Question about 1994 Chrysler Concorde

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94 Concorde electrical

The car was running fine, then would turnover but not start. Initially the "Check engine" and other dash lights would not come on when turning the ignition on so I could not get the diagnostic code. I began testing the ignition switch. I pulled fuses 19 (air bag- tested at 12v) and 20 (radiator fan tested at less than 12v) when I turned the key to check voltage my dash lights came on and the car started. If I tried to put the air bag fuse in while the car was running it would continue to run and the air bag light would go off. But the car would not restart until I pulled the fuse. If I tried to put fuse 20 in the car would die immediately. With the fuses out I was able to get the following reading. 12 33 35 35 31 32 55. I checked grounds and wiring connections and now I’m getting a 77 code as well as the others. I have a book so I know the codes are AC, Fan, EVAP, EGR, and speed control. As long as I don't put the fuses in, the car runs but the "Check engine" AND "Air bag" light stays on. Im getting ready to replace the ignition switch, am I on the right path?

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I have a similar problem with my 94 concorde... and was advised the on board computer was in need of replacement. Further research led to pulling the computer and cleaning the ground connection to the chassis. It will sometimes leak under the computer and corrode, and compromise the ground, which in turn will cause faulty "code" readings and the engine control light to come on.

Posted on Jul 08, 2008

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3dmaster
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SOURCE: electrical strangeness 94 Concorde 3.3

DEar Customer,

you have to check YOUR CONNECTION OR WIRINGF OF YOUR CAR BATTERY,& OTHER INDICATION SYSTEM,

THIS MUST HAPPENS WITH CAR WHEN CAR CONNECTION MAY GOES LOOSE,OR DISCONNECTED FULLY,

reconnect this all after cleanings all wirings & connectors,

THNX

Posted on May 20, 2008

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DEar Customer,

you have to check YOUR CONNECTION OR WIRINGF OF YOUR CAR BATTERY,& OTHER INDICATION SYSTEM,

THIS MUST HAPPENS WITH CAR WHEN CAR CONNECTION MAY GOES LOOSE,OR DISCONNECTED FULLY,

reconnect this all after cleanings all wirings & connectors,

THNX

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