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Fuel pump outlet line disconnect at filter turn key on pump 3 sec runs then stop

(1990 Geo Tracker)
in Gardner, KS on August 18, 2017
At times engine will stop running. after cranking for a couple of minute it will start and run okay for a time at time it idles at 2000rpm
Tags: geo, tracker
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Popular Answer
on August 24, 2017
Hello, it is very likely that the fuel pump is only meant to run until the fuel system is primed. After the engine is turned on, the fuel pump should run until the key is turned off. It sounds like it is operating properly.
If it is running at high idle, I would first suspect a vacuum leak.
Is there any damage to vacuum lines, hissing, or a way to make the issue better or worse?
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