2017 Edge wants to stall in Drive/Reverse

[mattP]

I have a weird issue where the car will stumble and stall in D or R, but in neutral and park its perfectly fine. I had the P0456 and P1450 codes so I replaced the evap purge valve. My car has 194k miles and I find that I have to replace this valve every 80k miles or so. Anyhow, this time around I replaced the purge valve and it did NOT fix the issue. Someone had me check out the vapor canister vent valve as well, that did not fix my issue. Any ideas? My gut tells me it's fueling related because the car smells like gas when I put it in D or R.

 

 

 

Edited May 9 by 1004ron

[mattP]

So i ended up running the tests that livernois has on their handheld and I saw a P1116 code. I spent 7-8 hours tearing the car apart to get to the coolant temp sensor and replace it.  I ended up breaking the tiny overflow line so I'm just waiting on that to come in to button the car up.

[1004ron]

What did you use to read the codes previously?

[1004ron]

I doubt that a bad coolant sensor would result in the symptoms you describe.

[fishx65]

I made the mistake of using an Autozone purge valve and I've had them replace it under the lifetime warranty 4 times. Maybe you installed a defective purge valve.

[1004ron]

I've tried 3rd party purge valves that malfunction out of the box and now only use Motocraft, but I have never had the engine cut-out or stall with a bad purge valve.

 

@mattP hasn't responded here so we'll never know what the real issue is.

[mattP]

On 5/12/2026 at 4:20 PM, 1004ron said:

What did you use to read the codes previously?

Livernois handheld flasher. The one you use to tune the car.

 

On 5/12/2026 at 4:22 PM, 1004ron said:

I doubt that a bad coolant sensor would result in the symptoms you describe.

It's a stretch for sure, but in my BMW a coolant temp sensor going will cause these exact symptoms.  

23 hours ago, fishx65 said:

I made the mistake of using an Autozone purge valve and I've had them replace it under the lifetime warranty 4 times. Maybe you installed a defective purge valve.

I unfortunately have been around this a bunch. I've been through 4 different purge valves, 2 of them being direct from ford. 

 

Right now I'm still waiting on a coolant line to come in and it won't be until Tuesday. So thats when I'll find out if the car is still acting like a fool.  If it it's I'm going to drive it until I get some codes.    

[1004ron]

I don't have any experience with the Livernois but there's been many reports of Forscan or Forscan Lite showing codes where others have failed to - that and the fact that Forscan Lite is free I always advise folks to use that.

[mattP]

On 5/17/2026 at 10:24 AM, 1004ron said:

I don't have any experience with the Livernois but there's been many reports of Forscan or Forscan Lite showing codes where others have failed to - that and the fact that Forscan Lite is free I always advise folks to use that.

I never heard of forscan! Great idea. I'm going to order the adapter tonite.

[enigma-2]

Because you stated you smell gas when put in gear suggests a damaged or cracked charcoal canister or hose. 

[mattP]

Coolant temp sensor made no impact. I got my forscan dongle coming tomorrow so I'm looking forward to scanning the car. This is absolutely driving me bonkers. 

[1004ron]

In preparation download the free phone app ForscanLite

 

https://apps.apple.com/us/app/forscan-lite-for-ford-mazda/id892347083

 

https://forscan.org/download.html

 

In addition to the confidence when reading stored codes, you can display live trends of things like RPM, throttle POS and O2 sensors and observe them at the time you put it in gear.

 

 

.

Edited Wednesday at 11:08 PM by 1004ron

[mattP]

On 5/20/2026 at 7:01 PM, 1004ron said:

In preparation download the free phone app ForscanLite

 

https://apps.apple.com/us/app/forscan-lite-for-ford-mazda/id892347083

 

https://forscan.org/download.html

 

In addition to the confidence when reading stored codes, you can display live trends of things like RPM, throttle POS and O2 sensors and observe them at the time you put it in gear.

 

 

.

