Swagger0302
Ruckling and clicking during the cold start of my Audi Q7
(Translated from German)
Summary of the thread
The conversation revolves around a 2015 Audi Q7 experiencing shuddering and clicking noises during cold starts. The shuddering could be due to worn engine mounts, while the clicking might stem from hydraulic lifters or a loose heat shield. An error code P0005 related to the fuel shut-off valve suggests irregular fuel delivery, potentially contributing to the shuddering. Addressing the valve issue is recommended, and if the clicking persists, further inspection of other components may be necessary.
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15 comment(s)
Swagger0302 (community.author)
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Start by checking the engine oil level and condition, as low or old oil can affect hydraulic lifters and cause noise. If the oil level is fine, consider having the lifters inspected by a professional. For the injectors, you can use Carly to read fault codes, but it might not provide detailed injector diagnostics. Let me know how it goes or if you have further questions!
Hey thanks for the quick feedback. The oil was changed about 3 weeks ago, so that's correct. I understand the noises could be coming from the hydraulic lifters? No errors were found when reading the fault memory yesterday. Unfortunately, I only find one cylinder bank in the Carly app for my model, or am I overlooking something?
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CarlyMechanic
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Hey thanks for the quick feedback. The oil was changed about 3 weeks ago, so that's correct. I understand the noises could be coming from the hydraulic lifters? No errors were found when reading the fault memory yesterday. Unfortunately, I only find one cylinder bank in the Carly app for my model, or am I overlooking something?
Since the oil was recently changed, it's less likely to be the cause. The shudder during cold start could also be related to engine mounts, which can harden over time and cause vibrations. Check the condition of the engine mounts for any visible wear or damage. If the issue persists, it might be best to have a mechanic inspect it further. Let me know if you need more help or have any questions!
Swagger0302 (community.author)
community_quotation:
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Since the oil was recently changed, it's less likely to be the cause. The shudder during cold start could also be related to engine mounts, which can harden over time and cause vibrations. Check the condition of the engine mounts for any visible wear or damage. If the issue persists, it might be best to have a mechanic inspect it further. Let me know if you need more help or have any questions!
Okay, thanks. Can the engine mounts be checked independently? What else could be causing the clicking noise during cold starts? Since it goes away after about 3-4 minutes and doesn't always occur?
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CarlyMechanic
community_quotation:
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Okay, thanks. Can the engine mounts be checked independently? What else could be causing the clicking noise during cold starts? Since it goes away after about 3-4 minutes and doesn't always occur?
You can visually inspect the engine mounts for cracks or excessive wear, and check for any unusual movement by gently rocking the engine with the car off. As for the clicking noise, it could be related to the exhaust system, such as a loose heat shield or an exhaust leak that seals as the engine warms up. If you're unsure, it's advisable to have a professional mechanic take a look to ensure safety. Let me know if you have more questions or need further assistance!
Swagger0302 (community.author)
Okay, so the clicking could be my hydraulic lifters or a heat shield, do I understand that correctly? And the jerking/shaking could be a motor mount?
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Swagger0302 (community.author)
Okay, so the clicking could be my hydraulic lifters or a heat shield, do I understand that correctly? And the jerking/shaking could be a motor mount?
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Swagger0302 (community.author)
Okay, so the clicking could be my hydraulic lifters or a heat shield, do I understand that correctly? And the jerking/shaking could be a motor mount?
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CarlyMechanic
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Okay, so the clicking could be my hydraulic lifters or a heat shield, do I understand that correctly? And the jerking/shaking could be a motor mount?
Yes, that's correct. The clicking noise could be from the hydraulic lifters or a loose heat shield, while the shaking might be due to worn engine mounts. If you're not comfortable checking these yourself, it's best to have a professional mechanic inspect them to ensure everything is safe and functioning properly. Let me know if you have any other questions!
Swagger0302 (community.author)
community_quotation:
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Yes, that's correct. The clicking noise could be from the hydraulic lifters or a loose heat shield, while the shaking might be due to worn engine mounts. If you're not comfortable checking these yourself, it's best to have a professional mechanic inspect them to ensure everything is safe and functioning properly. Let me know if you have any other questions!
Okay, could it not be an injector? Since I don't have any errors in the fault memory or an error in the on-board computer?
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CarlyMechanic
Start by checking the engine oil level and condition, as low or old oil can affect hydraulic lifters and cause noise. If the oil level is fine, consider having the lifters inspected by a professional. For the injectors, you can use Carly to read fault codes, but it might not provide detailed injector diagnostics. Let me know how it goes or if you have further questions!