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post #1 of 15 Old 11-14-2009, 12:48 PM Thread Starter
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Engine Light On

So I was driving to PetSmart and my dang engine light came on. So when I got to PetSmart I pulled out my SCT and found the code P2262. So I did a little reading and to make a long story short I found my MAP sensor hose had a huge crack down it. The crack didn't just happen over night, so I wonder why today it decided to throw a cell? Also what does this hose do? With by fixing it what actually gets fixed? I know MAP stands for Manifold Absolute Pressure, but what is it measuring?

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post #2 of 15 Old 11-14-2009, 02:09 PM Thread Starter
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No one knows what a MAP sensor does?

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post #3 of 15 Old 11-15-2009, 03:25 AM Thread Starter
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Here's the crack. Notice it was right at the base.


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post #4 of 15 Old 11-15-2009, 10:28 AM Thread Starter
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Going once, going twice, anyone???

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post #5 of 15 Old 11-15-2009, 10:56 AM
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I don't know what the MAP sensor does but I know that is where I Teed in my boost gauge.

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post #6 of 15 Old 11-15-2009, 10:59 AM
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The MAP sensor is a variable capacitor sensor that is supplied a 5-volt reference signal by the PCM and returns a voltage signal to the PCM relative to the intake manifold pressure. The sensor voltage increases as the pressure increases. The MAP sensor allows the PCM to determine the engine boost to calculate fuel quantity. In addition, the MAP signal is used to control smoke by limiting fuel quantity during acceleration until a specified boost pressure is obtained, and is used by the PCM for EGR system calculations and control. A MAP signal fault detected by the PCM causes the PCM to calculate an estimated manifold pressure based on known engine conditions.

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post #7 of 15 Old 11-15-2009, 11:15 AM
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Quote:
Originally Posted by bismic View Post
The MAP sensor is a variable capacitor sensor that is supplied a 5-volt reference signal by the PCM and returns a voltage signal to the PCM relative to the intake manifold pressure. The sensor voltage increases as the pressure increases. The MAP sensor allows the PCM to determine the engine boost to calculate fuel quantity. In addition, the MAP signal is used to control smoke by limiting fuel quantity during acceleration until a specified boost pressure is obtained, and is used by the PCM for EGR system calculations and control. A MAP signal fault detected by the PCM causes the PCM to calculate an estimated manifold pressure based on known engine conditions.

yep that about sums it up

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post #8 of 15 Old 11-15-2009, 11:53 AM
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Doesn't look like sensor is bad, just a cracked hose. Easy fix.

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post #9 of 15 Old 11-15-2009, 12:47 PM Thread Starter
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Quote:
Originally Posted by bismic View Post
The MAP sensor is a variable capacitor sensor that is supplied a 5-volt reference signal by the PCM and returns a voltage signal to the PCM relative to the intake manifold pressure. The sensor voltage increases as the pressure increases. The MAP sensor allows the PCM to determine the engine boost to calculate fuel quantity. In addition, the MAP signal is used to control smoke by limiting fuel quantity during acceleration until a specified boost pressure is obtained, and is used by the PCM for EGR system calculations and control. A MAP signal fault detected by the PCM causes the PCM to calculate an estimated manifold pressure based on known engine conditions.
Awesome, thanks! Could this be the reason why the code P2262 was thrown?

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SOLD - 2004 Lariat F-250 4x4
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post #10 of 15 Old 11-15-2009, 02:36 PM Thread Starter
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Hey by fixing this do you think my mpg will go up? I know after just going down the road it seemed to run a little better. Seemed to spoil up a little smoother.

2012 F-350 SRW King Ranch
SOLD - 2004 Lariat F-250 4x4
6.5 Pro Comp Lift W/ Fox Shocks, DeeZee Tool Box, 08 Diff. Cover, 37x13.5/20's Pro Comps, Zoodad Mod, SCT w/custom tunes, 4 in EX., AFE Intake, ARP, Recon Lights, High Idle Mod, RCD EGR Delete, Fumoto Valve, Oil Bypass Kit, 03 Turbo, Yukon Gears, Farmboy Stage II Traction Bars, Dieselsite Coolant Kit, Amsoil, HIDS, Edge Insight CS, PHP FICM
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