VW Polo 1.2L Engine Timing Issues: Resolving Error P0341 and Timing Chain Replacement

[@leejones3377]

Thank you for this video, I'm currently in the middle of doing this job (stripped awaiting chain kit) and this video has been invaluable. Information I've gathered for anyone else looking to undertake this is the torque settings for the cam bolts are 50Nm plus 90 degrees and the crank bolt is 150Nm plus 180 degrees, all 3 bolts are torque to yield and should be replaced, they are only £6 each from VW so if you're in this far it's a no brainer. Don't forget to replace the timing case crank seal too which comes with the kit. Torque settings for the casing bolts are; 3 large ones 50Nm, medium size ones 25Nm and smaller ones 10Nm. Tip use M6 studs (cut bolts) to line the casing up when refitting. Thanks again.

[@SanuMotorswithCharlie]

It sounds like you're doing a great job on your VW Polo 1.2L engine! Thanks for sharing those additional tips and torque settings for anyone tackling the timing chain replacement job. This will be very helpful for others in the community. Your mention of replacing torque-to-yield bolts and not forgetting the timing case crank seal are excellent points, and using M6 studs to align the casing is a clever tip. Attention to those details ensures the job is done right and avoids potential issues down the line. Good luck with the rest of your work! If you need any further advice or encounter any issues during reassembly, feel free to reach out.

[@thebigbowler]

Got similar symptoms on a Seat Ibiza with the same engine. Was going to try my luck replacing the sensor, but this sounds to be a waste of time. Thank you for clear explination, and potentially saving me risking engine failure.

[@SanuMotorswithCharlie]

You're welcome! I'm glad I could help. If you're experiencing similar symptoms, it's always best to properly diagnose the issue before replacing parts, especially with something as critical as the engine sensor. If you have any more questions or need further advice on your Seat Ibiza, feel free to ask. Good luck with your repair!

[@monicasilva6851]

Bom dia caro amigo tenho um seat ibiza 6j8 2010. 1.2 gasolina e quando dou partida aparece a luz no quadrante do pneu vazio e da tracao das rodas .ligando a máquina da o erro p0321 que e o sensor ! Ja foi trocado e o problema nao ficou resolvido peço por favor que me de umas luzes... obrigado

[@SofianeOudjedi]

great job ,i have the same engine in skoda fabia , i have some misfire ( code P303 ) i changed the sparkplugs and the electric coil many times , the problem again sometimes and the car work badly with EPC logo on the dashboard. any other solutions to fix it ? what i have to check ?

[@SanuMotorswithCharlie]

Thanks for your question. Lost communication codes on a Toyota Belta usually relate to issues with the CAN bus system or one of the vehicle’s control modules. Here are some common causes and steps to troubleshoot: Check Wiring and Connectors: Inspect the wiring harness and connectors for any damage, corrosion, or loose connections. Focus on areas near the modules that the code refers to, such as the ECU, ABS, or transmission control module. Test the Battery and Grounds: A weak battery or poor ground connections can cause communication issues. Make sure the battery is fully charged and all ground points are clean and secure. Inspect the Modules: If the code specifies a particular module (e.g., ECU or ABS), check its condition. Sometimes, a failed or malfunctioning module can cause the loss of communication. Use a Diagnostic Tool: Scan the vehicle with an OBD-II or advanced diagnostic tool to identify specific lost communication codes (e.g., UXXXX codes). This will help pinpoint which module isn’t responding. Reset the System: Disconnect the battery for 10-15 minutes to reset the system. Sometimes, this can clear temporary communication glitches. If the issue persists, it may require professional diagnostics to check the CAN bus network or module functionality. Let me know if you need further help or details! 🚗👍 #ToyotaBelta #LostCommunication #CarDiagnostics

[@casement18]

Hi do the crankshaft timing marks and camshaft marks have to both be in line ? In order for it to fire properly as I have an issue ATM with my car not starting first time when cranked, changed crank cam and coolant sensors and sometimes still sometimes hard to start, could timing be out

[@SanuMotorswithCharlie]

