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Tundra won’t accelerate past 77mph, loses rpms. 2015 trd…

Customer Question
Tundra won’t accelerate past...

Tundra won’t accelerate past 77mph, loses rpms

Mechanic's Assistant: How old is the transmission? Have you checked the fuel filters?

2015 trd 4x4

Mechanic's Assistant: Are you fixing your Tundra yourself? What have you tried so far?

It just started doing it, just got the truck a few days ago

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Na that’s it

Submitted: 8 months ago.Category: Toyota
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Answered in 1 minute by:
11/10/2017
Toyota Mechanic: tech0405, Technician replied 8 months ago
tech0405
tech0405, Technician
Category: Toyota
Satisfied Customers: 11,156
Experience: Certified technican 14 years experience
Verified

What does the truck do when you try to go even faster ?? is the check engine light on ?? or blink at you ??

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Customer reply replied 8 months ago
No lights come on, it just stutters and downshifts, drops power
Toyota Mechanic: tech0405, Technician replied 8 months ago

Does it feel like a drop in fuel pressure ???

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Customer reply replied 8 months ago
No
Toyota Mechanic: tech0405, Technician replied 8 months ago

Does it feel like a abnormal shift ??

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Customer reply replied 8 months ago
It kinda does
Toyota Mechanic: tech0405, Technician replied 8 months ago

By any chance do you have a scan tool?

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Customer reply replied 8 months ago
I don’t
Toyota Mechanic: tech0405, Technician replied 8 months ago

OK i just wanted to see if there where any trouble codes in the computer , but that will need to be the first step taken and see if there are any faults in the transmission control module first before attaching a fuel pressure gauge to the fuel rain and see if fuel pressure drops under load when your loosing power . This needs to be the first step it sounds like to me like you are having fuel pressure drop under load . I hope this helps please dont forget to provide feedback for the help

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Customer reply replied 8 months ago
Well i got a check engine light that came out and the code said it was a air intake censor
Toyota Mechanic: tech0405, Technician replied 8 months ago

Can you provide me the fault #

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Customer reply replied 8 months ago
I didn’t get one, we went to autozone and they just told us it’s the air flow or air intake censor.
Toyota Mechanic: tech0405, Technician replied 8 months ago

Ok honestly they just give you a generic possibility on what the issue can be by what fault you get if they said a possible mass air flow sensor , i recommend you check to see if you have any intake leaks first just to make sure you dont have a intake air leak causing a mass air flow sensor fault check that first if you dont run into any leaks in the system then go ahead and have the mass air flow sensor checked . I hope this helps . Please dont forget to provide feedback for the help provided tonight thank you

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Customer reply replied 8 months ago
Would that stop the truck from not being able to go over 77?
Toyota Mechanic: tech0405, Technician replied 8 months ago

It can if the ecm reads the fuel trim levels which the mass air flow sensor being too off it will cause a no power issue cause the mass air flow sensor will cut off power and send a signal to the ecm . I hope this helps

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