Question about 2004 Dodge Neon

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My car do not shift. check engine on and speedo do not work anymore

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If your car is manual, clutch not releasing completely, loose or damaged shift linkage, insufficient transmission oil or oil is in poor condition, sticking or jamming gears, worn or damaged striking rod. Autozone, Advanced Auto, or O'reilly can scan/read your check engine code. Speedo faulty or vss speed sensor no longer works.

Posted on Nov 23, 2013


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Posted on Jan 02, 2017

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SOURCE: my speedo going up and down car wont shift when

output speed sensor on the transmission is bad.easy to replacetransdoc_2.jpg

Posted on Mar 30, 2011

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1992 Subaru legacy wagon will not shift up from first gear. it is an AT.

run the fault but all you describe is operated from the VSS sensor ( vehicle speed sensor)
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Assuming that your van is driving smoothly and your gears are shifting smoothly, start by checking your tranny fluid level. If it is low, that may be one of a few possible problems. If fluid level is fine, your speedo sensor may have a loose connection or could be going out which is what may be triggering the check engine light. I had that happen on my Jeep Cherokee. Speed sensor stopped working and the light was on constantly. Remember, if your speedometer sensor does not work, your odometer and trip meter will not turn either. Speedo sensors are not very expensive and pretty easy to change. Start with the easy tasks first: check fluids, check connections, replace sensor. If that doesn't work, get it into a shop (or talented and well tool-supplied buddy) and get a code(s) for the problems. Good luck!

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1 Answer

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95 taurus will not shift out of first gear.

My inlaws Ford Taurus had a similar problem. Is the speedometer working? Their speedometer was working one minute and then the next it wasn't, when it wouldn't shift, the speedo wasn't working either. When the speedo decided to work the transmission shifted. In this case I deduced and researched the speedo sensor. My theory was that if the computer couldn't determine the speed, it wouldn't know when to shift. My research validated my theory and basically stated that when the speedo doesn't tell the computer how fast the car is moving then the computer places the transmission into 2nd gear as a default Safety Mode. I replaced the speedo sensor (located on the backside of the engine on top of the axle with a wire lead pluged into it). When I replaced it their troubles were over. I don't know if this is your problem, but it's something to look into.

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my 95 Chevy Lumina Seems to have tjis Similar Problem Especially after Driving in 6+ Inches Of Snow. I have Found that I use a Lot Of Trannie Fluid Check it. That Usually will get my speedo working right again, and Make my car Shift Accordingly

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