Hey Robert Casement! 👋 Yes, both the crankshaft and camshaft timing marks need to be aligned properly for the engine to fire correctly. 🔧 If they’re not in sync, it can definitely cause hard starting issues like you're describing. Since you've already changed the crank, cam, and coolant sensors, it’s possible that the timing might be slightly off. I’d recommend checking the timing chain or belt alignment to make sure everything is in place. It might also be worth looking into a timing chain stretch, which is a known issue with some 1.2L engines over time. 🚗💥 Hope this helps, and let me know if you have any more questions! 😊 #EngineTiming #P0341 #CarNotStarting

[@joelawoyomi9102]

You have done it again SANU MOTORS, Thumbs up for you guys! This is my dreadful aspect of auto repair works because setting the timing of engines vary from one engine to the other. Although, the principles are basically the same I.e aligning the camshafts with the crankshaft etc but the procedures and the detailed removals and refittings may be different from one engine to the other. If we get it wrong, I’m afraid chances are that the whole engine could be ruined and condemned. It definitely requires a high level of expertise and experience such as demonstrated here by Bronny. I prefer to get specialized in clutch jobs to engine timings, not because of the amount of work to do but simply because of the requisite skills, knowledge, experience and expertise needed to do engine timing work in the proper manner. I doff my hat for SANU MOTORS!

[@SanuMotorswithCharlie]

It's great to hear that SANU MOTORS has once again impressed you with expertise and professionalism! Engine timing can indeed be a complex and critical aspect of auto repair, requiring a deep understanding of the engine's mechanics and precise execution. It's wise to recognize the importance of specialized skills and experience in this area, as a mistake could have serious consequences for the engine's performance or even its longevity. Kudos to Bronny and the team at SANU MOTORS for their dedication and mastery in handling such intricate tasks with precision and care! Thank You

[@danielkhan1983]

Hi sanu motors great video. What's the name of the tool that you used to lock the gears while you took of the timing chain?

[@SanuMotorswithCharlie]

Engine Timing Camshaft Locking Tool For VW Polo Skoda Fabia 1.2L 6/12V ebay.us/HjDrWf Thank you

[@danielkhan1983]

@@SanuMotorswithCharlie @sanumotorswithcharlie thank you for the reply. The tool I was referring to was the one used 46 mins into the video that locked the cogs while you used the ratchet.

[@SanuMotorswithCharlie]

46 is not correct, use link for correct tool thanks

[@slater1414]

hello there, got the same model polo and i have a short to ground somewhere in the wiring for my AC, the switch panel leds do not work and the fuse blows everytime i start the car, any lead on maybe where the wiring goes bad on these ?

[@SanuMotorswithCharlie]

Hello! Tracking down a short to ground in the wiring can be quite a task, but I can give you some pointers on common problem areas and steps to follow: 1. **Inspect the Fuse Box**: Sometimes the problem can start right at the fuse box. Look for any signs of corrosion or damage around the fuse box and wiring. 2. **Check the AC Switch Panel**: Since the LEDs are not working, start by inspecting the switch panel itself. Check for any loose connections or damaged wires behind the panel. 3. **Inspect the AC Compressor Wiring**: Follow the wiring from the AC compressor back to the relay and fuse box. Look for any spots where the wiring might be rubbing against metal parts, causing insulation wear and shorts. 4. **Common Problem Areas**: - **Near the Firewall**: The wiring harness often passes through the firewall, and this area can be prone to wear and tear. - **Under the Dashboard**: Check under the dashboard for any loose connections or damaged wires. - **Near the Engine**: Heat and vibration can cause wiring issues around the engine bay. 5. **Use a Multimeter**: If you have access to a multimeter, you can check for continuity and isolate the short. Disconnect the battery and use the multimeter to check for continuity between the fuse terminal and ground. 6. **Inspect Grounds**: Ensure all ground connections are secure and free of corrosion. A bad ground can cause various electrical issues. 7. **AC Relay**: Check the AC relay for any signs of damage. Sometimes a faulty relay can cause short circuits. 8. **Professional Help**: If you’re unable to find the short yourself, it may be worth taking the car to a professional. They have specialized equipment that can make diagnosing electrical issues easier. To systematically diagnose the issue: 1. Disconnect the battery. 2. Replace the fuse. 3. Disconnect the AC components one by one (compressor, switch panel, etc.) and check if the fuse blows each time you reconnect the battery. 4. When the fuse stops blowing after disconnecting a particular component, you have likely found the section of wiring or component causing the issue. I hope these tips help you narrow down the problem. Good luck with your repairs! If you need further assistance, feel free to ask.

