Exhaust Valve Question

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Jan 31, 2008 | 09:47 PM

skyrider4000

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From: Mitchell, Indiana

Exhaust Valve Question

I have a stock 99' PSD. My truck is lacking in power. And I believe it's mainly due to the Exhaust Backpressure. I unplugged the sensor and that helped dramatically, but did not fix it. I think that the valve that the sensor controls is getting stuck.

My question is... Where exactly is the valve and the servo that controls the Exhaust Backpressure? And how do I inspect it? If it does appear that it is getting stuck and causing extra backpressure, what is the correct way to repair it? Thanks

Jan 31, 2008 | 09:54 PM

aocabrown

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Joined: Jul 2005

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From: Memphis, TN

See post #8 in this thread.

https://www.ford-trucks.com/forums/7...ble-noise.html

Jan 31, 2008 | 10:02 PM

skyrider4000

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From: Mitchell, Indiana

Thanks for the picture. I'm sure I can locate that. But I still need feedback on exactly what to look for to tell if it's getting stuck, and what to do to fix it. Thanks

Feb 1, 2008 | 02:27 PM

skyrider4000

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From: Mitchell, Indiana

Hello, can anyone answer my last question in the last post? I still need feedback on exactly what to look for to tell if the valve is getting stuck, and what to do to fix it. Thanks

Feb 1, 2008 | 08:33 PM

skyrider4000

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From: Mitchell, Indiana

Does anyone know how to answer this question? Need help! Thanks.

Feb 1, 2008 | 10:12 PM

Orezona

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The white plug on the front of the pedestal is where it gets the signal to work
http://good-times.webshots.com/photo...94070327hAlUQR

The outlet on the right is the OEM outlet with the valve. http://good-times.webshots.com/photo...94070327LjWrBR See the arm at the bottom of the outlet. It connect to the actuator rod on the EBPV pedestal http://good-times.webshots.com/photo...94070327nSGstg

Hope this helps.

Feb 1, 2008 | 10:14 PM

Mike Norwood

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Joined: Aug 2007

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From: South-Central Kentucky

Welcome aboard FTE. try this site
http://guzzle.rbmicro.com/ebps.html

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Feb 1, 2008 | 10:32 PM

bdrummonds

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From: Millbrook Alabama

The EBP sensor (on the front of the engine ) does not directly control the EBP Valve. to determine if the vavle is sticking ,start truck up first thing on a cold morning, and look under hood at the actuator arm, after a few seconds of idleing the PCM will command the valve to close, and the actuator arm will extend, the PSM will also command the engine to raise its RPM, and the Valve will cycle (it will sound like a jet plane at the exhaust pipe). the EBPvalves only function is to facilitate a faster warm up of a cold engine. the PCM takes readings from AIT1 (ambient air temp 1) AIT 2, EOT(engine oil temp), ECT(engine coolant temp), Baro, and EBP sensor, to determine when to close and open the valve.

If you have unplugged the EBP sensor(front of motor) and your truck is running better, then it is probably becuse your EBPtube (from pax exhaust maifold to sensor) either has a hole in it or it is clogged with soot. Look here for a tutorial on cleaning this tube, and sensor http://guzzle.rbmicro.com/ebps.html