F3r_garcia

Cold start problems with Audi RS6

Good evening, I have an Audi RS6 that is having a problem starting after driving it and letting it cool down. When I try to start it again, the engine cuts out and I need several attempts to get it started. Curiously, if I leave it overnight, it starts without any problems. I have performed driving logs and the high-pressure fuel pumps seem to be working correctly. Should I rule out the fuel pumps as the cause of the problem? I appreciate any advice or similar experiences. Thank you.

(Translated from Spanish)

An Audi RS6 is experiencing cold start problems, particularly after the engine has been driven and allowed to cool down, though it starts fine after being left overnight. The high-pressure fuel pumps have been checked and appear to be functioning correctly, suggesting they may not be the cause. Potential causes include a faulty crankshaft position sensor or a coolant temperature sensor, both of which can affect starting when the engine is warm. Inspecting these sensors for damage or loose connections and testing them with a multimeter are recommended solutions.

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5 comment(s)

Check the crankshaft position sensor. A faulty sensor can cause starting issues when the engine is warm but may work fine when the engine is cold. Inspect the sensor for any visible damage or loose connections. If needed, test it with a multimeter to ensure it's functioning correctly. Let me know how it goes or if you have any further questions.

Hello, I have the same problem. After a few minutes, it starts after 3 or 4 tries. Help!

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Hello, I have the same problem. After a few minutes, it starts after 3 or 4 tries. Help!

Check the coolant temperature sensor. A faulty sensor can send incorrect signals to the engine control unit, affecting the starting process when the engine is warm. Inspect the sensor and its connections for any signs of damage or corrosion. If necessary, test it with a multimeter. Let me know if this resolves the issue or if you have any further questions.

community_quotation:
community_author_wrote_on
Check the crankshaft position sensor. A faulty sensor can cause starting issues when the engine is warm but may work fine when the engine is cold. Inspect the sensor for any visible damage or loose connections. If needed, test it with a multimeter to ensure it's functioning correctly. Let me know how it goes or if you have any further questions.

F3r_garcia hi how did you solve your problem ??? I'm having the same problem as you..

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community_quotation:
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F3r_garcia hi how did you solve your problem ??? I'm having the same problem as you..

Check the ignition coils. A failing coil can cause intermittent starting issues, especially when the engine is warm. Inspect the coils for any visible damage or wear, and consider testing them to ensure they are functioning properly. Let me know if this helps or if you have any further questions.

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AUDI

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RS6