1992 Cadillac Deville GAS MILEAGE

1992 CADILLAC DEVILLE
10,000 MILES • V8 • FWD • AUTOMATIC
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KATAMAN1
  • MEMBER
  • 1 POST
For years I got 25-26mpg on highway. Now I get 18mpg. In the city the mileage is the same-13mpg. I had a complete dealer tuneup, converter and fuel injectors cleaned. Where are the map/maf sensors located? After I check the sensors what else can I do?
Mar 26, 2009 at 11:33 AM
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DR LOOT
  • ✓ASE Certified Mechanic
  • 2,311 POSTS
  • ASE Certified Mechanic
looking straight at the engine, the right side will be against the firewall and the lift slide towards the front of the car;
1. the map sensor is located on the right rear side of the throttle body;
2. the maf sensor is located on the right side vale cover;
when you took your vehicle in for a tuneup, did they change the fuel filter? you may want to do a compression check, make sure you don't have any weak cylinders, the vehicle may need a vale job at 100,000 miles
Mar 26, 2009 at 12:26 PM
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