Power cuts off when shifting

[Navarrete77]

Hello everyone,

I recently came across an issue with my 2014 Fiesta ST and was wondering if anyone knows what’s wrong. At random times when I shift and start to accelerate my power cuts off as if I pressed down my clutch for a quick second and then starts to drive like normal. I noticed this at around 60,000 miles so I did the basic 60k maintenance thinking that would help but I still notice the issue. I would try to record it but it happens at the most random times. I only have an exhaust, bov adapter, rmm, & symposer delete. My FiST is currently at 63,000 miles. If anyone has experienced this or knows anything please let me know and thank you in advance [emoji120]


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[Fiestig]

Oyyy... A little more detail. Do you mean power as electrical power... Everything goes dark for a sec? Scary to think about. Or do you mean go go power?

 

[RubenZZZ]

Are you sure it isn’t the traction control kicking on? Is the Traction control light blinking?


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[Navarrete77]

Oyyy... A little more detail. Do you mean power as electrical power... Everything goes dark for a sec? Scary to think about. Or do you mean go go power?

Not electrical, it’s as if I completely let off the gas or pushed sown on my clutch.


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[Navarrete77]

Are you sure it isn’t the traction control kicking on? Is the Traction control light blinking?


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No lights come on when this happens


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[jmrtsus]

Bov??

 

[Navarrete77]

Bov??

Could it be? I was considering taking off my adapter.


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[jmrtsus]

Not sure but seems possible....maybe sticking open? Sure others on the Forum know more that I do about BOV's!

 

[M-Sport fan]

No codes at all?

I would start with that BOV adapter, and then somehow try to check out the drive by wire throttle body?

 

[Navarrete77]

No codes at all?

I would start with that BOV adapter, and then somehow try to check out the drive by wire throttle body?

No codes,
Will do! Thanks [emoji120]


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[TyphoonFiST]

How hot is it there? When does this happen? Could be a heat soaked Intercooler....

 

[Navarrete77]

How hot is it there? When does this happen? Could be a heat soaked Intercooler....

Lately it’s been high 70s, it’s the most randomness times when it acts up. I could be out of work cruising home at 1am and it does it or I can be getting some errands done in the afternoon and the issue pops up. It will do it one time then a day or two will pass without any issues and come back out of nowhere. It won’t happen frequently either, just once.


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[TyphoonFiST]

How old is the battery?

 

[PunkST]

Sounds like what mine was doing in the rain. Turns out i had to replace the coil packs. The leads down to the plugs were shot.

 

[TyphoonFiST]

Sounds like what mine was doing in the rain. Turns out i had to replace the coil packs. The leads down to the plugs were shot.

I always wondered if you ever solved this*

 

[PunkST]

I always wondered if you ever solved this*

That and dropping my charge piping size back down to stock ish resolved a lot of running issues. Lessons learned

Ford claims the coil packs and plugs are good for 100k.. I say half that. And youre right there at the milage.

 

[Navarrete77]

How old is the battery?

2018


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[Navarrete77]

Sounds like what mine was doing in the rain. Turns out i had to replace the coil packs. The leads down to the plugs were shot.

I’ll give that a shot! Thank you! [emoji120]


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[PunkST]

I’ll give that a shot! Thank you! [emoji120]


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I went with ngk coil packs. They were/are 25.00 a pop on rock auto.

 

[TyphoonFiST]

How many miles?