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89 S10 pu 4.3 efi shuts down after starting

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Old Jun 21, 2014 | 10:41 AM
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Question 89 S10 pu 4.3 efi shuts down after starting
I identified a bad #5 plug wire. Replaced all wires, cap & rotor. Truck starts fine, but shuts down after 1-2 mins. After sitting 1 min it starts right up, but shuts down again 1-2 mins. Any ideas?
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Old Jun 21, 2014 | 12:25 PM
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The first place I would start would be to check the fuel pressure to see if the fuel pump is working correctly.
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Old Jun 23, 2014 | 6:55 PM
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Thank you, CF, I checked the fuel system - all is OK.

The way the truck shuts off so quickly and completely, makes me think it is electrical not fuel.

All thoughts are welcome. Thank you.
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Old Jul 2, 2014 | 2:59 PM
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Sounds like it is electrical. Look for something that heats up. My guess would be the ignition module. They get hot. And/or fuel relay.
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