Brown coolant
#46
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Year: 1999
Model: Cherokee
Engine: 4.0
What came out.... Done with the flush I flushed the hell out of it. Anyway I'm going to do a tune up tomorrow. I got distributor cap total spark plugs and wires an air filter and the guy at the auto place asked if I needed a Pcv valve or something like that ? He said a lot of times ppl replace it when changjng the air filter so I bought one for my jeep but idk where it is ... Anybody know ? It's a 99
#47
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take it back, you don't have one. jeeps use ccv instead, there is no valve.
#48
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Year: 1999
Model: Cherokee
Engine: 4.0
Really? So why would they have even looked it up and found one compatible ? And what is the thing the hose from the air box attaches too? Sorry just learning everyday I've never been very mechanical lol.
#51
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#52
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Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Here's some drivel. The rear CCV orifice is 2.6 mm. It includes a valve that does two things. One is if vacuum is extreme, it closes off, also during a backfire it closes off. The idea is, it's a built in, metered vacuum leak, to provide circulation through the crankcase. You want that working! It could change the balance of positive/negative crankcase pressure. Positive crankcase pressure will look like a failed rear main seal.
All that said, all my "new to me" 90 has, is an elbow there with an orifice that looks to my eye to be about 2.6mm. So there's that. It has no metal, or valve, or anything. Just a hole.
All that said, all my "new to me" 90 has, is an elbow there with an orifice that looks to my eye to be about 2.6mm. So there's that. It has no metal, or valve, or anything. Just a hole.
Last edited by DFlintstone; 01-17-2015 at 12:35 AM.
#53
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Year: 1990
Model: Cherokee
Engine: 4.0
Here's some drivel. The rear CCV orifice is 2.6 mm. It includes a valve that does two things. One is if vacuum is extreme, it closes off, also during a backfire it closes off. The idea is, it's a built in, metered vacuum leak, to provide circulation through the crankcase. You want that working! It could change the balance of positive/negative crankcase pressure. Positive crankcase pressure will look like a failed rear main seal.
All that said, all my "new to me" 90 has, is an elbow there with an orifice that looks to my eye to be about 2.6mm. So there's that.
All that said, all my "new to me" 90 has, is an elbow there with an orifice that looks to my eye to be about 2.6mm. So there's that.
#54
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Year: 1999
Model: Cherokee
Engine: 4.0
Here's some drivel. The rear CCV orifice is 2.6 mm. It includes a valve that does two things. One is if vacuum is extreme, it closes off, also during a backfire it closes off. The idea is, it's a built in, metered vacuum leak, to provide circulation through the crankcase. You want that working! It could change the balance of positive/negative crankcase pressure. Positive crankcase pressure will look like a failed rear main seal. All that said, all my "new to me" 90 has, is an elbow there with an orifice that looks to my eye to be about 2.6mm. So there's that. It has no metal, or valve, or anything. Just a hole.
#55
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Year: 1991
Model: Cherokee
Engine: 1999 4.0L
That's the right part and the right thing to do. Its plugged into a large grommet so don't get too aggressive. If you have some large vice grips or channel-lock pliers you can grab the top and pull it straight up
#56
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Year: 1999
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Also I found the coolant leak!
Water pump gasket maybe ?
#59
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Year: 88
Engine: 4.0
One word of caution be gentle those plastic rubber lines break fairly easy. But are easily replaceable. Get the grommet for it will make it a lot easier to install, as the old one is probably harden up and will break or crack.
#60
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Year: 1994
Model: Cherokee
Engine: 4.0
The guy at Oreilly's should have sold you a new grommet also. Getting the new valve in that grommet may destroy it. The grommet is in the HELP ! section, and is Part No 42344...