Stalling, bucking, and Drivability issues at operating temperatures

[2023Mach1]

Good afternoon everyone!

I am in need of assistance with my 2023 Mach1.

I recently started having trouble with the car that seems to derive from getting some questionable gas.

I have been working on this issue for a month with various of shops providing diagnostics that do not fit my reads of the PIDs during my diagnostics.

I only have the problems once the car goes into closed loop.

I have replaced the throttle body, cam sensor B on both banks and the crankshaft sensor.

The Symptoms seemed to have gotten better after changing the parts, but that was before I realized that the issue was only happening during closed loop.

I found an issue with my fuel system that may be washing out my cylinders.

History-
Car is stock now but prior to returning to stock I had a ESS g3 kit installed, BAP/pump 93, wengerd tuned.

It’s time for new spark plugs, but my car did not seem to like the NGK colder gapped installed from the first shop that diagnosed my car with bad VCT solenoids (two where replaced, same code returned during CL-NORMAL operation)

After getting tired of miss diagnoses due to the Christmas rush- I decided to data log and hunt down parameters that were off per the ECU/PCM and sensors.

I always suspected a fuel issue due to how the issues started.
I have never raced the car. I have only done three WOT the whole time I have had the car both supercharged and stock. I purchased the car with 3miles on it.

So the parameters that I found off were the fuel rail pressure actual vs Fuel rail pressure desired.

My fuel rail pressure actual rrsds 1400PSI after starting and it slowly climbs until the car starts to idle bad, buck, and stall.

The fuel rail pressure desired at idle is 400-500psi and increases to 1000psi at a rpm 2k

However, the fuel rail pressure actual does not follow the desired pressure and it keeps climbing and only decreases if I rev the engine. After revving the engine the idle becomes stable again until the psi gets 3x times the desired and then it misfires, bucks and loses idle.

I removed the fuel pump, the BAP, and the FDCM(fuel driver control module) and test the Fuel Rail Pressure sensor(upper), and cleaned the fuel rail sensor to the best of my knowledge.

I have replacements for all of those mentioned above being delivered too me.

I would like to know if anyone has seen this issue before.

Thank in advance.

PS I’m fully stock now, tune restored from ford
.
I’ll provide data logs shortly.

Sponsored

 

[IPOGT]

Isn’t your car still under warranty?

 

[Rapid Red]

Isn’t your car still under warranty?

 

[2023Mach1]

Ford declined my powertrain warranties due bolt on supercharger…ESS G3

 

[2023Mach1]

Good afternoon everyone!

I am need of assistance with my 2023 Mach1.

I recenter start have trouble with the car that seem to have come from getting some questionable gas.

I have been working on this issue for a month with various of shops providing diagnostics that do not fit my reads of the PIDs during self diagnostics.

I only have the problems one the car goes into closed loop.

I have replaced the throttle body, cam sensor B on both banks and the crankshaft sensors.

Symptoms seemed to have gotten better but that before I realized that the issue was only happen during closed loop.

I found an issue standing out to me that answers my question of my cylinders possibly being washed out by gas.

History-
Car is stock now but prior to returning to stock I had a ESS g3 kit installed, BAP/pump 93, wengerd tuned.

It’s Time for new spark plugs but my car did not seem to like the NGK colder gap installed from the first shop that diagnosed my car with possibly bad VCT solenoids (two where replaced, same code return during CL-NORMAL)

After getting tired of the possibility of miss diagnoses due to Christmas rush- I decided to data log and hunt down parameters that off per the ECU/PCM and sensors.

I always suspected a fuel issue due to how the issues started.
I have never raced the car and I have only done three WOT the whole time I have had the car both supercharged and stock. Bought the car with 3miles on it.

So the parameters that I found off was the fuel rail pressure actual vs Fuel rail pressure desired.

My fuel rail pressure actual read 1400PSI after starting and it slowly clumps until the car start to idle bad, buck, and stall.

The fuel rail pressure desired at idle is 400-500 and increases to 1000 at a rpm 2k

However, the fuel rail pressure actual does not follow it and keeps climbing and only decrease if a rev the engine. After rev the idle will stable again until the psi gets 3x times the desired and then it misfires, bucks and loses idle.

I removed the fuel pump, removed the BAP, removed the FDCM(fuel driver control module) and test the and cleaned the fuel rail sensor to the best of my knowledge.

I have replacement for all of those mentioned above.
I would like to know if anyone has seen this issue before.
Thank in advance.

PS I’m fully stock now, tune restored from ford
.
I’ll provide data logs shortly.

 

[K4fxd]

Not trying to be a dick but you need to proof read your post and edit it so it makes sense. Is english your first language?

 

[2023Mach1]

Not trying to be a dick but you need to proof read your post and edit it so it makes sense. Is english your first language?

I was working during the type up and rushing. I went through and corrected some of the errors.

 

[S550VIN54]

What error code did you see? I saw someone posted an issue similar (P0021)to yours and they ended up replacing the vvt sensor on the pass. SIde . Hope this helps!

 

[Gregdd]

Did this start before you removed ess kit ?

 

[2023Mach1]

What error code did you see? I saw someone posted an issue similar (P0021)to yours and they ended up replacing the vvt sensor on the pass. SIde . Hope this helps!

Hi I get no code until the car get to CL-Normal but at that time it starts to misfire and throw timing codes(misfire random, p0300, p0301-8, p0017,0019,0025..

 

[2023Mach1]

Did this start before you removed ess kit ?

Yes

 

[Pistol_91]

I don't think it has to do with your fuel. It's pretty common the desired and actual rail pressure are off. Maybe the BAP fried your fuel pump. Maybe it's something completely different. Sounds completely different. Did you have the stock tune put back on in assuming?

 

[2023Mach1]

Hi I get no code until the car get to CL-Normal but at that time it starts to misfire and throw timing codes(misfire random, p0300, p0301-8, p0017,0019,0025..

The VCT were replaced on both banks for sensor B. Problem remains. Have you ever seen fuel pressure that high at the rails and climbing at idle?

I don't think it has to do with your fuel. It's pretty common the desired and actual rail pressure are off. Maybe the BAP fried your fuel pump. Maybe it's something completely different. Sounds completely different. Did you have the stock tune put back on in assuming?

The stock tune is back on the car.

the fuel status changes to op - fault when it starts the idle and issues mentioned.

The Fuel pressure at the rail was 1900psi while desired remained at 400.

Is it normal for it to be off that much?

I have a data log of when my car was running fine and the fuel rail pressure never got that high even at rev of 4500rpm.

 

[shogun32]

The bap and it's controller have long since been removed, ya?

How smart is the fuel pump? Does it not detect pressure on its own? Or is it a dumb device that the ECU must command on/off for flow and pressure?

 

[S550VIN54]

Curious if maybe one of the coil packs are bad.

Sponsored