8.0

pretty bad
Typical Repair Cost:
No data
Average Mileage:
144,500 miles
Total Complaints:
2 complaints

Most common solutions:

  1. clean out high crankcase pressure-clog below pcv valve (1 reports)
  2. new brakes/master cylinder (1 reports)
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problem #2

Aug 162007

(reported on)

Grand Marquis 5.0L

  • Automatic transmission
  • 149,000 miles

I believe all these probs are connected. If I go up a fairly steep hill at highway speeds, the car will decelerate and start to lug a lot. At the same time I will be leaving a smokescreen behind me. At night when I park the car, there will be tar sands under the car. The rear main seal leaks, I believe because of hi crankcase pressure. The pcv valve itself is ok, there is some sort of screen/mesh under it that may be blocking the pressure. Have tried aerosol carb cleaner, seemed ok for a day. Will try more tomorrow. Runs well except for uphill and gets about 17 mpg, a lot for a car this big and old

- Grand M., Philadelphia, PA, US

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problem #1

Feb 092006

(reported on)

Grand Marquis

  • 140,000 miles

my car has no acceleration after the car shift into the next gear. I also smell smoke from under the hood.

- ckeltysgirl, Purvis, MS, US

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