Took the car to Autozone and they are telling me it could be a camshaft wire, plug or sensor. I just bought this car 3 days ago - how difficult is this repair - how expensive - major repair or something minor
It all depends on why the light came on.....could be as simple as running out of gas ...............lol. when the light comes on it is because the computer is recieving an error sygnal from any one of as much as hundreds of sensors. the only way to know is to read what the computer is indicating is out of it's parameters. there are error code readers, and autozone i believe will read the code for free. once the error code is detected you can take it from there as to how to proceed. non of the items you indicated in your question are serious or difficult to repair.
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ok this could be 3 things, your coil pack, crank position sensor or your camshaft position sensor, if you had your check engine light on, take it to a local autozone and they will scan it for free, after the scan they will get a code and they will tell you what sensor is bar, do that first, if they does´t know what are problems just tell them to give you the codes and let us know the code numbers, hope this helps.
three things can trigger codes, an actual malfunction of the sensor, a loose timing belt (cam sensor) wiring problems like a defective sensor connector or wiring to the connector and a defective engine control computer, so just throwing part at the problem is very unwise, have GM dealer diagnose the codes and then based on the results you decide what you want to try and replace and what u think is above your skill level and better left to a professional technician.
the camshaft position sensor is a $40 - $70 part at rockauto.com, depending on your engine. first check the connections to the sensor to make sure the computer is getting a good signal. You may have to remove the sensor and look into the mounting hole to see if there is an obstruction that may be blocking a proper signal. check the wiring to see if it may have corrosion or a short to ground.
Have someone who knows what they are doing try to pull the code, instead of erasing it and telling you it's fine. That is a no go. I would say lots of hesitation could have to do with the crankshaft position sensor, camshaft position sensor, etc.
P0171 is LEAN and P0303 is misfire number 3 cyl. Its time to stop guessing and pay for a correct diagnosis. Find a shop that works on VW and has the tools to work on it. DO NOT put those Bosch Platinum Spark plugs in that Ottozone tries to sell everybody.
Sounds like the Crankshaft sensor is damaged and needs to be replaced.
The Camshaft position sensor works along with the Crankshaft position sensor. Determining the timing and injectors’ pulse, to deliver fuel to the cylinders. The Camshaft position sensor is a hall sensor, which it triggered by a magnet in the Camshaft. On 4 cyl(2.4) models the Camshaft position sensor is located to the left side of the timing cover. On the V6(3.1 & 3.4) it’s located at the front of the engine block (passenger side), below the power steering pump. Check the terminals for breaks and looseness, repair if needed. Here is the plug indentification picture. The wires are different for the 4cyl and V6, Please note below. Though the plugs are the same three wire connectors. Plug is as listed :1 - Camshaft position sensor signal on 4 cyl, 12 volt supply on the V6 2 – Sensor ground 4 cylinder, Camshaft position sensor signal on the V6 3 – 12 volt supply on the 4 cylinder, sensor ground on the V6
First check for voltage and ground circuits from the PCM. Disconnect the electrical connector from the Camshaft sensor and connect the positive lead (on the wiring harness) of the voltmeter to the red wire(#3) on the 4 cyl and the red/white wire on the V6(#1).
Connect the negative to the pink/black wire on the 4 cyl(#2), or black on the V6(#3). Turn the key on, the voltmeter should read 12 volts, if not check the wiring to the PCM. If the circuits are good, have the PCM checked out by a Dealer or other properly trained shop. To check the operations; Reconnect the Camshaft position sensor, using a probe to back probe the brown/white wire terminal of the camshaft PS. Plug locations on4 cyl (#1) and theV6(#2) Connect the positive lead of the voltmeter to the probe and the negative to a good engine ground. Turn the key on, the voltmeter should read approx 10 volts.
*Rotating the engine by hand with a breaker bar attached to the crank pulley. Watching the voltmeter, the voltage should remain a steady 10volts then quickly drop to zero and back to 10vlts as the magnet passes the sensor. If the tests results are incorrect then replace the camshaft position sensor.
* Rotating the engine slowly, and at least two full revolutions of the engine for accurate results.
Camshaft sensor Replacement
On the 4 cylinder - Disconnect the electrical connector - Remove the camshaft position sensor-mounting bolt and pull the sensor out of the camshaft cover. - Replace the “O” ring and lightly lubricate it with clean engine oil. - Install in the reverse of those procedures.
On V6 - Remover the drive belt. - Remove the power steering unit but don’t disconnect the hoses, just lay it aside. - Disconnect the electrical connector from the harness; paying attention to the route the wires are in. - Remove the camshaft ps mounting bolt and pull the sensor out of the block. - Install in reverse procedure.
If the sensor flange breaks off and you cant remove the CPS, try screwing a heavy screw into the top of the sensor and pulling it out with plyers/vise-grips. Good luck and thank you for using Fixya
if the cam is out of time it will give a code it may have jumped a tooth and now the cam is out of time or the belt is just really loose and the comp thinks its out of time and a belt that has jumped a tooth will make the engine run like ****
It is possible that the camshaft sensor is intermittently failing. But also check the actual wire connector to the sensor. If the connector is making contact at times, then your computer would read it at times.