Excessive black exhaust

[dsberman94]

I believe I found the harness plug for the BARO sensor under the steering column but the sensor is MIA if I'm looking at the right plug. Is it a 4 pin round plug with 3 wires.

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You sure that's not the wire for the trailer brake controller. Kinda sounds like that's what you're looking at.

 

[heavydoc]

I'm not sure gonna hook up to the wife's excursion and then my obs, and all again with my ethos to compare and maybe swap from the excursion.

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[psduser1]

Pretty sure in 02, the baron sensor is mounted on the header panel, in front of the intercooler.

 

[Dmstrucks02]

Pretty sure in 02, the baron sensor is mounted on the header panel, in front of the intercooler.

Is that the same one that is the exterior temp sensor?

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[heavydoc]

Is that the same one that is the exterior temp sensor?

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I think that is ambient air temp

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[Dmstrucks02]

I think that is ambient air temp

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Yea I wasn't sure if it did double duty

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[heavydoc]

It could I'm not sure

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[DEEZUZ]

02 model year it is contained in the PCM

 

[DEEZUZ]

But this says if any fault occurs, it will default to 14.5psi.

With your scan tool reading the voltage too, I almost think it's shorted to ref voltage. Probably internally to the pcm

 

[heavydoc]

That's what I'm hoping not for.

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[heavydoc]

Barometric reads 148 psi on my excursion also, but reads 27 "hg, 81 hz and 4.26 v with my ethos on both my trucks. I think 148 is a programming error on ae part.

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[heavydoc]

I built a boost pressure tester over the weekend, blocked off the CCV and boost line going to the MAP sensor. Pressurized the system slowly and at 25 psi blew a hole in the intake boot right at the turbo :cursing:. Ordered a new one from Riff Raff, didnt hear any leaks yet, but also was unable to test with soapy water.

 

[DEEZUZ]

If you have to go hunting for a boost 'leak' with soapy water, then it isn't the issue.

 

[heavydoc]

Ya it was one of those things will I was there just to check .

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[heavydoc]

Well I removed both exhaust manifolds, cleaned and installed with metal gaskets, using new bolts and anti-seize. All the bolts came out pretty easy except for the 5th bolt back on both sides, those were a bear and ended up cutting the bolt and beating it out of the manifold. Took it on a test drive and truck sounded much better, the smoking was about 75% better. Took it on another drive today and smoking is almost all gone.

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