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I have a 91 Sonoma that won't start without starting fluid

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and then it runs fine...
I have a 91 Sonoma that won't start without starting fluid and then it runs fine - never misses a beat. My mechanic replaced the ignition coil,cap & rotor, fuel filter, fuel pump, fuel pressure regulator diaphragm, coolant temp sensor and injector. Nothing helped and he gave up. What could the problem be?
Submitted: 2 years ago.Category: GMC
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Answered in 3 hours by:
9/6/2015
GMC Mechanic: Tims Auto Repair, GMC Mechanic replied 2 years ago
Tims Auto Repair
Tims Auto Repair, GMC Mechanic
Category: GMC
Satisfied Customers: 16,087
Experience: have owned a repair shop for 25 years
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Hi, My name is ***** ***** for the delay.

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this sounds as if you have a bad ignition module

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GMC Mechanic: Tims Auto Repair, GMC Mechanic replied 2 years ago

what is going on is that the starter is pulling amps away from the bad ignition module

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GMC Mechanic: Tims Auto Repair, GMC Mechanic replied 2 years ago

thus,killing the fuel injector pulse

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GMC Mechanic: Tims Auto Repair, GMC Mechanic replied 2 years ago

it will still have a spark when they do this but the fuel injectors wont work while the starter is turning

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GMC Mechanic: Tims Auto Repair, GMC Mechanic replied 2 years ago

this is why it will start with a prime

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GMC Mechanic: Tims Auto Repair, GMC Mechanic replied 2 years ago

replace the ignition module

thanks

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