14 lbs of boost at koeo position?

[hheynow]

My truck reads 14 lbs of boost at the koeo position. Could this be related to a bad MAP sensor or a failing PCM? The truck runs fine but this reading seems very high and wrong for the koeo position. Any ideas? Could it be related to me having my PCM reflashed from NAW6 to TDE1 by my Ford stealership?

 

[95_stroker]

Where are you reading this boost at Richard? I thought you didnt have guages?

 

[Crumm]

I am totally in the dark. What is koeo?

 

[Ford_Forgotton]

KOEO = Key ON Engine OFF. Its a PCM test mode.

At sea level, there is something like 14.7 lbs of static air pressure. The computer needs to know outside atmospheric pressure in order to calculate for HIGH ALTITUDE running. Now I thought the BARO sensor in the PCM took care of this, but then again, maybe what your reading is the BARO and not the MAP.

 

[hheynow]

I thought you didnt have guages?

Ahh grasshopper...good point! I mentioned to you at chat the other night that the exhaust leak wasn't fixed so I brought it back to International. A mechanic scanned it and came up with 14 lbs of boost at koeo, which as F_F said is sea level barometric pressure. His scanner was set wrong and instead of showing zero boost at koeo it showed 14 lbs. I posted this also at TDS and got some great replies from Nit & Richter69. And I did some research here.

Case closed...Question answered...

 

[Crumm]

Case closed...Question answered...

And I learned something too

KOEO = Key ON Engine OFF. Its a PCM test mode.

 

[BigRed CC dually]

Ahh grasshopper...good point! I mentioned to you at chat the other night that the exhaust leak wasn't fixed so I brought it back to International. A mechanic scanned it and came up with 14 lbs of boost at koeo, which as F_F said is sea level barometric pressure. His scanner was set wrong and instead of showing zero boost at koeo it showed 14 lbs. I posted this also at TDS and got some great replies from Nit & Richter69. And I did some research here.

Case closed...Question answered...

 

[95_stroker]

His scanner was set wrong and instead of showing zero boost at koeo it showed 14 lbs.

So what we had was a tech error and there is no existing problems...... Glad to hear that Richard. Now did they get your exhaust problems fixed?

 

[hheynow]

AND BIG RED CC DUALLY TOO!!!

 

[hheynow]

So what we had was a tech error and there is no existing problems...... Glad to hear that Richard. Now did they get your exhaust problems fixed?

Yup, tech error
Yup, exhaust leak fixed
Yup, MAP sensor functioning correctly
Nope, no scan codes set


...but now the Ranger is my daily driver and I'll drive the PSD on the weekends.