[@Daniel-cu4ew]

How do you lock the crankshaft when you tighten the crankshaft gear. The tool doesn't fit, does it?

[@SanuMotorswithCharlie]

Resolving timing issues and dealing with error code P0341 on a VW Polo 1.2L engine involves several steps, particularly if you are replacing the timing chain. Here's a detailed guide on locking the crankshaft and using the impact gun: ### Tools and Materials Needed: - Crankshaft locking tool (specific for VW Polo 1.2L) - Camshaft locking tool - Torque wrench - Impact gun - New timing chain kit (including gears, guides, and tensioner) - Socket set and ratchets - Screwdrivers - Pliers - Gloves and safety goggles ### Steps to Lock the Crankshaft: 1. **Preparation:** - Park the car on a level surface and ensure it is in gear with the parking brake engaged. - Disconnect the battery to prevent any accidental electrical shorts. 2. **Access the Timing Chain:** - Remove any components obstructing access to the timing chain cover, such as the engine cover, belts, and pulleys. - Remove the timing chain cover carefully. 3. **Align Timing Marks:** - Rotate the crankshaft to align the timing marks on the crankshaft and camshaft. This step ensures that the engine is at Top Dead Center (TDC) on cylinder 1. 4. **Lock the Camshaft:** - Use the camshaft locking tool to lock the camshaft in place. This tool is typically inserted into a designated slot on the camshaft to hold it steady. 5. **Lock the Crankshaft:** - To lock the crankshaft, locate the appropriate hole or slot on the engine block where the crankshaft locking tool is inserted. This tool prevents the crankshaft from moving while you work on it. - If the tool doesn’t fit correctly, double-check you have the correct tool for your engine model. Sometimes, aftermarket tools may not fit precisely, and a genuine or high-quality tool is recommended. 6. **Removing the Crankshaft Bolt:** - Use an impact gun to remove the crankshaft bolt. The locking tool should hold the crankshaft in place firmly enough to allow the bolt to be removed without rotating the crankshaft. ### Installing the Timing Chain: 1. **Remove the Old Timing Chain:** - Once the crankshaft and camshaft are locked, you can safely remove the old timing chain along with the gears, guides, and tensioner. 2. **Install the New Timing Chain:** - Follow the manufacturer's instructions for installing the new timing chain kit. Ensure that the timing marks on the new gears are aligned correctly with the marks on the engine block. 3. **Tightening the Crankshaft Gear:** - Place the new crankshaft gear and tighten the bolt. Use a torque wrench to tighten the crankshaft bolt to the specified torque setting provided by the manufacturer. The crankshaft locking tool should hold the crankshaft in place while you apply the necessary torque. 4. **Reassemble the Engine:** - Reassemble all components in the reverse order of removal. Ensure all bolts and components are securely tightened and reconnected. 5. **Double-Check Timing:** - Before closing up the engine, double-check that all timing marks are correctly aligned. Rotate the engine manually using a ratchet on the crankshaft pulley to ensure there is no interference and that the timing marks stay aligned through several rotations. 6. **Final Steps:** - Reinstall the timing chain cover, pulleys, belts, and any other components you removed. - Reconnect the battery and start the engine to ensure it runs smoothly and the error code P0341 is resolved. ### Tips: - Always refer to the service manual for your specific VW Polo model for detailed instructions and torque specifications. - Ensure that you have the correct locking tools for your engine to avoid any fitting issues. - Safety first: wear gloves and safety goggles while working on the engine. If you continue to experience issues with the crankshaft locking tool not fitting, consider consulting with a professional mechanic or acquiring a different brand or model of the tool designed specifically for your engine type.

[@therealspixycat]

You unlocked the two camshaft locks just to see how much the cams are out of alignment compared to the crank? Just to verify your analysis?

