An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert whose answer got voted for 20 times.
An expert who has answered 20 questions.
Re: positive ventilation crank case valve location
I have one of these cars too, also 3.5. I purchased with 34K and has used a quart of oil every 1000 miles since then. It has no leaks or smoke or any other signs of oil consumption. So much research, nobody knows why these engines do this, some have gone as far as contacting Chrysler just for them to say, " that's normal". But here is the diagram for the PCV:
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
INSTALLATION - UPPER INTAKE MANIFOLD 1)Clean and inspect gasket sealing surfaces. 2)Position new gasket. 3)Install the throttle body on the upper intake (if required). 4)Install upper intake manifold and hand start all attaching bolts. 5)Tighten bolts gradually starting in the center working outward until a torque of 12 Nm (105 inch lbs.) is obtained. 6)Install the front and rear intake manifold support brackets. 7)Install the oil level indicator and oil fill tube to intake manifold bolts (Fig. 155). 8)Install the EGR tube. 9)Connect vacuum lines to the following (Fig. 156): Positive Crankcase Ventilation (PCV) Valve EVAP Purge Solenoid Power Brake Booster 10)Install alternator support bracket (Fig. 156). 11)Connect electrical connectors to the following (Fig. 157): Manifold Tuning Valve (MTV) Exhaust Gas Recirculation (EGR) Throttle Position Sensor (TPS) Idle Air Control (IAC) Manifold Absolute Pressure (MAP) 12)Install the throttle and speed control cable bracket and retaining bolts. 13)Install throttle and speed control cables to bracket and throttle arm. 14)Install air cleaner housing and inlet hose. 15)Install the engine cover. 16)Connect negative battery cable.
You didn't mention the year of the car, but it sounds to me like a faulty PCV (positive crankcase ventilation) valve. They do tend to give out as a car ages and should be replaced periodically as part of normal maintenance. This valve is designed to ventilate oil vapor from the crankcase into the intake to be burned instead of being vented into the atmosphere. A small amount of oil in the hose running from the valve to the intake is normal, but if there is a significant quantity it could be a bad valve, or it could indicate an over-filled crankcase. In either case, remove the valve, spray some carb cleaner inside it and shake up & down until you hear the internals of the valve moving freely. Drain the cleaner and re-install. Sometimes this will do the trick. If the oil persists in collecting in the hose, replace the valve.
a 4.0L or 4.6L V-8 engine, the PCV valve is on the back of the engine.
Follow the black hose running to it just below the coil pack. On
Explorers with a 3.0 L V-6, the PCV valve is on top of the engine on the
right-hand side valve cover, installed in a rubber grommet with a black
rubber hose running to it.
You can find it by following the pipe from the intake maifold or surge tank back to the tappit cover, PCV stands for positive crank ventilation. The fumes from the engine are sucked into the intake for burning on all vehicles with emision control.
I think it is in the valve cover. see illustrations from shop manual.
Positive Crankcase Ventilation System
The Positive Crankcase Ventilation (PCV) System (Figure 132)cycles crankcase gases back through the engine where they are burned. The PCV valve regulates the amount of ventilating air and blow-by gas to the intake manifold and prevents backfire from traveling into the crankcase. The PCV valve should be mounted in a vertical position. On some applications, the PCV system is connected to the evaporative emission system (refer to the VECI decal). located on the underside of the hood or on the radiator cooling fan shroud.
crankcase ventilation tube
Remove the positive crankcase vent (PCV) hose from the clips.