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Thread: 4runner Runs and Dies. Extensive diag. Running out of options.
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Old 10-27-2020, 11:25 PM
toyotaspeed90 toyotaspeed90 is offline
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Location: Sedro-Woolley, WA
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toyotaspeed90 toyotaspeed90 is offline
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Join Date: Sep 2018
Location: Sedro-Woolley, WA
Posts: 178
toyotaspeed90 is on a distinguished road
Sounds like it's starting for the initial cranking... have you tried to leave the fuel pump jumper in the diag port in place while trying to start?

At initial cranking it will supply fuel but if there are no ignition events it will either cut spark or fuel (depending on vehicle)... it's a safety feature to shut the engine down (and fuel pump) down in the event of am accident.

I would also try the starter relay... and check your ignition switch. Certain circuits work different whether 'on' or 'start'.
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