[@SanuMotorswithCharlie]

Thank You for comment

[@martinguiver9767]

yep thats right, always fix the crankshaft with the alignment tool and then micro adjust both cams and align with the setting tool. When the chain stretches and rails wear the cams will always be out of sink. Never more than a ten degree angle, if its out further then you have real trrouble!@@SanuMotorswithCharlie

[@SanuMotorswithCharlie]

You're absolutely right; the key to resolving timing issues in the VW Polo 1.2L engine, especially with error code P0341 (Camshaft Position Sensor A Circuit Range/Performance), lies in precise timing adjustments and correct tool usage. Here's a breakdown of the process and some important considerations: ### **Resolving Error P0341 and Timing Chain Replacement** 1. **Diagnosis of Error P0341**: - Error P0341 typically indicates a mismatch between the camshaft and crankshaft positions, often caused by a stretched timing chain, worn chain guides, or an issue with the camshaft position sensor. - Start by verifying the timing chain condition. Look for signs of stretch, wear on the tensioners, and rail damage. Even slight stretch can cause synchronization issues, leading to the error code. 2. **Using the Right Tools for Alignment**: - Proper alignment tools are essential for setting the crankshaft and camshaft positions correctly. Always start by locking the crankshaft with the alignment tool. This ensures that the crankshaft is in its proper position before adjusting the camshafts. - After securing the crankshaft, use the camshaft alignment tools to set both camshafts in their correct positions. Fine-tuning may be necessary to ensure that both cams are perfectly synchronized. 3. **Timing Chain Replacement**: - When the timing chain stretches, it causes the camshafts to fall out of sync, usually leading to a slight offset. This misalignment is critical because even a 10-degree deviation can signal potential major engine issues. - Replace the timing chain, guides, and tensioners as a complete set to avoid future misalignment problems. Ensure that the new components are of high quality, as the integrity of the timing system heavily relies on them. 4. **Fine-Tuning the Cams**: - Micro-adjust the camshafts using the cam setting tool until the timing marks line up perfectly. Even after installing the new chain, it's crucial to ensure that everything aligns according to the manufacturer's specifications. 5. **Checking the Timing with a Scanner**: - After the physical timing adjustment, use a diagnostic scanner to check the camshaft and crankshaft position sensors' readings. They should be within the acceptable range as per the vehicle's specifications. 6. **Final Adjustments and Test Drive**: - Once everything is aligned, reassemble the components, clear the error codes, and perform a test drive. Monitor the engine's performance and check if the error code reappears. Your insight about ensuring the crankshaft is fixed and then micro-adjusting both cams is spot on; it’s the meticulous approach that prevents errors and keeps the engine running smoothly. Every degree counts when it comes to engine timing, and maintaining that precision can save you from more severe mechanical issues down the road. Keep up the excellent work at SANU Motors!

[@therealspixycat]

@sanumotorswithcharlie agreed. The point is, which is not mentioned in this list, is that the ecu pcm is able to deal with a certain amount of stretch but but, and this is the important bit, the ecu will at some point not be able to correct it because the crank and cam shaft are so far of that it will conclude that there must be or the has to be something wrong with the crankshaft position sensor. This is partly also confirmed in your list is that you must make sure that the timing must be spot on when replacing. Being one teeth out on the crank is possibly more out of sync than your worst stretched chain. Cheers

[@ariantaria2065]

Quite a lot of work for that small engine,,great tutorials, I enjoy watching your videos, cam belts/ chains replacement,,many thanks

[@SanuMotorswithCharlie]

Thank you for your kind words! It's wonderful to hear that you find the tutorials helpful and enjoyable. Indeed, even small engines can require a lot of attention and care when it comes to maintenance tasks like cam belt or chain replacement. Proper tutorials can make all the difference in tackling these jobs with confidence and success. If you have any more questions or need further assistance, feel free to ask. Keep up the great work with your automotive projects!

[@MS-fj9dn]

What kind of diagnostic tool is he using here? Can someone tell me, or share, because im out looking for a diagnostic machine at the moment. And i want to buy the one you are using here, just need name ^^ 2:16

[@SanuMotorswithCharlie]

From the description, it sounds like the person is using a **Mactool** brand diagnostic computer, but they find it somewhat limited and only use it as a backup. They are recommending **Autel** scan tools as a better option compared to the Mactool. Autel is a popular brand known for producing reliable and high-quality automotive diagnostic tools. Some of their popular models include the **Autel MaxiSys MS906** and **Autel MaxiCOM MK808**, which are suitable for various diagnostic tasks across different vehicle brands. If you're looking for a solid diagnostic machine, considering Autel is a great idea based on this recommendation.

