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Could be a sticky IACV. Clean it out with carb cleaner and if that doesn't help, reset the ECM to see if resetting the adaptive values fix the problem. If all else fails, replace the IACV.
 
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Unplug the battery for 10min and hold the brake for a few minutes to drain residual power in the system. From a cold start let the engine idle for 15min then drive carefully using less than 30% throttle on the highway for 10-20miles. This will relearn adaptive values for everything including your IACV.

Did you buy a genuine Hyundai IACV or a cheap knock off part?
 
Discussion starter · #6 ·
Unplug the battery for 10min and hold the brake for a few minutes to drain residual power in the system. From a cold start let the engine idle for 15min then drive carefully using less than 30% throttle on the highway for 10-20miles. This will relearn adaptive values for everything including your IACV.

Did you buy a genuine Hyundai IACV or a cheap knock off part?
thank you,
I did the operation by installing the IACV in a different car, but it still did not work.
 
Could also be a sticky throttle body or the throttle cable or cruise control cable too tight or binding. Try to clean out any carbon deposits in the throttle body, especially right around the edges of the butterfly valve. It's much easier if you take it off the car and let it soak with some carb cleaner.
 
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Discussion starter · #8 ·
[QUOTE = "peachferrari, gönderi: 5405650, üye: 5662"]
Yapışkan bir gaz kelebeği gövdesi veya gaz kelebeği kablosu veya hız sabitleyici kablosu çok sıkı veya bağlayıcı olabilir. Gaz kelebeği gövdesindeki, özellikle de kelebek vananın hemen kenarlarındaki karbon birikintilerini temizlemeye çalışın. Arabadan çıkarırsanız ve biraz karbonhidrat temizleyici ile ıslatırsanız çok daha kolay.
[/ALINTI]
Cevabınız için teşekkür ederim.
Seyir kontrol kablosu nerede?
 
Discussion starter · #9 ·
[QUOTE = "chase206, gönderi: 5405648, üye: 20506"]
Aküyü 10 dakika boyunca çıkarın ve sistemdeki kalan gücü boşaltmak için freni birkaç dakika basılı tutun. Soğuk bir çalıştırmadan sonra motoru 15 dakika rölantide bırakın, ardından 10-20 mil boyunca otoyolda% 30'dan daha az gaz kullanarak dikkatli bir şekilde sürün. Bu, IACV'niz dahil her şey için uyarlanabilir değerleri yeniden öğrenecektir.

Orijinal bir Hyundai IACV mi yoksa ucuz bir parça mı satın aldınız?
[/ALINTI]
Bir şey soracağım, motorun soğuk olması gerekiyor mu?
 
Please use English with your responses. It's in the forum rules... and it makes it easier for us to answer without translating each response.

I will ask something, does the engine have to be cold?
It would be best if the engine is cold for the first startup after resetting the ECM. That way it gives the car a full cold to warm idle cycle to learn from.
 
Discussion starter · #11 ·
Please use English with your responses. It's in the forum rules... and it makes it easier for us to answer without translating each response.



It would be best if the engine is cold for the first startup after resetting the ECM. That way it gives the car a full cold to warm idle cycle to learn from.
I tried it when it was hot.

136934
 
Can you take a close up picture of the IACV? I want to see the part number and brand name. I know that Bosch makes a couple variants that may not be compatible with the Tiburon because they are hardwired backwards for the Porsche/Audi vehicles. I have an IACV at home from a Porsche that will bolt up and plug into my car, but it won't idle because the open and close wires are opposite.
 
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Discussion starter · #15 ·
Can you take a close up picture of the IACV? I want to see the part number and brand name. I know that Bosch makes a couple variants that may not be compatible with the Tiburon because they are hardwired backwards for the Porsche/Audi vehicles. I have an IACV at home from a Porsche that will bolt up and plug into my car, but it won't idle because the open and close wires are opposite.
[/ALINTI]
136954


We bought the product in this picture from a different car and it was the same problem.
 
Thanks for the follow up. That is actually a very common problem. because the connectors are identical except for their color.
 
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