Tannon Jeffries

01 2500
So there’s white smoke coming from the vent hose, not a lot just a noticeable amount, a little lighter than cigarette smoke. Was wonder if it’s normal or not. If not, what may be the problem? Maybe need to replace the hose? Drives and runs fun. Any suggestions?

jrs_dodge_diesel

Where is the hose located, factory location or was it extended?

It is normal for some vapors to come out of there.

Tannon Jeffries

It extends down towards the t case. Just found out the ac isn't working anymore. I'm going to assume that there's a correlation between the two.

jrs_dodge_diesel

There isn't. The only thing those two share is that the engine spins the compressor, that's it. What comes out of the blowby tube is crankcase gasses, nothing more. Measuring the gas flow properly with a manometer can give you a good check of the health of your piston rings and cylinders. The one thing that can give false blowby indications is a vacuum leak or a leaking vacuum pump due to the design of that system.

There's a garden variety of things that can cause the A/C to be out. Low refrigerant (or no refrigerant) due to a leak, blown compressor fuse, bad relay, bad low pressure switch, shorted out compressor clutch, etc.

Tannon Jeffries

Thank you. I’m gonna try to get elbow deep in research and in the engine bay. Hopefully it’s nothing serious.

AlpineRAM

Does your selector for the vents work?
If 4WD does 4WD work- If automatic does the cruise work?

If none of the above work you seem to have a vacuum leak, this can lead to increased levels of crankcase vent output.

KATOOM

As Alpine pointed out, if the AC vent selection is what you're describing as "AC not working" then the problem is a vacuum leak and the extra vacuum pump air dumps into the crankcase.

Tannon Jeffries

The selector and 4WD do not worK, but cruise control does.

Tannon Jeffries

Is it bad to drive with a vacuum leak? It’s my daily driver.

AlpineRAM

Do you have a manual transmission?

Nevertheless, it's a bad idea to drive like that- your vacuum pump will ingest dirt, get chewed up and spit the results of said abuse into the crankcase. Especially bad if you have the hose lose at the firewall and hanging down while going through puddles.
Take a look at your power steering pump, right in front of it is the vacuum pump- one hose should come out of it and go towards the firewall. If you find a hose hanging there and one vac pump without hose you may have found your problem

Tannon Jeffries

It’s automatic. I’ll be sure to look today and update on what I find with pictures if I can’t figure it out.

AlpineRAM

Please give feedback even if it works.
A lot of positive knowledge is generated by reporting back what worked for you.

Tannon Jeffries

Sure will

Tannon Jeffries

May have found the issue. Looks like someone cut it.

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Tannon Jeffries

It actually wasn’t cut. Just dried out and brittle. Felt like hard plastic.