[@barriehunt8860]

Why have you got the cams locked when loosening cam sprockets that a sure way to break camshafts have you got torque wrenches at your garage

[@barriehunt8860]

I always fit crank pulley To aline oil seal before tightening front cover bolts

[@SanuMotorswithCharlie]

Locking the cams when loosening cam sprockets is a critical step to ensure that the camshafts and associated components remain in their proper position and to prevent any unintended movement that could lead to damage. However, it's important to do this carefully to avoid putting excessive stress on the camshafts, which could indeed lead to breakage. Here’s a general guide to handling camshafts and cam sprockets properly: 1. **Proper Locking of Cams:** - Use a camshaft locking tool that is designed specifically for your engine model. This tool holds the camshafts in place and ensures they don’t move when you loosen or tighten the sprockets. - Avoid applying excessive force when locking the camshafts. The tool should fit snugly without over-tightening. 2. **Loosening Cam Sprockets:** - Ensure that the engine is in the correct timing position before you start loosening any sprockets. - Use a breaker bar or an appropriate tool to apply gradual and even pressure when loosening the sprocket bolts. - Avoid any sudden jerks or movements that could transfer stress to the camshaft. 3. **Use of Torque Wrenches:** - Always use a torque wrench to tighten the sprocket bolts to the manufacturer's specified torque settings. Over-tightening can cause undue stress on the camshaft, while under-tightening can lead to slippage and timing issues. - Calibrate your torque wrench regularly to ensure its accuracy. ### Torque Wrenches in the Garage: Yes, a professional garage should have a variety of torque wrenches available to cover different torque specifications required for various components. These wrenches ensure that bolts are tightened to the precise specifications, preventing damage from over-tightening and ensuring the integrity of the assembly. - **Types of Torque Wrenches:** - **Click Type:** These provide an audible click and a slight release of tension when the set torque is reached. - **Beam Type:** These use a scale and pointer to indicate torque. - **Digital Type:** These provide a digital readout and often an audible alert when the set torque is reached. Using the correct tools and procedures helps maintain the integrity of the camshafts and other engine components during maintenance. If you need specific advice or have a particular issue, providing more details about the vehicle and the exact procedure being followed can help in giving more precise guidance.

[@barriehunt8860]

Why have you got the cams locked when loosening cam sprockets that a sure way to break camshafts

[@barriehunt8860]

Don’t you use torque wrenches at your garage

[@SanuMotorswithCharlie]

Thank You very much for sharing your knowledge, it is very helpful for other viewers,,

[@thebigbowler]

What was the rough cost to have this work done please?

[@SanuMotorswithCharlie]

we need more details, please contact us, thank you

[@martinguiver9767]

@@SanuMotorswithCharlie I'm just about to do my sons car and for an idea got a local garage to quote, Wait for it.........£710.00 Now that's having a laugh isn't it! Should be £4-500.00 depending on timing chain kit used. I always use Febi and thats about £180.00 and that would be a £500-540 price but its a German quality part as opposed to the £85 option! Euro car parts mid range/mid price but ok for 10 year old cars! £120 ish

[@martinguiver9767]

Oh! just so you know. These engines are basically scrap if the timing chain goes, Hard to get parts as VW only replace full cylinder heads and you can't rebuild the bottom end if that's damaged so it could well be a replacement engine or at minimum a huge repair bill so don't keep driving hoping for the best. It'll probably fail on start up. if you haven't had an EML light but on a cold start the engine sounds rattle-y like a push bike changing gear but settles quickly and doesn't do it again that day then you're heading for a cam chain kit..... do it sooner rather than later!

[@thebigbowler]

@martinguiver9767 thanks for the feedback. To be honest, I am not going to bother, the car isn't worth the money or trouble.

[@SanuMotorswithCharlie]

noted

[@hasanmayavar4435]

عالی بود 🎉🎉🎉

[@SanuMotorswithCharlie]

😊 Thank you so much for your support and for being a part of our amazing community! It means the world to us. 🌟 If you’re interested in Sanu Motors branded items like T-shirts, caps, and more, check out our shop at www.sanumotors.stores Don't forget to follow us on social media for the latest updates and exclusive deals: Facebook: facebook.com/sanumotors Instagram: instagram.com/sanumotors Thanks again for being part of our community! 🚗💨