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1987 - 1996 F150 & Larger F-Series Trucks
Koer code 18

1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Koer code 18

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Old

Apr 19, 2019 | 06:45 AM

#1

Terry Smith

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Koer code 18

so I ended up getting key on engine running code18 because my truck was misfiring after about an hour of driving guess it warms up and it'll start doing it but when it's cool it drives great and after it warms up it starts missing well somebody told me to pull the engine coolant temp or the EGR solenoid so I did one of the other I pulled the EGR solenoid because that was the last thing I installed now the truck doesn't do it what could be the problem the truck does not misfire at all if it does i can't feel it now and the truck runs a hundred times better can somebody please give me some insight on this . Would I need to adjust my timing or advance it or back it off because you would think with everything plugged in that it would run better but with the solenoid unplugged it runs great but when when it's all plugged in it runs bad I don't know if it's if the timing is to far advanced or whatever but I know the code 18 was there and it's not there now I don't understand what the problem could be can somebody please help me understand this mess please

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Old

Apr 19, 2019 | 07:05 AM

#2

rla2005

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Joined: Oct 2005

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From: Kentucky

Why did you start another thread for your KOER Code 18 issue?

https://www.ford-trucks.com/forums/1...code-18-a.html

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Old

Apr 19, 2019 | 09:17 AM

#3

Terry Smith

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Quote:

Originally Posted by rla2005

Why did you start another thread for your KOER Code 18 issue?

https://www.ford-trucks.com/forums/1...code-18-a.html

I went back on their and i could not find it so I thought it expired . That's why .

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Old

Apr 19, 2019 | 09:37 AM

#4

rla2005

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From: Kentucky

Now that you have the link to your original thread you can pick up where you left off.

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Old

Apr 19, 2019 | 11:04 AM

#5

Terry Smith

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this is what I got when I tried to open it up

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Old

Apr 19, 2019 | 11:19 AM

#6

rla2005

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From: Kentucky

Koer Code 18

Works fine for me on a PC and my cellphone:

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Old

Apr 19, 2019 | 01:01 PM

#7

sandymane

Lead Driver

Joined: Oct 2016

Posts: 6,185

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From: Houston/Sugar Land

https://www.ford-trucks.com/forums/1...code-18-a.html

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