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Why 89 20i cav will not start only start on a tow but dies after 10 seconds feels like fuel but checked and got a good spark?
Wiki User
∙ 18y ago
Often a fuel filter will be partially blocked and the fuel pressure will drop after the engine runs for a short time. Also, a fuel filter can run well for a short time and then fail from bad bearings or heat. Electronic components are notorious for failing after they have run briefly. If an electronic component fails it can appear to be just fine while you're testing it, but fail shortly after starting the engine. Often an engine will run briefly but the injector computer does not receive the indiction that the engine is running, and the computer will shut down the fuel pump. In fact, that usually happens after about 10 seconds. That's plenty of alternatives for you to check out. If you can get a GM code scanner you should be able to get some kind of reading. Good luck.
Wiki User
∙ 18y ago
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