Cold Weather Problem
Senior User
Joined: Mar 2006
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From: Sedro-Woolley, Washington
ICP is located on the left head of the engine forward. It looks like a spinning top with a connection on top. It is easy to change, I believe it is a 5/8 but not for sure. Hope this helps. Run a 'ICP" search and I do believe that there are pictures of it some where!
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Freshman User
Joined: Feb 2007
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I got the ICP done this afternoon and that sensor is the hardest one to get to because of the doghouse on the Econolines. Got about an hour before I have to leave for work so tomorrow I'll get the exhaust back pressure sensor done and take it out for a spin.
Will let you know how it does.
Will let you know how it does.
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Freshman User
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Changed out the back pressure sensor and the ICP and took it out for a spin. Problem is still there although its changed its tune a bit.
I can drive about 3-5 miles before it starts losing power. If I push it, the engine will begin blowing bluish white smoke likes its burning oil. When I pulled the back pressure sensor it was partially clogged and I'm not sure if there's a connection.
If I shut it down and let it sit a few minutes it will start up and run roughly. The 3-5 miles I'm talking about are uphill, but driving it home (downhill) it ran poorly but didn't blow smoke or leave me on the side of the road.
Checked the oil level and its right on (had it changed at dealer a few weeks back) Antifreeze is clean...no sign of oil in it.
At this pint I'm back where I started. No codes, No SES light when it messes up (I even pushed it till it stalled just to see if the SES light would come on and got nothing)
Anybody got any ideas whats going on?
I can drive about 3-5 miles before it starts losing power. If I push it, the engine will begin blowing bluish white smoke likes its burning oil. When I pulled the back pressure sensor it was partially clogged and I'm not sure if there's a connection.
If I shut it down and let it sit a few minutes it will start up and run roughly. The 3-5 miles I'm talking about are uphill, but driving it home (downhill) it ran poorly but didn't blow smoke or leave me on the side of the road.
Checked the oil level and its right on (had it changed at dealer a few weeks back) Antifreeze is clean...no sign of oil in it.
At this pint I'm back where I started. No codes, No SES light when it messes up (I even pushed it till it stalled just to see if the SES light would come on and got nothing)
Anybody got any ideas whats going on?
Post Fiend
Joined: Jun 2006
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From: Central, Al
Mercx Two codes that stick out to me from your earlier post are the IAT and EOT. With those two malfuctioning the Exhaust backpressure valve could be closing and not opening when it should. Also the Exhaust backpressure sensor tube if still clogged could prevent the PCM from seeing the correct pressure and not determine the "Load on the motor
The EBPV is commanded by the PCM when EOT <167*F and IAT <45*F under low load low speed operation. From what I have experienced 55 and under seems to be fords definition of low speed.
The EBPV is commanded by the PCM when EOT <167*F and IAT <45*F under low load low speed operation. From what I have experienced 55 and under seems to be fords definition of low speed.
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Originally Posted by amiller93
Mercx Two codes that stick out to me from your earlier post are the IAT and EOT. With those two malfuctioning the Exhaust backpressure valve could be closing and not opening when it should. Also the Exhaust backpressure sensor tube if still clogged could prevent the PCM from seeing the correct pressure and not determine the "Load on the motor
The EBPV is commanded by the PCM when EOT <167*F and IAT <45*F under low load low speed operation. From what I have experienced 55 and under seems to be fords definition of low speed.
The EBPV is commanded by the PCM when EOT <167*F and IAT <45*F under low load low speed operation. From what I have experienced 55 and under seems to be fords definition of low speed.
Tomorrow, I'll pull the exhaust back pressure sensor again and check the tube.
I'm not sure though what to make of the EOT though. When I drove it the garage I needed to take advantage of the engine being cold, so I didn't really give it time to warm up before I hit the road, so I assumed that was what generated that code. Bt from what your suggesting, it sounds more like the oil is running too hot?
Thanks for the help so far guys
Last edited by Mercx; Mar 10, 2007 at 08:31 PM.
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Post Fiend
Joined: Jun 2006
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From: Central, Al
If the EOT is not sending the correct temp to the PCM it can command the EBPV even when the truck/van is fully warmed up. So its not the oil is too hot its just the PCM may see it as being to cold.
Why did you have to unplug the IAT to change the fuel filter its in the intake under the air filter????
Why did you have to unplug the IAT to change the fuel filter its in the intake under the air filter????
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Originally Posted by amiller93
If the EOT is not sending the correct temp to the PCM it can command the EBPV even when the truck/van is fully warmed up. So its not the oil is too hot its just the PCM may see it as being to cold.
Why did you have to unplug the IAT to change the fuel filter its in the intake under the air filter????
Why did you have to unplug the IAT to change the fuel filter its in the intake under the air filter????
Maybe I'm missing something but I thought if the OBD detected a malfunction in the EOP the warning lamp would stay on for as long as the fault exists. (AT lest that what the manuel says) Since there was no warning lights or SES lite I figured it was nothing to worry about.
But I'll check into picking up an EOT sensor on Monday. I hate doing things this way but I don't have the time to go at it with a voltmeter. (not to mention my batteries leaked in my voltmeter and I still gotta fix that)
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Yeah, its a good thing you mentioned to check that line. I pulled the sensor shined a flashlight down there and sure enough thay thing is packed solid with an oily soot.
So I'll see what I can do to get it cleaned out.
So I'll see what I can do to get it cleaned out.
Post Fiend
Joined: Jun 2006
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From: Central, Al
After removing it from the truck spray it down with the breaklean and let it soak a bit. The run the weedeater line through and work it back and forth. Repeating this 3 -4 times should get it. Also check the tube for pinholes and cracks.