My audi a4 1.8fsi 4 cylinder double cam runs rough. the diagnostic tool says the camshaft and camshaft speeds are not corresponding. what could be the problem?

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You have 2/4/6 timing marks 180 degress out on exhaust or intake cam .

Did your special tool ?
Rotate the crankshaft using the J 42098 until the #1 cylinder is at 60 degrees before top dead center (BTDC).
Install theJ 42069 Crankshaft Locking Tool.
Rotate the crankshaft in the engine rotational direction (clockwise) using the J 42098 until the #1 cylinder is at top dead center (TDC) and tighten the lever arm to the water pump pulley flange.
Important: Ensure that the alignment of the crankshaft is not 180 degrees off. The alignment mark must align with the corresponding notches on the rear timing belt cover.
Install the 1-2 and 3-4 camshaft locks, the J42069-1 Timing Belt Alignment Kit and the J42069-2.
Important: Do not rotate the crankshaft if the camshafts are not locked in place with the 1-2 and 3-4 camshaft locks (J42069-1 and J42069-2).
Important: Do not rotate the camshafts unless the crankshaft is at 60 degrees BTDC or the valves may contact the crankshaft.
Loosen the tensioner pulley.
Remove the timing belt.

P0346: Camshaft Position Sensor Intake Circuit Range/Performance Bank 2 http://www.autocodes.com/p0346_audi.html

P0391:Camshaft Position Sensor 'B' Circuit Range/Performance Bank 2
http://www.autocodes.com/p0391_audi.html

P0304: Cylinder 4 Misfire Detected http://www.autocodes.com/p0304_audi.html

P0306: Cylinder 6 Misfire Detected http://www.autocodes.com/p0306_audi.html

P0305: Cylinder 5 Misfire Detected http://www.autocodes.com/p0305_audi.html

P0300: Random Cylinder Misfire Detected http://www.autocodes.com/p0300_audi.html

Bank one is passenger side cylinder bank.
Cam sensor should be at front of cylinder head.

check coil packs

Generic OBD II Diagnostic Trouble Codes

DTC CODES P0300 to P0399

P0300....Random/Multiple Cylinder Misfire Detected

P0301....Cylinder 1 Misfire Detected

P0302....Cylinder 2 Misfire Detected

P0303....Cylinder 3 Misfire Detected

P0304....Cylinder 4 Misfire Detected

P0305....Cylinder 5 Misfire Detected

P0306....Cylinder 6 Misfire Detected

P0307....Cylinder 7 Misfire Detected

P0308....Cylinder 8 Misfire Detected

P0309....Cylinder 9 Misfire Detected

P0310....Cylinder 10....Misfire Detected

P0311....Cylinder 11 Misfire Detected

P0312....Cylinder 12 Misfire Detected

P0313....Misfire Detected with Low Fuel

P0314....Single Cylinder Misfire (Cylinder not Specified)

P0320....Ignition/Distributor Engine Speed Input Circuit

P0321....Ignition/Distributor Engine Speed Input Circuit Range/Performance

P0322....Ignition/Distributor Engine Speed Input Circuit No Signal

P0323....Ignition/Distributor Engine Speed Input Circuit Intermittent

P0324....Knock Control System Error

P0325....Knock Sensor 1 Circuit (Bank 1 or Single Sensor)

P0326....Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)

P0327....Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)

P0328....Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)

P0329....Knock Sensor 1 Circuit Input Intermittent (Bank 1 or Single Sensor)

P0330....Knock Sensor 2 Circuit (Bank 2)

P0331....Knock Sensor 2 Circuit Range/Performance (Bank 2)

P0332....Knock Sensor 2 Circuit Low Input (Bank 2)

P0333....Knock Sensor 2 Circuit High Input (Bank 2)

P0334....Knock Sensor 2 Circuit Input Intermittent (Bank 2)

