Poor running 2001 hyundai amica si car is running badly,stuck in limp mode,almost like constant 1st gear fault code 0343 camshaft position sensor fault code 0444 purge valve where do i find these parts in the engine thankyou

Tidied up the question a bit.
Question moved to sub category

Did the inability to start happen right after you put the new battery on? Did you reset the security system?

P0343 HYUNDAI Code Camshaft Position Sensor 'A' Circuit ...

https://www.autocodes.com > p0343_hyundai
Repair Information for P0343 Hyundai code. Learn what Camshaft Position Sensor 'A' Circuit Range/Performance means, location and how to repair?

Dirty connections and grounds!

P0626 OBD-II Trouble Code: Generator Field/F Terminal ...

https://www.yourmechanic.com > Articles
P0626 means there's a fault on the generator field circuit due to a faulty alternator, battery, wiring, or poor communication between control module.

P0342 HYUNDAI Code Camshaft Position Sensor 'A' Circuit ...

https://www.autocodes.com > p0342_hyundai
Repair Information for P0342 Hyundai code. Learn what Camshaft Position Sensor 'A' Circuit Low Input Bank 1 Or Single Sensor means, location and how to ...

run fault codes to get the root problem
indicates that the limp mode has been activated and could be poor fuel pressure or accelerator/ throttle position position sensors

Why did you have them replaced? Was it in limp mode before the replacement? What codes did you have before and what codes do you have now? Neither one of those sensors will throw it in limp mode.

P0118 The engine coolant temperature (ECT) sensor is a thermistor screwed into a coolant passage in the cylinder head. Sensor resistance is high when coolant temperature is low and resistance drops when coolant temperature increases. The powertrain control module (PCM) provides a 5 volt reference and a ground to the sensor. The PCM monitors voltage drop to determine coolant temperature. If the ECT reads less than freezing temp. when engine has been running for more than a few minutes, the PCM determines a circuit fault and sets this code. Or if the PCM determines the sensor resistance is out of specs, this code is set.
Potential Symptoms Symptoms of a P0118 could include:

• Very poor fuel economy
• A no start condition
• Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
• Illumination of MIL

P0341

Camshaft Position Sensor Circuit Range/Performance
What does that mean? This P0341 code basically means that the powertrain control module (PCM) detected a problem with the camshaft signal.
The camshaft position sensor (CPS) sends a specific signal to the PCM for Top Dead Center on the compression stroke as well as signals indicating the position of the cam sensor. This is accomplished through a reluctor wheel attached to the camshaft that passes by the cam sensor. Any time that the signal to the PCM is inconsistent with what the signal should be, this code is set. NOTE: this code can also be set by extended cranking periods.
Symptoms The car will likely run with this code set, as it is often intermittent and also because the PCM can often operate the vehicle in "limp-in/limp-home" mode even with a cam sensor signal problem. There may be no noticeable symptoms other than:

• Poor fuel economy (if engine runs)
• Possible no start condition

P0340 Hyundai - Camshaft Position Sensor 'A' Circuit Malfunction Bank 1 Or Single Sensor Possible causes
- Faulty Camshaft Position Sensor
- Camshaft Position Sensor harness is open or shorted
- Camshaft Position Sensor circuit poor electrical connection
- Faulty starter motor
- Starting system circuit
- Dead (Weak) battery

Read more: http://engine-codes.com/p0340_hyundai.html#ixzz338zFujgZ

the .pcm puts it in limp mode and it will stay in mode until light is turned off. You need to get the trouble code, repair it, erase the codes (with a scanner that retrieves the codes), and then you will be out of limp home mode.

p0341 camshaft position sensor circuit range /performance didnt specify what vehicle but check the wiring and connection for the camshaft position sensor if looks good than problem with sensor not an expensive fix

P0341 - Camshaft Position Sensor Circuit Range/Performance

This P0341 code basically means that the powertrain control module (PCM) detected a problem with the camshaft signal. The camshaft position sensor (CPS) sends a specific signal to the PCM for Top Dead Center on the compression stroke as well as signals indicating the position of the cam sensor. This is accomplished through a reluctor wheel attached to the camshaft that passes by the cam sensor. Any time that the signal to the PCM is inconsistent with what the signal should be, this code is set. NOTE: this code can also be set by extended cranking periods.

Symptoms: The car will likely run with this code set, as it is often intermittent and also because the PCM can often operate the vehicle in "limp-in/limp-home" mode even with a cam sensor signal problem. There may be no noticeable symptoms other than:
* Poor fuel economy (if engine runs)
* Possible no start condition


Causes: A code P0341 may mean that one or more of the following has happened:
* Cam sensor wiring routed too close to spark plug wiring (causing interference)
* Poor wiring connection at cam sensor
* Poor wiring connection at PCM
* Bad cam sensor
* Damaged reluctor wheel

Possible Solutions: Often relacing the sensor fixes this code, but not necessarily. Therefore it's important to check the following:
* Check that the wiring isn't routed too close to any secondary ignition components (coil, spark plug wires, etc.)
* Visually inspect the wiring at the sensor for any burn marks, discoloration indicative of melting or chafing
* Visually inspect the cam sensor for damage
* Visually inspect the reluctor wheel through the cam sensor port (if possible) for any missing teeth or any damage
* If reluctor isn't visible from outside the engine, visual test can only be done by removing cam shaft or intake manifold (depending on engine design)
* If all checks out okay, then replace the sensor.

Related Camshaft Trouble Codes: P0340


Hope helps (remember to rate this answer).

Have you checked for trouble codes? Trans. stuck in 2nd gear is 'limp mode' when there is a problem, which could be a bad sensor. Scan for any stored codes 1st to get some clues as to what is wrong.

dear friend if your vehicle get stuck in third gear,then it means your vehicle goes in limp mode,you should take your to a repair shop for a diagnostic test,there must be fault code present.