Question about 1994 Cadillac DeVille
We have replaced the gas cap, EVAP at engine, the EVAP control at gas tank and the fuel pump. We reset the lights and after 2 days and driving over 200 miles the lights come back. We have had 4 garages do the work listed at considerable expense and still the lights came back.
The engine runs great and we did also replace plugs and plug wires There is 122,000 miles on xar and iy runs great except for the light problem. Any ideas???
There is a pressure sensor on the fuel tank, it is most likely bad and makes the system look like it has a leak to the computer that monitors the sensor, replace the evap system gas tank pressure sensor
Posted on May 28, 2010
Testimonial: "Thanks - Have done the suggested repairs and still have problem - Will check with garage to run computer and check codes. Thanks"
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Posted on Jan 02, 2017
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