other actions, don't assume they are always related or you can get on the wrong track.
Try to see when it happens, hot, cold weather or engine temp. Does it happen with mileage, does it start right up. When restarted is it better or same etc.
Check plug wires are all connected, vacuum lines all connected. These types of things can get disturbed during maintenace.
Let us know if it improves after relearn and maybe we will give it another stab.
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