Replacing crankshaft position sensor for hyundai elantra 1999

Here's a link to what your crankshaft sensor looks like. Duralast Crankshaft Position Sensor SU4127 ReadReviews onDuralast SU4127 The Crankshaft Position Sensoris located: Under hood, center, upper engine area, mounted in front passenger side of engine block.Here's another link on replacing your sensor.
Repair Guides Electronic Engine Controls Crankshaft Position ckp Sensor...

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Hyundai Crankshaft Position Sensor Removal - YouTube

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https://www.youtube.com/watch?v=0YLYDU_5w8w
Jul 12, 2012 - Uploaded by richpin06a
Hyundai Elantra Crankshaft Position Sensor Removal.

Hyundai accent 2001 - YouTube

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https://www.youtube.com/watch?v=fzqMNho3xIU
Nov 25, 2012 - Uploaded by mig dups
2000 Hyundai Accent GS turns over - no start. ... HyundaiCrankshaft Position Sensor Replace Timing Belt ...

Check for engine codes related to Camshaft Position Sensor or Crankshaft Position sensor. Replace as necessary.

Check starter fuse able link it might b near exhaust manifold and it is getting hot if it is replace link and move it as far as possible from manifold cover it with electrical tape or heat resistant tape to keep cool same for all sensor wires

Is the engine getting fuel and spark?

Try to put a few teaspoons of gas in the throttle body to see if it starts up. If it doesn't then the engine's spark plugs may not getting spark.

A possible coil may be the root of the above problem.

If it does start and run for a few seconds then the spark is good, but the fuel pump may not be pressurizing (bad fuel pump) or the fuel injectors are not firing (possible PCM or Powertrain Control Module).

A crankshaft position sensor can also cause a no start condition.
It is located near the Crankshaft of the engine.

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Here's more information about the crankshaft position sensor which if bad, can cause a no start or no run condition.
Crankshaft Position Sensor Engine speed is a very important input to the Engine Management System (EMS). Crankshaft speed and position are the basis for many calculations made by the computer. Crankshaft position values are transmitted to the computer by pickup coils also known as Permanent Magnet (P/M) generators, hall-effect sensors or optical sensors. The Crankshaft Position Sensor (CKP) also known as engine speed sensor is located in close proximity to the crankshaft.
In addition, the EMS uses minute variations in the CKP sensor data to determine engine misfire. The EMS uses this information in conjunction with the camshaft position sensor to perform misfire diagnostics.
Related Symptoms No Start / Intermittent Start Condition – Can be caused by a faulty crankshaft position sensor due to loose connections, bad grounds, high resistance in the circuit, or opens in the circuit. (See also Engine Mechanical)
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These are just a few possibilities, and if one takes it to the dealer to have the engine diagnosed, that might be a good place to continue of the above doesn't isolate the problem sufficiently for repair of the no start condition.

Also have a 2000 Hyundai Elantra. Interesting same thing has gone wrong with mine within two months of yours. Get the crankshaft position sensor replaced. Maybe these just wear out in time. The car will start one day and the next day it will not. It was a puzzle until the check engine light came on this last time. I actually cheered because it meant the computer would register a problem. It cost $220 for parts and labor at the dealership. It's worth it or it will continue to leave you stranded at various times without warning. Since replaced I have noticed my car engine seems to be running better that I didn't notice was off before. Car has been fine so far.

could be the crankshaft position sensor or throttle pos. sensor

that code P0335 = No signal of crankshaft position sensor to ECM during cranking. have to check all the wires to this sensor

could be ??the windings in the sensor have the insulation on the way out

yes sir, check and make sure the crankshaft positioning sensor is plugged in or it may have gotten damaged when pulling the crankshaft pulley off.