Audi a4 2.5 tdi loosing power on long journey

[Audiaudi]

I love my Audi but this is becoming a pain after a long journey the car looses power foot to the floor although it revs high no movement of the car.

I had two codes come up one was voltage too high on MAF so replaced and that fixed the management light but the symptoms above we're the same. The second was EGR control limit surpassed reset this too. Now I have no management lights but still have the problem.

Any suggestions and advise will be appreciated. Oh when the car cools down it seems to regain power until the next journey.

 

[abyrne153]

Either clutch slip if a manual or transmission slipping if an auto. Which transmission do you have ?

 

[pauldazzle]

If it's an auto a fluid change may solve it. When ATF gets old it becomes thin & once hot even thinner causing the sort of problem you describe. If you have a manual then the clutch is most likely at the end of it's life.

 

[Audiaudi]

Either clutch slip if a manual or transmission slipping if an auto. Which transmission do you have ?

The he car is a auto

 

[Audiaudi]

If it's an auto a fluid change may solve it. When ATF gets old it becomes thin & once hot even thinner causing the sort of problem you describe. If you have a manual then the clutch is most likely at the end of it's life.

Hi Paul thanks for your help - I would just like to understand why thinner ATF would loose power what would the role be in terms power or clutch plate if any?

 

[TheDriver]

Not sure how to explain it, but in my mind if your ATF is too thin then its ability to transmit force within the torque convertor is decreased therefore causing loss of power within the transmission system an ultimately resulting in the car not being able to accelerate as quickly. Hope that makes sense.

Try an ATF and filter change first. Check your old oil and filter for any debris or flecks as this may allude to deeper-rooted transmission issues.

 

[Audiaudi]

Not sure how to explain it, but in my mind if your ATF is too thin then its ability to transmit force within the torque convertor is decreased therefore causing loss of power within the transmission system an ultimately resulting in the car not being able to accelerate as quickly. Hope that makes sense.

Try an ATF and filter change first. Check your old oil and filter for any debris or flecks as this may allude to deeper-rooted transmission issues.

Thank you for your response - seems like an easy place to start and will have the ATF changed will keep The board posted on a solution.

 

[Audiaudi]

The power was lost due to to pipes being incorrectly installed. Switched pipes which resolved the problem. The 2 pipes were switched to the solinoid after the EGR.

 

[TheDriver]

The power was lost due to to pipes being incorrectly installed. Switched pipes which resolved the problem. The 2 pipes were switched to the solinoid after the EGR.

Awexome! Cheap and simple fix and you didn't have to change the ATF. Marvelous news

 

[MooLard]

Hooray! Well done for thinking to backtrack on the last time you touched the engine.

 

[Audiaudi]

Had to take it to a specialist who checked the maf and the EGR again even tried a land rover solonoide. But the guys at Autocraft helped get this back to normal now runs like a dream. The most hardest problems to fix are usually caused by man.

Thank you for your support and help.