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2002 Mercury Mountaineer Questions & Answers
My A/C compressor shuts off after an hour (sometimes longer) of driving on a hot day.
I would get it checked by another mechanic shop, I suggest a complete AC service with freon, oil and dye every 5 years... The oil keep the compressor lubricated.... Also, there is always a 10-15% tolerance level in freon amount to be filled in. Auto compressor shut off is a built in safety feature that kicks in when pressure is too high in the system..... If you are in OC,Socal, let me know
My A/C compressor shuts off after an hour (sometimes longer) of driving on a hot day.
Look under the car when it stops and after the engine is turned off, do you see a lot of water dripping under the car on the passenger side? If so the AC evaporator core is freezing up and the pressure switch is defective. If scenario this is not the case then you may have either a sticking compressor magnetic clutch relay or the magnetic clutch closing coil is shorted when it is hot.
Ignition switch change out. 2002 Mountaineer
There are different releases for some designs. Column cover needs to be removed on side of switch, phillips heads and some plastic snaps make it that complete cover has to be out of way. There is pin release usually on bottom of lock tumbler, some need paper clip to be pushed inside for key tumbler to be released. Some have small spring loaded button to be pressed externally.
The housing for switch to attach to column can be adjustable with slots that are important. Scratch position marks on column to allow for remount of new switch in same position. The timing (up or down) is dependent on how everything aligns with gearshift lockouts like starter working in Park or Neutral and showing proper gear. These adjustments are a pain and can be avoided by scratching a mark on the column before removing the old part. Some parts do not have the slotted style and fit in a fixed hole for the bolts to attach it.
Finally, be careful with the electric connectors so you do not break a tab.
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