Originally Posted by Fordtrucktexan

Btw, silly question, but I've been unable to find a mention of it in the service guide and can't seem to locate it visibly - but do these motors have an EGR valve?

Originally Posted by Rnlcomp

Clear the KAM if your scanner can, if not you can do so by disconnecting the battery for a minimum of 15 mins, turn the key to the run position to dissipate any stored voltage. That will reset and put the PCM into learning mode, recheck the throttle values afterward.

Also you have to check the manifold O-rings with the engine completely cold, once it warms up even just a little bit the plastic will swell enough to seal. Have had a few where I just had to take a leap of faith and replace them which in turn caused the code to not reset, the rings are cheap enough and not all that difficult to change.
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Originally Posted by Mudder Fudder

Don't let the 5.0 guys see this...it never happened

Originally Posted by Fordtrucktexan

How would you check the o-rings cold, smoke test?

Originally Posted by Rnlcomp

Yes they do, it's an all in 1 device. Couldn't see it on my 13 5.0 as I would have to get a ladder to climb over the fender to see in the back where it's likely at, (4" lift kit)




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Originally Posted by Fordtrucktexan

Where did you find this? I'm about to go blind looking at exploded diagrams and must have missed this. I did a general search for ESM in the WOrkshop tab and it didn't find anything.

Originally Posted by Rnlcomp

I have the 2013 Ford shop manual on cd. Got it from http://www.helminc.com/helm/Result.a...lected%5Fmedia=
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Originally Posted by Fordtrucktexan

Can you post the diagram showing where on the engine it is located? I'm rummaging through the online workshop guide and not finding anything.

Originally Posted by Rnlcomp

I'm beginning to believe our engine don't have one. I can't find it in the manual or at ford parts.com. I grabbed a step stool climbed over my engine and looked everywhere it would normally be and nada, I slid up under with a creeper to get an eyeball on the back of the motor, nada, even grabbed my borescope to look between the firewall and engine, nada.

If there is one, it's invisible or inside the engine LOL. Wouldn't be the first time Ford threw me a curveball.
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Originally Posted by Fordtrucktexan

I've been in touch with two of my buddy's locally who are very well versed in the Mustang (Coyote) 5.0 and they confirmed - no EGR. However, they are as lost as I am in this problem, they seem to think just changing o2 sensors will solve the problem.