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Truck wants to shut off when I turn corners and check engine light is on

Tiny
LACEY VASQUEZ
  • MEMBER
  • 2002 FORD F-150
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 250,000 MILES
Everytime I turn a corner my truck will act like it going to shut off, it never does but it tries to. I have done all basic things like checking fuel lines fuel pump ect, replaced all those. Could it be the fuel filter maybe? The only thing I haven't checked. I even have new coil packs, spark plugs, fuel injectors and all the connectors too. Also my check engine light on.
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Monday, July 12th, 2021 AT 10:37 AM

7 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

Does this happen anytime you turn the steering wheel (driving or stationary)?
Do you hear any type of noise when you turn?

Based on this information, I am not sure these guides will help but let's run through them and see if there are things there that you have not tried:

https://www.2carpros.com/articles/engine-stalls

https://www.2carpros.com/articles/stall-at-idle

The next two things we should do are check the codes if your check engine light is on and check the fuel pressure.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

There could be several factors for this to happen so let me know what codes you have and we can go from there.
Please let me know.

Thank you.
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Monday, July 12th, 2021 AT 2:20 PM
Tiny
LACEY VASQUEZ
  • MEMBER
  • 8 POSTS
P0174 is the code I'm getting too lean in bank 2.
It doesn't make any noise when I turn and after the turn it corrects itself and starts running fine again. It doesn't always do it when I turn only when I have low fuel it seems like.
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Monday, July 12th, 2021 AT 4:06 PM
Tiny
LACEY VASQUEZ
  • MEMBER
  • 8 POSTS
I have also replaced the throttle body position sensor motor and the idle air control valve and EGR valve.
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Monday, July 12th, 2021 AT 4:09 PM
Tiny
LACEY VASQUEZ
  • MEMBER
  • 8 POSTS
I have also replaced the fuel pump and hoses going to gas tank.
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Monday, July 12th, 2021 AT 4:11 PM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Have you got a chance to check for any vacuum leaks on the truck?

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Let me know please.
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Tuesday, July 13th, 2021 AT 8:13 PM
Tiny
LACEY VASQUEZ
  • MEMBER
  • 8 POSTS
It ended up being the PCV hose (previously only changed the valve) was the problem for the turning issue. So that is not happening anymore but I still have a code p0174. Truck was running fine but yesterday my rear passenger Caliper started smoking. Is this related to the code I'm getting?
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Wednesday, July 28th, 2021 AT 1:41 AM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Have you tried clearing the code?
Usually the code does not go away even if the issue is gone, unless the code is cleared.

Here is how to clear the code:

https://youtu.be/ahK_eucFi-k

If you would please open up a new question thread for the caliper issue. I will be more than happy to help.
Thank you.
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Wednesday, July 28th, 2021 AT 6:15 AM

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