총 비용
-
공임
-
부품비
-
소요 시간
-
2026. 6. 30. 작업
Audi A4 2007 2.0T boosts but poor performance, fuel economy
I wouldn't rule out a bad MAF so quickly - there was a generation of VW and AUDI MAFs that slowly went south without any indication from the ECU that they were doing so and IIRC the ECU managed to compensate for the dying MAF for a while. Also, if the ECU thinks you might be boosting at 15psi and using a conventional gauge suggests you're boost 7psi, you either have a massive boost leak or a duff sensor. The fact that the fuel trim it +5 (what unit is that, percent?) and not negative suggests to me that you get more air into the engine than is accounted for and the ECU is adding fuel to get the fuel ratio back to stoich. For starters I'd pull the plugs and check if they look like the engine is running rich, lean or normal. That should give you at least a basic idea if the problem is upstream or downstream of the engine. Basically the idea is that if the plugs look like the engine is running really rich, you might have a problem with the O2 sensor(s), if they look like the engine is run
출처
이 사례는 Stack Exchange에서 수집한 데이터입니다.
신뢰도 2.5점(참고용) — 출처 소스의 전문성/검증구조를 기준으로 산정된 점수이며, 정확성을 보장하지 않습니다.
원문 보기 ↗차량 정보 없음
2003 Hyundai Santa Fe will start then die. Then it will not start. After pumping the accelerator or holding on the floor and returning later it will start. Nothing codes out. This happens probably 15% of the time. Any ideas?
차량 정보 없음
A friend has an older Miata that was improperly stored for at least three years. Most of the time, it was not garaged. The gas is old, the battery is dead, it has not been started. It was probably parked without an oil change. He is looking to do the minimum to get this sellable, so the primary concern is the initial startup and the brakes. What would be recommended , especially regarding that first engine startup?
차량 정보 없음
I am planning to start using seafoam in my gas and oil ,how often should you a add it an how much.The label isn’t to clear about it.
차량 정보 없음
I’ve asked a few mechanics and DIYers this question and so far no consensus. Let’s say you’re 1000 miles away from next SCHEDULED oil change, and you’re about to leave on a 2000 mile road trip. Would you choose to change your oil 1000 miles early before the trip, or 1000 miles late after the trip?