P0335....Crankshaft Position Sensor A Circuit

P0336....Crankshaft Position Sensor A Circuit Range/Performance

P0337....Crankshaft Position Sensor A Circuit Low Input

P0338....Crankshaft Position Sensor A Circuit High Input

P0339....Crankshaft Position Sensor A Circuit Intermittent

P0340....Camshaft Position Sensor 'A' Circuit (Bank 1 or Single Sensor)

P0341 Camshaft Position Sensor 'A' Circuit Range/Performance (Bank 1 or Single Sensor)

P0342....Camshaft Position Sensor 'A' Circuit Low Input (Bank 1 or Single Sensor)

P0343....Camshaft Position Sensor 'A' Circuit High Input (Bank 1 or Single Sensor)

P0344....Camshaft Position Sensor 'A' Circuit Intermittent (Bank 1 or Single Sensor)

P0345....Camshaft Position Sensor 'A' Circuit (Bank 2)

P0346....Camshaft Position Sensor 'A' Circuit Range/Performance (Bank 2)

P0347....Camshaft Position Sensor 'A' Circuit Low Input (Bank 2)

P0348....Camshaft Position Sensor 'A' Circuit High Input (Bank 2)

P0349....Camshaft Position Sensor 'A' Circuit Intermittent (Bank 2)

P0350....Ignition Coil Primary/Secondary Circuit

Check for vacuum leaks on intake hoses/ manifold. Check for broken crank case breather pipe near joint with intake pipe. If the cylinder head has been worked on, check fault memory of engine control unit. If it picks up a fault [camshaft- crankshaft incorrect correlation] then the cam-chain timing will have been set incorrectly.

hi, here is a guide i have come across on this site written by another expert it should be the one for your engine but always double check.

If you are unsure what you are doing then please go out and buy a haines workshop manual as these tell you every detail you need to know so that would be your best solution.

Please dont do this work if your unsure what you are doing as you could damage the engine beyond repair so you have been warned;

it covers single cam and if you scroll down it shows double cam ok

Sep 14, 2009 - VW Passat & Audi A4 1990-2000 Repair Guide
Timing Belt - REMOVAL & INSTALLATION

2.8L SOHC (AFC) V6 Engine

1. Note the radio security code and disconnect the negative battery cable.
2. Place the (hood) lock carrier in the service position. For additional information, please refer to the following topic(s): Body And Trim, Service Position, Front Bumper, Hood Lock Carrier.
3. Remove the engine accessory drive belt. For additional information, please refer to the following topic(s): General Information And Maintenance, Routing Maintenance And Tune-up.
4. Turn the engine by hand to Top Dead Center (TDC) on the firing stroke for cylinder No. 1.

NOTE The large holes in the camshaft sprocket lock plates should be on the inside facing one another.

1. Remove the Crankshaft Position (CKP) sensor from the lower left side of the engine block. Make sure the engine is at TDC and install the threaded crankshaft holding pin Tool No. 3242 and lightly tighten.
2. Remove the upper timing belt covers, the crankshaft vibration damper and then the lower timing belt cover.
3. Loosen the camshaft sprocket bolts slightly and use a suitable pulley to release the sprockets from the tapered ends of the camshafts.
4. Loosen the tensioner roller and remove the drive belt.

To install :

1. Install the timing belt over the sprockets, then the idler rollers and lastly over the tensioner.
2. Install camshaft alignment tool holder Tool No. 3243 into the camshaft alignment flanges.
3. Check and adjust the cam belt tension such that the upper left portion of the belt between the tensioner and the left cam gear can just be twisted 90° ( 1 / 4 turn).
4. Tighten the cam belt tensioning roller to 33 ft. lbs. (45 Nm), and the camshaft sprocket bolts.
5. The balance of the installation is in reverse order of removal.