Thank you very much. I scanned it tonite and it looks like a fuel pressure sensor issue. It makes me sad, because I just had it all apart for the coolant temp sensor.  Here's everything forscan gave me for the error:

 

Code: P00C6 - Fuel Rail Pressure Too Low - Engine Cranking Bank 1

Status (-AC):
 - DTC Maturing - Intermittent at Time of Request
 - Malfunction Indicator Lamp is On for this DTC

Module: Powertrain Control Module

 Freeze Frame  #1:

 Freeze Frame  #2:
-EVENT_TIME: 295695606 s (Wed May 20 17:21:02 2026) - Event time
-TOTAL_DISTANCE: 312667 km - Total Distance
-FUELSYS: Closed Loop  - Fuel System Status (Open/Closed Loop)
-LOAD: 63.14 % - Calculated Load Value
-ECT: 115 °F - Engine coolant temperature
-SHRTFT1: 4.69 % - Short term fuel trim 1
-LONGFT1: 10.94 % - Long term fuel trim 1
-SHRTFT2: -4.69 % - Short term fuel trim 2
-LONGFT2: 9.38 % - Long term fuel trim 2
-MAP: 11.3 psi - Manifold absolute pressure sensor
-RPM: 622 1/min - Engine Revolutions Per Minute
-VSS: 0.0 mph - Vehicle Speed
-SPARKADV: 13.50 ° - Spark Advance
-IAT: 81 °F - Intake Air Temperature
-RUNTM: 35 s - Time Since Engine Start
-EVAP_PCT: 0.00 % - Commanded Evaporative Purge
-FLI: 30.20 % - Fuel Level
-BARO: 14.5 psi - Barometric pressure
-VPWR: 14.66 V - Control Module Voltage
-TP_REL: 6.27 % - Relative Throttle Position
-TAC_PCT: 7.84 % - Commanded Throttle Actuator Control
-RPMDSD: 879 1/min - Desired Idle Speed RPM
-O2S12: 0.28 V - Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 2)
-O2S22: 0.08 V - Heated Exhaust Gas Oxygen Sensor (bank 2, sensor 2)
-TQ_CNTRL: Idle Speed Control  - Torque Control Requested
-ENGOFF_TIMER: 245 s - Timer since Engine Off
-APP_FLT: No Fault  - Accelerator Pedal Position Sensor Status
-MISFIRE: No  - Engine Misfire currently detected
-IAT_F: No Fault  - Inlet Air Temperature Sensor Status
-ETC_TRIM_LRN: Yes  - Throttle Angle Offset has Learned
-TP_F: No Fault  - Throttle Position Sensor Status
-MP_LRN: Yes  - Misfire Profile Correction Learned
-MAF_F: No Fault  - Mass Air Flow Sensor Status
-MAP_F: No Fault  - Manifold Absolute Pressure Sensor Status
-APP1: 0.78 V - Accelerator pedal position sensor 1
-APP2: 0.39 V - Accelerator pedal position sensor 2
-TP1: 4.24 V - Throttle Position Sensor 1
-TP2: 0.76 V - Throttle Position Sensor 2
-GEAR: 1  - Gear Commanded
-GEAR_OSC: 1  - Gear Command by Output State Control
-TSS_SRC: 0 1/min - Actual Turbine Shaft Speed
-OSS_SRC: 0 1/min - Actual Output Shaft Speed
-TFT: 82 °F - Transmission Fluid Temperature
-TR: Reverse  - Transmission range
-PROG_FLOWTRACE1: 0   - Program Flow Trace Information - 1
-PROG_FLOWTRACE2: 0   - Program Flow Trace Information - 2
 

[1004ron]

59 minutes ago, mattP said:

Thank you very much. I scanned it tonite and it looks like a fuel pressure sensor issue. It makes me sad, because I just had it all apart for the coolant temp sensor.  Here's everything forscan gave me for the error:

 

Code: P00C6 - Fuel Rail Pressure Too Low - Engine Cranking Bank 1

It's a common mistake to assume the sensor is at fault and replace it, when in fact the issue is being identify by the fully functional sensor.

 

A fault code is just the starting point for further diagnostics, not a solution.

 

It may be a few causes such as a bad high pressure fuel pump or injectors leaking by badly.