20 Most Recent 2007 Lincoln Aviator - Page 2 Questions & Answers

check the cv joints for wear. check rear drive shaft for worn slip joint splines and "u" joint wear. When you lock in awd there is no centre diff to allow the variations between the wheels and so you are experiencing a torque build up between the front and rear diffs . This put stress on the entire drive chain so any looseness or worn parts will display noises. Remember that the awd lock should be only used on surfaces that allow the tyres to slip and relieve the stress ( dirt road---snow---mud--ice )

My Sharan car gearbox when is cold, wont change

get out of the car with the keys in hand. lock all doors trunk etc. open car with key in door then reenter car retry starter

perhaps the body control module

Your engine fan is temp control, it will lock up when you are driving at a high speed, the clutch could be bad and also you have a electric coolant fan too..

Use standard 80-90 OEP diff oils in standard diff and special oil if diff is limited slip unit as oep oils will destroy a limited slip diff.

If this is still under the Warranty, back to the Dealer it goes. If you had to pay for an unneeded part, ask for compensation.The sparkplug and coil get a signal to fire from the PCM. If the signal is not getting to the #8 coil/plug, then you need to move upstream to the PCM. Something may be corroded in the connector for that single cylinder.The other test is the Noid test for injector firing. You might want to throw a new injector into the #8 spot and see if it helps. Finally, the rear cylinders,4 and 8, have been used to route exhaust gas to the EGR. This is an additional duty that may effect exhaust flow on that single cylinder.You did not state the year of your vehicle. For a time, a part called a "Cam Phaser" on 4.6L and 5.4L V-8 engines would cause timing issues inside the motor. Each side of the motor is independently timed, so you can have an issue on only one side of the motor. Perhaps with cylinder 8, a combination of events is causing your problem and when both the EGR flow demands from cylinder 8 and improper timing from a bad "Cam Phaser" causes a misfire. The "Lean Code" which has not appeared is an average of all 4 cylinders on one bank. Since you are not dumping "Raw, unburned fuel" from cylinder 8, we can assume that cylinder 8 is running lean and may not even be getting fuel.

Try checking the fluid level in the transmission.

Sounds like the ACC fuse is blown. Look for it in the fuse block