Can a bad Exhaust Back Pressure sensor cause no boost and there fore no power?
#31
#32
Eliminate codes?
Any help would be great!!... Having a transmission down shift problem and was told to get rid of ALL CODES first since the trans is totally controlled by them.
#33
I'm not sure if this is the problem with my 7.3.
It's been cutting out for a second or 2. Check engine light. Water in fuel light come on. Buy they don't stay on.
I've replaced my cps with a gray one. It didn't stop. Cleaned ebps sensor and tube. Still does it.
Usually when this happens it's at Idol or when I let off the throttle, but last night on my way home up a hill as I was accelerating this happened again ; the truck cut out, kind of jarred, and then my turbo wouldn't boost at all, White smoke was everywhere and no power. The first thing I thought was that my turbo it out. But I turned off the truck waited for a minute and then tried starting it again and it ran fine all the way home.
My ICP sensor is oily. So I believe that needs replace. I just replaced my EBPS sensor this morning in hopes that maybe I damaged the old one while cleaning.
The only thing I can think of is the ICP bad or the replacement CPS is still faulty
It's been cutting out for a second or 2. Check engine light. Water in fuel light come on. Buy they don't stay on.
I've replaced my cps with a gray one. It didn't stop. Cleaned ebps sensor and tube. Still does it.
Usually when this happens it's at Idol or when I let off the throttle, but last night on my way home up a hill as I was accelerating this happened again ; the truck cut out, kind of jarred, and then my turbo wouldn't boost at all, White smoke was everywhere and no power. The first thing I thought was that my turbo it out. But I turned off the truck waited for a minute and then tried starting it again and it ran fine all the way home.
My ICP sensor is oily. So I believe that needs replace. I just replaced my EBPS sensor this morning in hopes that maybe I damaged the old one while cleaning.
The only thing I can think of is the ICP bad or the replacement CPS is still faulty
#34
I'm not sure if this is the problem with my 7.3.
It's been cutting out for a second or 2. Check engine light. Water in fuel light come on. Buy they don't stay on.
I've replaced my cps with a gray one. It didn't stop. Cleaned ebps sensor and tube. Still does it.
Usually when this happens it's at Idol or when I let off the throttle, but last night on my way home up a hill as I was accelerating this happened again ; the truck cut out, kind of jarred, and then my turbo wouldn't boost at all, White smoke was everywhere and no power. The first thing I thought was that my turbo it out. But I turned off the truck waited for a minute and then tried starting it again and it ran fine all the way home.
My ICP sensor is oily. So I believe that needs replace. I just replaced my EBPS sensor this morning in hopes that maybe I damaged the old one while cleaning.
The only thing I can think of is the ICP bad or the replacement CPS is still faulty
It's been cutting out for a second or 2. Check engine light. Water in fuel light come on. Buy they don't stay on.
I've replaced my cps with a gray one. It didn't stop. Cleaned ebps sensor and tube. Still does it.
Usually when this happens it's at Idol or when I let off the throttle, but last night on my way home up a hill as I was accelerating this happened again ; the truck cut out, kind of jarred, and then my turbo wouldn't boost at all, White smoke was everywhere and no power. The first thing I thought was that my turbo it out. But I turned off the truck waited for a minute and then tried starting it again and it ran fine all the way home.
My ICP sensor is oily. So I believe that needs replace. I just replaced my EBPS sensor this morning in hopes that maybe I damaged the old one while cleaning.
The only thing I can think of is the ICP bad or the replacement CPS is still faulty
#35
#36
#40
Just pulled my whole turbo for a EBP code
#41
The plug on the pedestal is the controller for the backpressure valve - to assist w/ warmups (not a sensor). It blocks off the exhaust when cold to help build heat in the system. Separate system. It opens when the engine warms up. Before the engine warms up the truck (or bus in your case) is kind of a turd..
The other end of the tube you're referring to connects to the exhaust manifold. The tube is just there to bring that exhaust pressure elsewhere rather than subjecting the sensor to the heat back there.
You probably should start a new troubleshooting thread rather than necromancing this old one.
The other end of the tube you're referring to connects to the exhaust manifold. The tube is just there to bring that exhaust pressure elsewhere rather than subjecting the sensor to the heat back there.
You probably should start a new troubleshooting thread rather than necromancing this old one.
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75hiboybeast
1973 - 1979 F-100 & Larger F-Series Trucks
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08-13-2013 02:52 PM