If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
A4 1.8T -2000 & MAF sensor
Hi,
MAF sesnsor problems are various. Typically there isn't any trouble codes when MAF sensor goes bad and many other problems seems the same, like: bad TB, O2 sensor, injectors, vacoom leaks in hoses etc.... In my case these symptoms came when I disconnected the battery -> ECU's memory of TB adjustment and learned values of engine parameters where cleared, the TB adjustment didn't seem to succeed. the idle was wery poor and when driving the acceleration was awful. The solution was bad MAF sensor. The ECU couldnt relearn the values because it didn't get any reasonable values from MAF sensor. So why that happened after ECU was restarted and before that the car was quite driveable... -I think reason was that when the sensor was getting bad little by little the ECU adjusted oneself to these wrong values and it could somehow manage it. When I replaced the MAF sensor the car was almost better than new. Idle was constant and acceleration good and smooth. So the lesson was that if you hawe any kind of problems with idle and/or the car is jerky but you don't get any trouble codes or check engine light, CHECK THE MAF SENSOR. It's easy to notice. Just take of the MAF sensor and look at it agens light, the surface of the sensor inside the tube have to look like mirror when it's OK. If there is any dots like fly's **** that MAF sensor is gone. -K03 |
Ads |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
156 `speed sensor' | Malcolm Osborne | Alfa Romeo | 0 | October 22nd 04 11:58 PM |
cruise control for 156 1.6TS 2000 | Guus Obelink | Alfa Romeo | 3 | October 13th 04 09:25 AM |
spark plus type GTV 2000 1974 | Tal | Alfa Romeo | 3 | October 8th 04 02:13 PM |
156 engine running poor at about 2000 rpm | Guus Obelink | Alfa Romeo | 2 | July 19th 04 04:41 PM |
Alfa 166 -Rear view mirror sensor ?? | DJ | Alfa Romeo | 5 | July 19th 04 12:05 PM |