Service engine soon
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Service engine soon
I have a 2000 F250 powerstroke with a 40 HP power chip and a Banks exhaust system. Engine has 94000 miles. While pulling my 5th wheel recently in the hills of Alabama the Service Engine Soon light came on and remained on for a short time. This continued for several hundred miles. I probably am grossed out on weight. Transmission temp was approximately 110 degrees. Any ideas what might be the problem?
Don
Don
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Joined: May 2001
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From: Cabot, Arkansas
The most common causes for an SES light under high load conditions are overboost, high exhaust backpressure, and ICP out of range.
An ICP code would have manifested itself pretty much as soon as you put the chip in it, so we can safely eliminate it from the list.
An overboost condition, while possible, dosen't seem too likely given the extremely mild nature of your chip.
That leaves us with exhaust backpressure. High load conditions create a lot more pressure in the exhaust than at any other time. Assuming you are not continuing to get the light may mean that the tube feeding the exhaust sensor is partially plugged, or that the sensor is sufficiently covered as to not be completely accurate.
Any time the SES light is set a code is stored in the computer. Most auto parts stores have the ability to pull the codes.
An ICP code would have manifested itself pretty much as soon as you put the chip in it, so we can safely eliminate it from the list.
An overboost condition, while possible, dosen't seem too likely given the extremely mild nature of your chip.
That leaves us with exhaust backpressure. High load conditions create a lot more pressure in the exhaust than at any other time. Assuming you are not continuing to get the light may mean that the tube feeding the exhaust sensor is partially plugged, or that the sensor is sufficiently covered as to not be completely accurate.
Any time the SES light is set a code is stored in the computer. Most auto parts stores have the ability to pull the codes.
Posting Guru
Joined: Feb 2004
Posts: 1,873
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From: Phx, AZ
Cookie,
Silly question. I did the same thing with my truck once while raceing a couple of rice burners. My light came on breifly went off about 5 minutes later. Could not find a trouble code with my predator. Just assumed that the Egt's got too hot for a second never a problem since. But no trouble codes came up on my predator. Is there another method in which the auto parts stores pull up codes? Could they get a trouble code that I would not?
Fire Rooster
Silly question. I did the same thing with my truck once while raceing a couple of rice burners. My light came on breifly went off about 5 minutes later. Could not find a trouble code with my predator. Just assumed that the Egt's got too hot for a second never a problem since. But no trouble codes came up on my predator. Is there another method in which the auto parts stores pull up codes? Could they get a trouble code that I would not?
Fire Rooster
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
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From: Cabot, Arkansas
EGT's can not set a code, nor trip the SES light.
The parts houses use the same scanners they have on the shelf for sale.
For what ever reason, there seems to be a lot of hit and miss with PSD's and scanners. Sometimes they work, sometimes not, but if the light came on a code was set....dosen't mean it's still there, but there was one.
The parts houses use the same scanners they have on the shelf for sale.
For what ever reason, there seems to be a lot of hit and miss with PSD's and scanners. Sometimes they work, sometimes not, but if the light came on a code was set....dosen't mean it's still there, but there was one.
New User
Joined: Mar 2004
Posts: 11
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From: KY
Me too.
I get a check engine on the road a lot. Every trip to louisville.
I carry a 5k load and am running about 85-90mph it comes on when I go over a long hill or pass someone. I assume that it is overboost degas mode kicking in..
This model of truck does not have EGT sensor (or does it, correct me if I am wrong) pressure code/sensor.
I even use the scanner going down the road, never leaves a code. I think snap on scanners(Real Deal) will pull the code in the code history catagory.
I will check this out next time I get to my friends shop.(he has a snap on scanner.)
I carry a 5k load and am running about 85-90mph it comes on when I go over a long hill or pass someone. I assume that it is overboost degas mode kicking in..
This model of truck does not have EGT sensor (or does it, correct me if I am wrong) pressure code/sensor.
I even use the scanner going down the road, never leaves a code. I think snap on scanners(Real Deal) will pull the code in the code history catagory.
I will check this out next time I get to my friends shop.(he has a snap on scanner.)
Posting Guru
Joined: Feb 2004
Posts: 1,873
Likes: 1
From: Phx, AZ
Cookie,
Thanks for the help. Yeah that was my next guess was the turbo boost getting to high. Any way I couldn't find a code so hopefully it wont show up somewhere else. Obviously this is just in case I for some reason need warranty work done.
Fire Rooster
Thanks for the help. Yeah that was my next guess was the turbo boost getting to high. Any way I couldn't find a code so hopefully it wont show up somewhere else. Obviously this is just in case I for some reason need warranty work done.
Fire Rooster
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
Originally Posted by ugly02f350
I get a check engine on the road a lot. Every trip to louisville.
I carry a 5k load and am running about 85-90mph it comes on when I go over a long hill or pass someone. I assume that it is overboost degas mode kicking in..
This model of truck does not have EGT sensor (or does it, correct me if I am wrong) pressure code/sensor.
I even use the scanner going down the road, never leaves a code. I think snap on scanners(Real Deal) will pull the code in the code history catagory.
I will check this out next time I get to my friends shop.(he has a snap on scanner.)
I carry a 5k load and am running about 85-90mph it comes on when I go over a long hill or pass someone. I assume that it is overboost degas mode kicking in..
This model of truck does not have EGT sensor (or does it, correct me if I am wrong) pressure code/sensor.
I even use the scanner going down the road, never leaves a code. I think snap on scanners(Real Deal) will pull the code in the code history catagory.
I will check this out next time I get to my friends shop.(he has a snap on scanner.)
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New User
Joined: Mar 2004
Posts: 11
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From: KY
No power
Well , speak of the devil, today on the normal trip to louisville the light came on and I lost most of my power. I barely could go 65mph unloaded. I stopped immediately and removed the resistor. Turned the truck off and still no power, Check engine light stays on, I am thinking the Injection pressure sensor went bad or a few injectors at once.
My scanner must suck, it still will not pull the code>
When I first turn the truck on it runs good for maybe 5 seconds then it sounds like the timing goes to **** and it runs very bad..
No smoke just runs very bad.
Any help to get my truck running right again would be appreciated.
My scanner must suck, it still will not pull the code>
When I first turn the truck on it runs good for maybe 5 seconds then it sounds like the timing goes to **** and it runs very bad..
No smoke just runs very bad.
Any help to get my truck running right again would be appreciated.
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Service Engine Soon
Thanks for all of the suggestions. My mechanic pulled a code 476 which indicates an exhaust back pressure control valve performance malfunction. He does not know if the Banks exhaust could be confusing things so he wants me to take it to a local Ford shop with an outstanding diesel dept.
All suggestion are welcome.
des
All suggestion are welcome.
des