18-19 Mustang Gt issues

[Jaay_d5.0]

Just curious if anyone has solved the stalling/rough idles/rpm fluctuations on the 2018-2019 Gt 10r80s? I will be taking it to the dealership for the fourth time for the same issues.
1st dealership visit cam phasers were replaced
2nd visit roush tune was updated to latest version
3rd visit vct solenoids where cycled for any debris
After getting the car back the 3rd time the car stalled but at the time it was below level on anti freeze ever since i filled it up to max I didn’t stalled it been about two weeks just experiencing rough idles and rpms fluctuations from 600-1400 k
Side note stalling occurs with foot on brake pedal at a complete stop while on drive mode is when i usually experience these intermittent issues.
Is there any tsb on this yet?

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[ORRadtech]

Question, do you top off the tank past the auto shut off when filling the tank?
If so, look into the Evap Purge Valve.

 

[Jaay_d5.0]

Question, do you top off the tank past the auto shut off when filling the tank?
If so, look into the Evap Purge Valve.

I have top off the tank after the auto shut off just a tiny bit. You talking about fuel right? And dealer checked out the evap purge valve but still stalling and rough idles

 

[ORRadtech]

It was just a thought.
Topping off will ruin the EPV and cause your symptoms without throwing a code.
I've had it happen on two ford's so far. My mustang and edge.
Good luck.

 

[Elp_jc]

Can somebody post a picture of where exactly is the evap purge valve on a '19 Bullitt? I ask because not long ago, the fuel pump I was using was defective, didn't shut off, and by the time I saw the mess on the floor, it spilled at least a gallon. I had to get home right away, which is like 3 miles away, and couldn't use the car until the next day. So I'm afraid I might have issues in the near future... if it's that easy to damage it. And how about the canister? How can I know if it filled with fuel? And if it did, is it ruined, or not? Car is working perfectly so far, but if that valve is cheap, might change it proactively. Thx.

 

[brianbr]

Just curious if anyone has solved the stalling/rough idles/rpm fluctuations on the 2018-2019 Gt 10r80s? I will be taking it to the dealership for the fourth time for the same issues.
1st dealership visit cam phasers were replaced
2nd visit roush tune was updated to latest version
3rd visit vct solenoids where cycled for any debris
After getting the car back the 3rd time the car stalled but at the time it was below level on anti freeze ever since i filled it up to max I didn’t stalled it been about two weeks just experiencing rough idles and rpms fluctuations from 600-1400 k
Side note stalling occurs with foot on brake pedal at a complete stop while on drive mode is when i usually experience these intermittent issues.
Is there any tsb on this yet?

Mine got a new engine at 8k miles and it runs perfect now...

 

[Jaay_d5.0]

Mine got a new engine at 8k miles and it runs perfect now...

What issues where you experiencing?

 

[brianbr]

Rough idle and low oil pressure. I posted a thread in this section not too long ago.

 

[Rapid Red]

I'm curious abut this: Roush tune was updated to latest version.

I would think anyone having a software key would get a heads up on something like that ?

Need check that one, thanks for saying.

 

[Jaay_d5.0]

Rough idle and low oil pressure. I posted a thread in this section not too long ago.

When getting a new engine did they change your carfax title to rebuilt?

Rough idle and low oil pressure. I posted a thread in this section not too long ago.

It sucks that a lot of us 18-19 owners are experiencing issues like these! But did they change the title of the carfax to rebuilt?

 

[Jaay_d5.0]

I'm curious abut this: Roush tune was updated to latest version.

I would think anyone having a software key would get a heads up on something like that ?

Need check that one, thanks for saying.

Yeah i contacted roush about it and they told me the calibration (tune) i had needed to be updated because of delays shifts and feelings of the trans is searching for a gear some owners were Experiencing

 

[Jaay_d5.0]

I noticed when my car was rough idling and rpm fluctuating the air fuel ratio would go up a bit.

 

[sk47]

Car is working perfectly so far, but if that valve is cheap, might change it proactively. Thx.

Hello; This information may not apply. Saw an automobile TV show where it was explained that while in the past some of the valves could be replaced independently, that now they are part of a larger, more expensive, unit. The information was not make specific.

 

[ORRadtech]

Hello; This information may not apply. Saw an automobile TV show where it was explained that while in the past some of the valves could be replaced independently, that now they are part of a larger, more expensive, unit. The information was not make specific.

The Evap valve on the Mustang is replaceable.
It's up near the firewall on the drivers side.

 

[ORRadtech]

When getting a new engine did they change your carfax title to rebuilt?

It sucks that a lot of us 18-19 owners are experiencing issues like these! But did they change the title of the carfax to rebuilt?

Titles are only changed to "rebuilt" if the vehicle has been totaled and then restored to operation.
A warranty replacement of any part, including the engine or transmission doesn't qualify for a rebuilt title. Nor does it require being reported to Carfax, etc. It may show up in a Carfax if the Ford vehicle history is reported but that would be it.

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