Waste Gate?
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Waste Gate?
I have a 97' F-250 that is having issues. If I start the truck in the garage and drive it, it's fine. If I turn the truck off and start it while out in town (0 to -40 degrees faranhite) it looses power because the EGR? wastegate? opens up. I could understand this happening when the engine is cold but it happens when the endine is warm and freshly driven. When I drive down the highway you can hear it opening & closing, and feel the lack of power, if I acelerate it goes away. I removed the back pressure pipe and cleaned it out thinking that it might be cloged, causing a bad reading on the sensor but that didn't help. The only upgrages I've done are a K&N air intake and it had a 2" lift w/ air bags on it when I bought it. The previous owner stared it had a 50 hp chip in it but when asked where it was he had no clue, I'm not inclined to believe him. I would rather not let the truck idel while I run erands in town just to keep it running right, & I'm not shure what way to go. This has been going on for a while and it was doing it in the late summer/fall but it would go away if I turned the truck off then started it again.
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Hey, and welcome to FTE! Lots of good knowledge around here. These trucks have no EGR, and also no waste gate. Your on the right track though somewhat, as what you are hearing is the EBPV (exhaust back pressure valve) opening and closing. While it is only supposed to open while the truck is cold and remain closed until the truck is brought up to temperature, they can fail and stick closed or open and close due to false readings.
Easiest way to find out if this is for sure your problem is to unplug it. On the lower passanger side of the turbo, there is a 2 pronged plug under the intake side. Disconnect that and see if you hear the same sound. You shouldnt, as it is unplugged and non-functional. Ill post a picture of the plug in a minute, but this should get you started.
Easiest way to find out if this is for sure your problem is to unplug it. On the lower passanger side of the turbo, there is a 2 pronged plug under the intake side. Disconnect that and see if you hear the same sound. You shouldnt, as it is unplugged and non-functional. Ill post a picture of the plug in a minute, but this should get you started.
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It will not harm anything at all. Many here have had it unplugged for years. Many have also completely deleted it. I took mine out, deleted the actuator and cut the plug and wiring out. So if you wish you can just leave it that way. Someone else will chime in with how to diagnose exactly whats wrong if leaving it unplugged bothers you. Also, i know this isnt what you posted about, but you should seriously consider getting rid of the K&N filter. On N/A motors they are great, but on engines with forced induction they have a habbit of letting too much dirt, dust, and grime by which will dust the turbo wheel and can also cause internal problems. Just a thought.
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The PCM uses the engine oil temp sensor and one other sensor, which i always forget which one, to decide when to close it. Someone help me out lol
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From: Michigan
https://www.ford-trucks.com/forums/1...nsor-info.html
BARO: Barometric pressure sensor
Strategy input; PCM uses this to adjust fuel quantity and injection timing for optimum running
and minimum smoke, also glow plug on time to aid starting at higher altitudes; 5 volts in, @4.6
volts/14.7 psi at sea level, decreasing as altitude increases. PID: BARO (pressure)
BARO: Barometric pressure sensor
Strategy input; PCM uses this to adjust fuel quantity and injection timing for optimum running
and minimum smoke, also glow plug on time to aid starting at higher altitudes; 5 volts in, @4.6
volts/14.7 psi at sea level, decreasing as altitude increases. PID: BARO (pressure)
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Joined: May 2011
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https://www.ford-trucks.com/forums/1...nsor-info.html
BARO: Barometric pressure sensor
Strategy input; PCM uses this to adjust fuel quantity and injection timing for optimum running
and minimum smoke, also glow plug on time to aid starting at higher altitudes; 5 volts in, @4.6
volts/14.7 psi at sea level, decreasing as altitude increases. PID: BARO (pressure)
BARO: Barometric pressure sensor
Strategy input; PCM uses this to adjust fuel quantity and injection timing for optimum running
and minimum smoke, also glow plug on time to aid starting at higher altitudes; 5 volts in, @4.6
volts/14.7 psi at sea level, decreasing as altitude increases. PID: BARO (pressure)
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Seen the barometric sensor on napa prolink, was wondering what that was for & where it went. I don't mind having the backpressure valve unhooked right now because the truck lives in a garage right now, but if it goes outside overnight at -40 I would think that it would be helpful on warm-up. I have noticed a drop in fuel milage but assumed it was due to the different fuel blend for winter in alaska (closer to kerocene or jet A than diesel) but I may try to find that sensor and test it. I apreciate everyones help on this matter, THANK YOU.