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S60 2001 Cold Start Rough İdle

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  #1  
Old 03-10-2021, 09:18 AM
Batuhan Alpay Özcan's Avatar
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Default S60 2001 Cold Start Rough İdle

Hey millet....

Elimde bir şeye ihtiyacım var ... Soğuk çalıştırmada sorun yaşayan bir 2001 S60 T5'im var. Soğuk, Phoenix'te çok sıcak olduğu için gevşek bir terimdir, ancak arabayı bir gecede oturduktan sonra veya bütün gün ofisimde oturduktan sonra çalıştırdığımda, motor çılgın gibi fışkırıyor ve çoğu silindirde teklemiyormuş gibi titriyor . Bir süre bu şekilde boşta kalmaya devam edecek, bu yüzden yapmaya eğilimli olduğum şey kontağı kapatıp yeniden başlatmak. Çevresinde ikinci kez yanlış bir şey yokmuş gibi ateşleniyor. Bunu yaptıktan sonra bir işlenmemiş yakıt kokusu fark ettim, ancak bunun sadece motorun ilk başta doğru şekilde ateşlememesinden kaynaklandığını düşünüyorum. Arabayı yaklaşık 6 aydır kullandım ve son 2 yıldır bu sorunu yaşıyorum. Kilometre bu noktada kabaca 250 bin. Herhangi bir fikri olan var mı? Coil , Coil installation , map,maf changed

Şimdiden teşekkürler!
 

Last edited by Batuhan Alpay Özcan; 03-10-2021 at 09:25 AM.
  #2  
Old 03-11-2021, 12:21 PM
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based on your note that this is worse after the car has been sitting for a while suggest you have a fuel pressure issue at the fuel rail. This can be caused by a leaky injector or a pressure sensor/pressure regulator that has a vacuum diaphram. If you can, get a fuel pressure gauge and attach to the valve on the end of the rail, measure the cold engine pressure (engine off) then measure while starting and idling, finally turn off the engine and see what the pressure stays at or if it slowly declines.
 
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Old 03-12-2021, 01:40 AM
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Originally Posted by mt6127
based on your note that this is worse after the car has been sitting for a while suggest you have a fuel pressure issue at the fuel rail. This can be caused by a leaky injector or a pressure sensor/pressure regulator that has a vacuum diaphram. If you can, get a fuel pressure gauge and attach to the valve on the end of the rail, measure the cold engine pressure (engine off) then measure while starting and idling, finally turn off the engine and see what the pressure stays at or if it slowly declines.
When I turned it off and on, I couldn't understand why it was all right ?
 
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Old 03-12-2021, 02:46 PM
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if the car behaves differently when you start the car then turn the car off and restart, I'd start to think about sticky relays or other switch sensors that may be reset by turning off the key. Possibly a sticky idle air valve?
 
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Old 03-19-2021, 10:03 AM
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Originally Posted by mt6127
if the car behaves differently when you start the car then turn the car off and restart, I'd start to think about sticky relays or other switch sensors that may be reset by turning off the key. Possibly a sticky idle air valve?
I'm getting the error ecm-644a I changed the valve but it's still the same
 
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