Question about 1992 Mercury Grand Marquis

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Code 52 i keep getting code 52 on my mercury grand marquise what does that mean

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I haven't worked on an OBDI Ford in some time, after some quick research I discovered Code 52 being the Power steering pressure switch-circuit open. Not a big concern as all it does is assist in parking lot manuvers. The switch when it senses a high load, tells the ECM to idle engine up based on that load. If indeed it is the switch and not a wiring issue (which it generally isn't wiring because the harness is always wet with PS fluid) It is the pressure switch it's self, it can be found on the pressure side of the power steering pump, generally a steel braided or hard line with no clamps. It's a cheap part, and worth it alone to not see the CEL. Hope this helps.

Posted on Sep 15, 2008

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Code 52 is related to the POWER STEERING PRESSURE SWITCH but dont run out and buy one first you must TEST to be sure of what set the code. Just because the code is there there is nothing to say what set the code it does NOT have to be a faulty switch. Just changing the switch is the wrong way to DIAGNOSE the problem

Posted on Sep 15, 2008

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