2000 Jeep Grand Cherokee Repair Question
Mileage: 150,000 miles.
Vacuum leak
On the diagram under the hood, it shows there being a vacuum port that isn't used, and i do believe that this is the port that im talking about.
Asked by danny9273Answer
Is that a steel line? If so, chances are it isn't a vacuum hose. Can you feel any vacuum at it?
Yes, it is a steel fitting. It's one of those fittings with like three ridges on it to hold a rubber hose on. There is vacuum on it when I put my finger over it.
Plug it with a cap. See if the problem stops. It should.
Thats what I was thinking, seeing as how i couldnt find a hose hanging around. But with this uncapped as it is, when my car is stopped at a stop sign, it seems to act like it wants to die. But it never does.
That is what vacuum leaks do. They lower the intake vacuum; thus, the engine doesn't get the correct amounts of air / fuel. I feel confident once it is plugged, you will see an improvement. Especially if it is a large leak.