Where is the MAP Sensor

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Feb 28, 2010 | 06:23 PM

Pilot-Pj

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Where is the MAP Sensor

I've replaced the EGR Cooler with a bulletproof, new oil cooler and screen, flushed the Coolant system, added the coolant filter, Rerouted the CCV.

It runs great with no hesitation or white smoke, but.... No Boost! (or much power)

I plugged intake at the turbo and pressureized the manifold at the MAP sensor. I leak about .5 psi per second. Which isn't air tight but couldn't account for 0 boost.

I've cleaned the EP tube, and I would like to clean or replace the MAP hose only I can't find where it goes... Where is the MAP Sensor?

If that doesn't clear it up I'll clean the turbo...

Feb 28, 2010 | 06:40 PM

Pilot-Pj

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More info.

When I hook up a gauge to the where the MAP hose should go I can make 7 psi in neutral at 2500 RPM (I get 0 with the MAP hose hooked up). When I apply 20 psi to the MAP hose I get no reading on the instrument panel (with the truck running in neutral).

Feb 28, 2010 | 06:56 PM

william_04_x

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The MAP Sensor is mounted to a bracket next to your oil filler neck. The nipple for the tube points down.

The other end of the tube goes to the intake nipple right next to the turbo compressor outlet. This one points straight up.

Feb 28, 2010 | 07:22 PM

Pilot-Pj

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LOL! I've been chasing a little gray vacuum hose looking tube.

I guess I tucked the MAP tube out of the way. Out of sight out of mind.

Well re-torque the intake manifold and pressure testing the whole thing didn't hurt anything...3 hours chasing no boost to a hose mix up! LOL
How’s that saying go. Experience is what you get when you didn’t get what you wanted…I’ll never forget what that hose looks like again (at least until next time).
Thanks William, you’ve saved what little hair I have left. BTW, Great Pics got me there in 2 seconds

Feb 28, 2010 | 07:30 PM

william_04_x

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No problem. Hope you get your boost back..

Feb 28, 2010 | 07:37 PM

bismic

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william_04_x,

I can't rep you for this help yet, but I won't forget!!

Feb 28, 2010 | 07:43 PM

william_04_x

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We have a habit of staying square with the rep Mark. Thanks.

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Feb 28, 2010 | 08:19 PM

Pilot-Pj

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Sorry I just noticed the little gray hose in your picture. What is that suppose to be plugged into in the engine bay? Now that mine's not hooked into the Intake manifold it’s kinda hanging there.

Feb 28, 2010 | 08:25 PM

#10

william_04_x

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Look just to the right of the MAP sensor for a vacuum valve/diaphragm on a heater hose. It should plug into that. Nipple in the center of the housing, pointing forward.