jgjurchinoski

Thank you so much for the reply Clifford! As I have become sort of a DIY guy, can you please advise me if you have any experience on how can I test these three areas? For #1 I think I need a tool that somehow connects to the engine via the hole for the glow plugs. For #2 I did not know that my car has two fuel pumps. Maybe the second pump is the tandem pump or am I completely in the wrong here? For #3 can you please (if you know) explain to me where the temperature sensor is located? And lastly, yes the heater plugs are the next step for me. As I have the car for almost 5 years now, I think it is time to change them even though there is no message that suggests I should do so.

Hello all, I am new to the forum. I have an Audi A3 2.0 TDI for 4.5 years now. Since I bought the car it had a rough start, but in the recent period the problem got much worse. At one point it cranked for almost 12 seconds on a cold start. I have to point out that this cold start was done one day after a shop replaced the seals on the tandem pump.(The outside temperature whilst the cold start was around 5 degrees Celsius.) After that, I had the brushes replaced on the starter. The second video shows a cold start after the replacement of the brushes. (Keep in mind that this video was shot on the 2nd of January 2021 but the temperature was around 10 degrees Celsius.) The shop tested the Injection Quantity Deviation of the 4 injectors and 3 of them were only by 0.4 out of the 0 mark and only one injector was at 1.30mg/str. which is also in the acceptable range from -2.8 to 2.8 mg/Str. There is no check engine light on the dash nor some message on the diagnostic tool indicating that the glow plugs are faulty. One mechanic had an idea that there is a sensor that tells the plugs that the engine is always hot, so that they do not heat up on a cold start. But I don't think that is the problem. On the last two videos I start the engine when it had been running for about 5-6 minutes after the brushes on the starter were replaced. My concern is that even when the engine is on full working temperature, the start is rough, it cranks a little before starting. As I don't have any experience I am asking for help and I want to say thank you in advance for any tips or similar problems from fellow Audi drivers. 917949061_Coldstartaftertandempumpsealsreplacement.mp4 903004803_Coldstartafterstarterbrushesreplacement.mp4 01.01.2021 start after 6 mins of driving around test 2.mp4 01.01.2021 start after 6 mins of driving around test 1.mp4