Hyundai Motor 2002 Elantra Logo

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John Murty Posted on Apr 21, 2017
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Input and Output Speed sensors changed but car is still not running.

The 2002 Elantra is breaking down often. It appears to be a transmission problem. The car appears to go into "shut down" mode, as in it will drop down gears and revs up without going anywhere. Then when it is parked, it will not move unless it is left alone for a few hours, then will work fine again. We replaced input and output speed sensors but this has not worked. Before we changed spark plugs, wires, the water pump, etc but still nothing useful. This problem is Killing Us! It seems the input speed sensor should have fixed it, but it still does not work. Please advise.

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Jeff Armer

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  • Hyundai Master 15,575 Answers
  • Posted on Apr 21, 2017
Jeff Armer
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You don't say if you had it checked for DTC's - diagnostic trouble codes ? Have a scan tool that views sensor data hooked up . See what the PCM/ECM or TCM is see for input data . Your best bet mite be to take to a qualified repair shop that has the diagnostic equipment an knowledge to find the problem . Rather then guessing an just replacing parts .

4 Related Answers

Anonymous

  • 276 Answers
  • Posted on Nov 19, 2008

SOURCE: VEHICLE SPEED SENSOR

The VSS sensor is located on the transaxle .
If the VSS is defective replace the instrument cluster

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Anonymous

  • 3533 Answers
  • Posted on Mar 20, 2009

SOURCE: replacing output speed sensor on 2002 sonata

try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you

Anonymous

  • 3489 Answers
  • Posted on Jan 23, 2010

SOURCE: I own a 2001 Hyundai Elantra and I can't seem to

im assuming that you also have a check engine light on. first have that scanned. it sounds like a knock sensor keeping the timing retarded. was the timing belt replaced recently? if it wasnt mechanically timed properly, it would cause this. has the fuel system been checked for adequate pressure and volumn?

Anonymous

  • 1 Answer
  • Posted on May 28, 2010

SOURCE: I have a 2001 hyundai elantra with automatic

Hi there, I live in Colombia South America and I have a HYUNDAI Elantra 2001 automatic transmission and it behaves exactly like yours. I have the best mechanic guy intown and also the dealer garage take down the whole transmission and nothing changed. It seems now to be something with the electric wiring system.

I would recommend you to have the electric system checked.

Good luck.

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do you mean you changed the engine speed sensor for the auto box ? works off the engine rev's this is not on the same line as the rev counter it counts the rotations of the shaft spining.
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Speed sensor

Speedometer sensor measures axle(driveshaft) speed for your speedometer gauge.
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I suspect that your transmission is slipping, you may not feel it yet but the sensors are picking it up in the relative speed signals from the input and output sensor.
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Describe your is there a sensor on a 2000 Hyundai elantra automatic transmission Problem

YES!... There are many sensors on an automatic transmission which could pose a problem -- depending on what the problem actually is. For example, there are 'input' and 'output' speed sensors, there is a fluid temperature sensor, there is a vehicle speed sensor, and there are several solenoid valves located inside the transmission connected to the valve body. Each and every one of these items can be a problem -- again -- depends on what the problem ACTUALLY is. Agreed?
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For the record: if the sensors they're referring to are the input or output shaft speed sensors, they are very easy to find...just remove the air intake box (where the air filter is) and they're right there on top of the transmission. Input sensor is the one closer to the front of the vehicle, output towards the rear.
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VEHICLE SPEED SENSOR

The VSS sensor is located on the transaxle .
If the VSS is defective replace the instrument cluster
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Please help!

does the speed sensor keep breaking indie the transmission?
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