The wife had my 2015 jeep cherokee north in for an oil change today at the local dodge dealership. During service they pulled air box and checked air filter but in the process they broke the fitting off the airbox that the vacuum line is attached to. And tried unsuccessfully glueing fitting back onto airbox. Glue didn't work so they have a couple zip ties holding fitting on, and they cant get a new airbox for approximately a week. My question is. What is this vacuum line for and what damage can occur if dust gets sucked into it. We drive on alot of gravel roads so avoiding dust is not an option. Thanks for any help.
Dave, if you're at all worried about it, I would take a picture of what the dealer did, and attached it to your work order from the dealer...just in case something comes up in the future.
I just did my air filter a few weeks and can picture the line. I agree with @Len1304 that's the PCV line where it flows back to the filter. Nothing will flow into your engine if that's your concern. They should've replaced the clips/fitting, or had you come back if they needed to order them. If Jeep sends you a survey about the service, I would definitely note that in there.
The wife had my 2015 jeep cherokee north in for an oil change today at the local dodge dealership. During service they pulled air box and checked air filter but in the process they broke the fitting off the airbox that the vacuum line is attached to. And tried unsuccessfully glueing fitting back onto airbox. Glue didn't work so they have a couple zip ties holding fitting on, and they cant get a new airbox for approximately a week. My question is. What is this vacuum line for and what damage can occur if dust gets sucked into it. We drive on alot of gravel roads so avoiding dust is not an option. Thanks for any help.
Can't add much more than what's already been said, but the dealership did the same to mine. Noticed it about a month after a dealer oil change/inspection when checking oil at a gas station. No one else was under the hood in the interval. What I didn't like was the person that broke the nipple off didn't report it. Then the dealership tried to pin it on the out-of-state dealership that had done the prior oil change.
I live off a dirt road and, even so, all indications are the engine is fine and does not burn oil. So I'm guessing you're good.
Here's something on the PCV system in the KL's engine:
"The main purpose of the Positive Crankcase Ventilation (PCV) valve is to recirculate blow-by gases
back from the crankcase area through the engine to consume unburned hydrocarbons. The PCV
system usually has a one way check valve and a make up air source. The system uses rubber hoses
that route crankcase blow by gases to the intake manifold. Vacuum within the engine intake manifold
pulls the blow by gases out of the crankcase into the combustion chamber along with the regular
intake air and fuel mixture.
The PCV system can become clogged with sludge and varnish deposits and trap blow by gases in the
crankcase. This degrades the oil, promoting additional formation of deposit material. If left
uncorrected, the result is plugged oil rings, oil consumption, rapid ring wear due to sludge buildup,
ruptured gaskets and seals due to crankcase pressurization."
So the unattached hose goes to the PCV valve where the engine-created vacuum should be sucking fumes from the crankcase into the air cleaner box to be burned during engine combustion, but it's not. However, the hole in the air cleaner box is letting unfiltered air into the engine intake. I would think it would be a good idea to put a piece of duct tape over that hole until the upper air cleaner box is replaced.
It looks like I'm joining the club, I just broke the fitting on the air box. I was going to replace the air box until I found out it cost $150!!
I have read this thread and felt better about it that it is not going to produce an error code. I decided to take another look at it so took it apart again. as can be seen by photo I think I have solved the problem and it "operates as intended". the following are the steps that I took. removed the two plastic pieces, one that broke off air box and the piece that is in the rubber PCV tube and throw away.
1. remove the two plastic pieces, one that broke off air box and the one in the PCV rubber hose and throw away.
2. measure distance from air box to PCV hose, s/b about 3 inches.
3. loosen clap that holds output air tube and remove from air box.
4. loosen 5 screws that hold top of air box and remove.
5. I used a piece of sprinkler 1/2 inch drip line tubing. I cut mine about 4 inches. one end goes into the PCV hose, it fits snug.
6. on the air box, I drilled out the hole where the piece broke off. I used a 9/16 bit. the 1/2 inch line fit snug. be sure not to push to far in, maybe 1/2 inch.
7. now just put air box back on and tighten screws, attach air outlet tube and then attach 1/2 drip line. I put it in the PCV hose 1st and then into air box. might want to mark 1/2 inch mark on tube going into air box.
the next time you change air filter you won't have to worry about breaking that plastic thingy.....
If you just need the clip this one fits perfectly. I broke mine when I changed my air filter. Had this clip lying around and found out it was a perfect fit. Should be able to find it at any auto store. Sorry can’t remember how much it was.
Fantastic, thanks for sharing! Been trying to find a replacement clip as mine broke, and the dealership said they could only sell the entire air hose assembly. Found a pair at autozone for about $9. Better than the $45 the dealer wanted to charge for the whole assembly, haha.
Definitely will not give a cylinder misfire code.
Tell us about your Jeep. Especially mileage.
Check engine codes you have?
Do you actually have a problem or is this just a rhetorical question?
Definitely will not give a cylinder misfire code. Tell us about your Jeep. Especially mileage. Check engine codes you have? Do you actually have a problem or is this just a rhetorical question?
2015 jeep cherokee 3.2 114k just replaced the dreaded oil filter housing with a all metal one after install I had to tear it back down as I discovered quickly one of the injectors wasn't seated after that was done and no fuel was leaking I buttoned it up everything was running fine. I got a code this morning for cylinder misfire. Well I discovered my battery terminal was lose and will not tighten so I cleared the code and have drove it all day no issues. Its also noted that when I got the code the car wasn't idling rough no change in the running of the car. Its definitely a long way from my old 97 xj that I still drive with 350k on her
Thanks for the update.
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Hey just tried changing my engine air filter for the first time. The plastic connecting to the filter cap broke off. So I took a pic after the fact, did a shotty taping job. Also the case is being held down by only 3 screws out of 5. I lost 1 and it fell down, didn't see it Hit the ground...
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