2.8L DOHC 5V (AHA) V6 Engine

1. Note the radio security code and disconnect the negative battery cable.
2. Place the (hood) lock carrier in the service position. For additional information, please refer to the following topic(s): Body And Trim, Service Position, Front Bumper, Hood Lock Carrier.
3. Remove the engine accessory drive belt. For additional information, please refer to the following topic(s): General Information And Maintenance, Routing Maintenance And Tune-up.
4. Turn the engine by hand to Top Dead Center (TDC) on the firing stroke for cylinder No. 1.

NOTE The large holes in the camshaft sprocket lock plates should be on the inside facing one another.

1. On the cylinder block near the crankshaft, remove the sealing plug from the lower left side of the engine block. Make sure the engine is at TDC and install the threaded crankshaft holding pin Tool No. 3242 and lightly tighten.
2. Remove the upper timing belt covers, the crankshaft vibration damper and then the lower timing belt cover.
3. Loosen the camshaft sprocket bolts slightly and use a suitable pulley to release the sprockets from the tapered ends of the camshafts.
4. Using a 8mm Allen® wrench, rotate the timing belt tensioner roller clockwise until the tensioner is compressed; then, insert a 2mm spring pin through the tensioner housing and tensioner plunger to secure it in place. When the plunger is secure, release the wrench tension.
5. Remove the damper-to-crankshaft bolts and the damper.

NOTE It is not necessary to remove the center bolt when removing the crankshaft damper.

1. Remove the serpentine belt idler and the crankshaft damper guard.
2. Mark the running direction of the timing belt and remove it from the pulleys.

Fig. Crankshaft pulley alignment location for TDC-Audi 2.8L V6 engines




Fig. Left camshaft sprocket alignment position for TDC; right camshaft position is similar-Audi 2.8L V6 engines




Fig. View of crankshaft holding tool installed-Audi 2.8L V6 engines




Fig. View of camshaft locator bar installed-Audi 2.8L V6 engines


To install:

1. Make sure that the camshaft pulleys and the crankshaft pulley are in alignment with TDC of the No. 1 cylinder's compression stroke.
2. Install the timing belt; make sure the timing belt is installed in the correct running direction from which it was removed.
3. Using a 8mm Allen® wrench, rotate the timing belt tensioner roller clockwise until the tensioner is compressed; then, remove the 2mm spring pin from the tensioner housing. Slowly, release the tensioner spring pressure to put pressure on the timing belt.
4. Install the crankshaft damper guard and the serpentine belt idler pulley; torque the idler pulley bolts to 33 ft. lbs. (45 Nm).
5. Install the crankshaft damper and torque the damper-to-crankshaft bolts to 15 ft. lbs. If the damper-to-crankshaft center bolt was removed, torque it to 147 ft. lbs. (200 Nm) plus 180° 1 / 2 turn).
6. Remove the Crankshaft Holder tool No. 3242 and install the sealing plug.
7. Replace the remaining components by reversing the removal procedures.
8. Refill the cooling system and the automatic transaxle. Connect the electrical connectors. Install the negative battery cable last.
9. Test drive the vehicle.

The "cam crank" sensor is the "reader" for position and speed of the camshaft. This sensor send informations to Engine Control Unit about camshaft position and speed. If the sensor is faulty engine stops!

First things first: have someone use a scan tool to check for diagnostic trouble codes (DTC's). If the engine is misfiring, regardless of why(spark plug/fuel injector/ bad camshaft lobe, etc.), a misfire code will be set. These particular codes will begin with PO300. An example is code P0301, indicating cyl# 1, P0302, cyl#2, etc.
Then the diagnostician will need to examine the data for short term and long term fuel trim, oxygen sensor readings, etc. to pinpoint the area needing attention.

The problem could be as simple as a bad spark plug, a bad ignition coil or some other "external" problem.
An engine compression test, a simple diagnostic procedure, will tell you if you have an internal problem, like a bad cam, or valves, or something else which can affect engine compression. I am not familiar with Hyundai having camshaft failure problems. I don't know how many miles you have on your Hyundai, if your under 100,000, I doubt you have internal trouble. You need to make friends with a good auto technician!