Exhaust back pressure sensor issues--stalling
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Joined: Mar 2012
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From: Texas
Exhaust back pressure sensor issues--stalling
Anyone ever had their truck stall like it had no fuel due to a bad EBP sensor? Mine is reading 3 at idle! My fuel pressure is good, I have oil, it is been running great since installing E-fuel and a new high-pressure oil pump. This morning it stalled and then restarted but ran like it is running out of fuel. I am pretty sure it is the sensor because I have read that the PCM will defuel the truck if the sensor is bad, but I'm wondering if anybody else has experience in this.
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Joined: Nov 2004
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From: Lakewood, Washington
I don't think the EBP sensor can defuel enough to cause an engine stall. I ran with a bad one for years and even left it disconnected for a while before I bought a new one. It should be reading the same as your barometer at idle unless your EBP Valve is restricting exhaust flow to aid in warm up. Replacing my EBP sensor did help in clearing up some of the black smoke during hard accelerations and helped a little on MPG.
Do you have a way to monitor ICP during start up?
Do you have a way to monitor ICP during start up?
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Joined: Dec 2005
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From: Felton, Delaware
When i got my truck mine was reading 15psi at idle (should be 0). It never stalled. Maybe your CPS? I carry two spares because one stranded me, and i carry a spare IDM beacause one stranded me haha.
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From: Texas
Originally Posted by echo95
I don't think the EBP sensor can defuel enough to cause an engine stall. I ran with a bad one for years and even left it disconnected for a while before I bought a new one. It should be reading the same as your barometer at idle unless your EBP Valve is restricting exhaust flow to aid in warm up. Replacing my EBP sensor did help in clearing up some of the black smoke during hard accelerations and helped a little on MPG.
Do you have a way to monitor ICP during start up?
Do you have a way to monitor ICP during start up?
Originally Posted by Shawn MacAnanny
When i got my truck mine was reading 15psi at idle (should be 0). It never stalled. Maybe your CPS? I carry two spares because one stranded me, and i carry a spare IDM beacause one stranded me haha.
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From: Felton, Delaware
Sorry I should have specified that's with my edge CTS 2 which subtracts 14.6psi atmospheric so it reports at psig and not psi. With auto enginuity hooked up it reads 14.6 to 14.7. I live at sea level. So mine was actually reading around 29psi by auto enginuity
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From: Texas
Originally Posted by Shawn MacAnanny
Sorry I should have specified that's with my edge CTS 2 which subtracts 14.6psi atmospheric so it reports at psig and not psi. With auto enginuity hooked up it reads 14.6 to 14.7. I live at sea level. So mine was actually reading around 29psi by auto enginuity
all parts are Motorcraft...CPS, ICP, IPR, HPOP all new. New pigtails too. Ran great Friday when I drove it for two hours. Not so much now obviously. FML...pretty over this ruck right now.
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From: Las Cruces New Mexico
Don't give up Byron, is there a remote chance your E-fuel is the problem? Like a bad sensor or something cutting of the power to your fuel pump?
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Joined: Mar 2012
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From: Texas
UPDATE***
Alright Adam and Mike...and anyone else...it's running out of oil. Checked the res and it's empty...one inch on the bottom. I think this means I am ROYALLY screwed, right? As in LPOP?
Alright Adam and Mike...and anyone else...it's running out of oil. Checked the res and it's empty...one inch on the bottom. I think this means I am ROYALLY screwed, right? As in LPOP?
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From: Texas
Originally Posted by z31freakify
Its incredible, how I got a 6.doh memorized top to bottom but a 7.3 I forget, goes to show how unreliable those 6.doh's are when they are used in a company fleet.
Originally Posted by oldbird1965
Just saw this thread Byron. I concur, my EBP sensor was bad on the Mare and it didn't effect anything. Wish it was that easy seeing what you just said.
I Iva swine testing to do in the morning.
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From: Livoina,La
Another test is over fill the oil by two quarts and jack the azz end up a high as you can get it and pray you get the same results. This is one test you want it to fail cause if it runs then that means a cracked pickup tube.