It is very possible that your battery simply needs to be serviced. Check the water level to make sure that your lead plates are covered. Also it is possible that your battery terminals are corroded. Clean them up so that fresh lead is exposed and do the same with the cable connectors that attach to the battery terminals. You might get a couple of more years out of that Interstate.

Either of the above conditions will give you the symptoms you describe. (low fluid level or corroded terminals and cables)

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Earl



1993 190E 2.3
2000 Toyota 4x4 Tundra