Vegas Sporty
Member
- Joined
- Aug 15, 2018
- Messages
- 59
- Reaction score
- 41
- Location
- Las Vegas
- What engine do you have?
- V6 engine
- What year is your Sport Trac?
- 2001
- What Generation is your Sport Trac?
- 1st Gen Owner
This issue I've been dealing with for over 5+ years with our 2001 Sport trac. No engine light or codes to trace problem. It all began years ago with a miss diagnose of a failing fuel pump by reputable mechanic (I thought). Unfortunately this stalling problem arose again the next summer months only hot weather driving. Of course the pump was now out of warranty (one year) of course I thought the pump has failed again? So contacted a friend with a lift and replaced with another pump myself this time saving $450. That's when I became educated about the "non-return fuel system" with "variable speed fuel pump" my particular sport trac inherited at birth. We have owned this vehicle from new so we are just a little bit sentimental. With only 35,800 on the odometer as of this post is the reason we kept up the trial and error of this grocery getter over the years. Anyway just a small list of replacement parts over the past 5 years: Vacuum lines and elbows, EGR, valve body position sensor, battery, alternator, crank position sensor, coil pack, wires, plugs, wrapped fuel lines near engine (vapor lock?), fuel filter, Idle control valve, PCM/ECM Engine computer, fuel pump etc, etc, etc.
Again I was thinking I finally got this fixed then the mysterious symptoms would reveal themselves during summer months, which if you drive it approx. 30 minutes or more and parked in an open parking lot in the heat and return its restarts fine but as I begin driving it would stall turning the steering wheel slightly left then it would get so bad it would stall again and again going straight as well. If you're able to slip into neutral while rolling or stopped at side of the road it would restart right away. Again no engine light, no signs of over heating. Pressing on the accelerator only made it stall worse and don't restart at all. I began to focus at the intake gaskets thinking maybe, however the idle was fine at other times when it wasn't acting up so was unsure about the gaskets.
As I mention this 2001 has the "non-return fuel variable speed pump system". So I began to again educate myself about this unique system and the different components which make up this system and what was the purpose why Ford used this. Seems fuel vapors were a concern building up in the tank. So Ford installed a recycling system (not uncommon in other makers) so the vapors that upon increase (I guess?.. maybe the heat?) the system would engage and the vacuum from engine would draw vapors (from tank) back into the engine via use of various sensors upon signals. I'm no expert but I was thinking I came upon something which turned out the be the fault of my own bad habit. The habit was over filling my tank for years. I read online about this and its not a good idea and reasons and symptoms because of over filling your tank. In my case it resulted ( I believe) in causing the charcoal canisters and sensors connected with this recycling system to fail. So my fix, I replaced both "charcoal canisters" and the "Purge Valve Solenoid" as well as the"Fuel Tank Pressure Sensor", all part of this recycling system. This system would misdiagnose in my case and causing air to enter the intake causing stalling and erratic engine behavior. Not to mention the "Fuel Tank Pressure Sensor" communicates with the PCM/ECM failing to adjusting fuel pressure as needed at the fuel rail upon engine demands. Unfortunately the charcoal canisters are discontinued and or back ordered from Ford, however I found them on eBay Ford OEM's which were from a dealership out of Texas. The replacing the fuel tank pressure sensor was a slight challenge because of location however I able using my motorcycle lift supporting the tank (3/4 full of gas) and lowered it by removing the tank strap about 6 inches to reach the sensor keeping the front bolt intact on the tank.
Well the summer is here with temps reaching well into the 100's. and today the temp showing was 114 as I drove for over an hour stop and go and turning the engine off and driving again with A/C on max. I believe the mystery is solved!!!... I hope. Believe me I have several times just wanted to drive it to the ford dealership and just trade it but always thought somewhere somehow it might be an easy fix. Unrelated, Have a friend who just bought new Maverick (sporttrac clone LOL ) and he told me his A/C stopped working and he got a recall notice from Ford the warned him not to park it in an enclosed garage because of possible of unexpected fire. He has the hybrid. I'm keeping my Sport Trac, however least to say I'm not going to be over filling my Sport Trac's tank anymore LOL
Again I was thinking I finally got this fixed then the mysterious symptoms would reveal themselves during summer months, which if you drive it approx. 30 minutes or more and parked in an open parking lot in the heat and return its restarts fine but as I begin driving it would stall turning the steering wheel slightly left then it would get so bad it would stall again and again going straight as well. If you're able to slip into neutral while rolling or stopped at side of the road it would restart right away. Again no engine light, no signs of over heating. Pressing on the accelerator only made it stall worse and don't restart at all. I began to focus at the intake gaskets thinking maybe, however the idle was fine at other times when it wasn't acting up so was unsure about the gaskets.
As I mention this 2001 has the "non-return fuel variable speed pump system". So I began to again educate myself about this unique system and the different components which make up this system and what was the purpose why Ford used this. Seems fuel vapors were a concern building up in the tank. So Ford installed a recycling system (not uncommon in other makers) so the vapors that upon increase (I guess?.. maybe the heat?) the system would engage and the vacuum from engine would draw vapors (from tank) back into the engine via use of various sensors upon signals. I'm no expert but I was thinking I came upon something which turned out the be the fault of my own bad habit. The habit was over filling my tank for years. I read online about this and its not a good idea and reasons and symptoms because of over filling your tank. In my case it resulted ( I believe) in causing the charcoal canisters and sensors connected with this recycling system to fail. So my fix, I replaced both "charcoal canisters" and the "Purge Valve Solenoid" as well as the"Fuel Tank Pressure Sensor", all part of this recycling system. This system would misdiagnose in my case and causing air to enter the intake causing stalling and erratic engine behavior. Not to mention the "Fuel Tank Pressure Sensor" communicates with the PCM/ECM failing to adjusting fuel pressure as needed at the fuel rail upon engine demands. Unfortunately the charcoal canisters are discontinued and or back ordered from Ford, however I found them on eBay Ford OEM's which were from a dealership out of Texas. The replacing the fuel tank pressure sensor was a slight challenge because of location however I able using my motorcycle lift supporting the tank (3/4 full of gas) and lowered it by removing the tank strap about 6 inches to reach the sensor keeping the front bolt intact on the tank.
Well the summer is here with temps reaching well into the 100's. and today the temp showing was 114 as I drove for over an hour stop and go and turning the engine off and driving again with A/C on max. I believe the mystery is solved!!!... I hope. Believe me I have several times just wanted to drive it to the ford dealership and just trade it but always thought somewhere somehow it might be an easy fix. Unrelated, Have a friend who just bought new Maverick (sporttrac clone LOL ) and he told me his A/C stopped working and he got a recall notice from Ford the warned him not to park it in an enclosed garage because of possible of unexpected fire. He has the hybrid. I'm keeping my Sport Trac, however least to say I'm not going to be over filling my Sport Trac's tank anymore LOL