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2006 TUNDRA: CRANKS BUT WON'T START... THIS HAPPENS ON COOL

Customer Question
2006 TUNDRA: CRANKS BUT WON'T...
2006 TUNDRA: CRANKS BUT WON'T START...
THIS HAPPENS ON COOL MORNINGS, EARLY. THIS I HAVE NOTICED BUT I DON'T KNOW IF TEMPERATURE HAS ANYTHING TO DO WITH IT.
ONCE THE DAY TEMPERATURE RISES, IT STARTS AND WILL START ALL DAY LONG AT EVERY PLACE I TURN IT OFF...GAS STATION, STORE, ETC.
MY MECHANIC CAN'T TROUBLESHOOT IT BECAUSE THEY START AT 8 AM AND BY THEN IT'S WARM OUTSIDE AND THE TRUCK STARTS! NOTHING WRONG, HE SAYS.
ONLINE FORUMS POINT ME TO THE FUEL PUMP RELAY.
I WILL INVEST IN A NEW ONE AND TRY IT, WHAT ARE YOUR THOUGHTS?
Submitted: 5 months ago.Category: Toyota
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Answered in 5 minutes by:
6/15/2017
Toyota Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 5 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Toyota
Satisfied Customers: 4,130
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles
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Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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Toyota Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 5 months ago

Hey how are you

the fuel pump relay is a common problem ,but if we crank over & no start , that means we are missing fuel or spark or both ?

so what are we missing at the time of no start condition :

1- lets check fuel first easier ? when you turn switch from OFF to ON, the fuel pump supposed to come on for few seconds to prime fuel rail ,u can hear buzzing ,have an assistant at switch and you at filler cap ,do you hear Buzz?

another way if you have starting fluid ,when it does not start,spray in tb body or intake & start it , does it start & dies after few seconds ?

lets start here & we go from t here

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

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Customer reply replied 5 months ago
thanks for your help. I replaced the fuel pump relay and it works now.
Toyota Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 5 months ago

Awesome news man i m glad

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Chad Farhat
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Toyota
Satisfied Customers: 4,130
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Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles

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