Help – PTU vent due to over leak
In February 2014 in my 2011 Ford Flex Titanium, I smelled oil after a road trip from MO to PA and back. I went my Ford dealer to because of the smell of burning oil entering in the passenger compartment. The determination was that my crankshaft seal had failed and required replacement. The service was done under my Ford ESP warranty and I went on my way. Within 60 days I still smelled burning oil and took it back in to my Ford dealer again. They advised that my seal was bad/defective and required a replacement again. I had the replacement done again and went on my way. Within a couple of months, and another 1200 mi. weekend trip to elderly in-laws, I smelled the burning oil odor similar to previous oil smell but slightly more pronounced. The odor was most pronounced after driving on the highway and when at idle in traffic or at a stop while the ventilation was on. At a follow up oil change I told my Ford dealer that "I still smell burning oil", they checked but couldn’t find any leak so, I went on my way. Another of my many trips to MO-PA-MO I have an issue with my climate control so I take it in to have the HVAC checked out and advise of the oil smell again. The dealer reprograms my HVAC but still no identification of the pungent oil smell source.
Another family trip and this time my A/C starts malfunctioning again, I pull over and try to figure out the HVAC issues and smell the burning odor again. In April of this year and around 72K of my 75K ESP warranty I figured I’d go to a different dealer to see if they can figure out my HVAC problems, get my Flex checked out by a different set of eyes and find the source of my burning oil before my warranty expires. They replace components in my A/C (blend doors actuators, lines, etc.) but still can’t pinpoint or smell or detect the source of my burning oil.
I take the car by to the previous dealer for an oil change, in and out not comments about anything abnormal. A little over a month ago I put my Flex on the rack to change my oil and now my buddy and I see the grey/black fluid on the differential and he advise that it’s likely my differential.
I take my Flex in to the 2nd Ford dealer on 11/18/15 because my HVAC, with outside temperature at 45 and the interior temperature set on 80 degrees, starts blowing cold air every time I stop at a traffic like or stop sign and figure out this fluid under my car. On Thursday, they called me to advise that the oil leak and smell is “Coming from PTU Vent, PTU needs replacing due to overheating.” $1800 repair!
The diagnosis explains why the odor was so pungent and my research also explains why my issue was difficult to identify. No one drove test drove the car to generate the engine or PTU temperature to replicate the problem and the fluid, until recently, must have been getting no further than my exhaust. I’ve contacted the dealer several times today to initiate the claim but not receiving a call back.
Does anyone have any suggestions on how I can get help from Ford or to service this unit and without the expense of full replacement?
Former 89 Taurus SHO retired at 273K
93 Taurus SHO donated @ 136K
96 Taurus GL retired @ 189K
Current 2011 Ford Flex Titanium, Eco-boost, AWD, Vista roof, 2nd row buckets, Videos in hdrst, PWR 3rd row and hatch