I have a 97 mercury mystique i just bought and it shifts weird so i was to,d it was a shift sensor and iam making sure thats what its actually called cuz i cant afford too buy one and it not be it i stomped on gas and then let off and it shifts hard but it goes fine after that but then sometimes out of the blue it starts winding out like its in neutral and i have too wait til it shifts or stop and then start from a stop for it too shift. so is it a shift sensor im a gal who knows nothing......

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• 2 Answers

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Posted on Jan 02, 2017

Randy Harkins

• 335 Answers

SOURCE: 99 Mercury sable speedo/tranny

VSS (vehicle speed sensor) Tells the PCM (computer) the speed of the vehicle so the PCM can make the proper information to the TCM (transmission control module) to shift.
YOU are goin gto need a scan tool NOt a code reader to monitor the VSS to see what it is putting out for speed when the car is moving But I believe you need a VSS but do not not Go out and buy one until you have had it tested , and can positively confrim it is bad first. Please rate this a fixya if you find this advice helpful, Thanks Randy

Posted on Sep 02, 2008

Colin Stickland

• 22326 Answers

SOURCE: 98 mercury sable starts and

got me racking my one ameoba brain cell this one,and i cant think of anything that i have had like this sort of problem,except once with an old petrol commer truck many years ago,and the problem here was the inlet maniifold was loose.Now as this is obviously an auto then when the engine "kicks " as its dropped into gear then something is causing it to cut out .Now i suggest you check manifold nuts are tight first.Then check all the wiring connectors onto the sensors on the engine ,pulling the rubber covers back and checking the wires are connected and none broken or and undue bending that could have broken the copper inside the insulation.Then check the actual connectors themselves ,ensuring they are not broken or burnt.If you cant find anything then call out your local mobile mechanic as he will no doubt have a plug in tester and when engine cuts out it should show a fault??But if it is one of these sensors then iam at a loose end as to what one would cause this sort of fault because when i was at college we were still taught how to white metal and scrape the big end and crank bearings.Not to walk around with white coats and plastic pervert gloves and all looking like bill gates type nerds who can only talk about gigas and OBDII also wouldnt dream of changing a clutch on a big truck on the side of the road with only a trolley jack and a couple of pieces of 4x4 and a chain.Let alone sort out the truck driver and give him a right hander for burning the clutch out in the first place.

Posted on Jan 31, 2009

SOURCE: firing order of mercury mystique

What engine size and year?

Posted on Mar 22, 2009

SOURCE: mercury mystique starter location

its a 6 I beleive its a 2.5

Posted on Mar 24, 2009

Chuck Martin

• 783 Answers

SOURCE: P1744 TCC on a 2000 Mercury Cougar

On that model it is almost always the torque convertor.

Posted on Apr 10, 2009