該車主在行駛中若大吹有時候會有check engine燈亮， 順順開3000多轉開冷氣會跳CH燈.再開一段路就熄滅了

在行駛時就會發生動力不足等等因素，這問題困擾車主很久。遲遲無法解決。

這時找上我之後將問題說明一次後，我想若有顯示check 引擎燈且又是原廠電腦的話應該會有故障碼

當然此時我店裡的檢測電腦並沒有對應這97年的ODB檢測電腦，但是以那時後電腦而言會有自診接頭以閃碼方式進行故障碼顯示

所以參考

http://www.troublecodes.net/subaru/

Subaru Trouble Code Info

Retrieving Trouble Codes 96 & later are OBD2 systems

There are self-diagnositic connectors on all models, when connected with the key ON (engine off), flash trouble codes on the LED light of the oxygen moniter of the ECU.

Images used with permission Copyright © 2001 ALLDATA LLC.

• The connectors are under the steering wheel, to the left of the module on most models.
• On carberated and SPFI injected 89 models,the test connectors are located on the engine side/driver’s side of the firewall.
• Imprenza models have the ECU and test connectors located behind the right side of the dash, instead of the left.
• On SVX models the connectors are located behind the driver’s side kick panel.

Test Modes

• • With neither test connector connected and the key ON(not running), the codes will display codes related to starting and driving.
  • With only the “Read Memory” connector connected, historic codes will be displayed.
  • With only the “Test Mode” connector connected, a technician can perform dynamic tests.
  • The last mode is for clearing codes.(See Clearing Codes)

    Reading Trouble Codes

The codes are displayed as pulses of the LED mounted on the module. Long pulses (1.2 seconds) indicate tens and the short pulses (.2 seconds) indicate ones. Pulses are seperated by .3 second puses and codes are seperated by 1.8 second pauses. NOTE:on 89 MPFI models, the Oxygen Moniter light and ECU are mounted under the rear package shelf and are only accessible from the trunk. On some later models the Check engine lamp and O2 monitor lamp flash the code(s) corresponding to the faulty part. The long segment (1.2 sec on) indicates a “ten”, and the short segment (0.2 sec on) signifies a “one”.

• 90 models – Trouble codes on the Justy are viewed on the Oxygen Moniter light, all other models the codes can be viewed on either the Oxygen Moniter light or the MIL (check engine light).
• 95 Imprenza and Legacy models have OBD2 systems and require a scanner,but some basic codes can be retreived using the flashing MIL method.

當然因為不需要用動態故障碼

所以只要用靜態故障碼

所以查出故障碼為

看起來含氧有問題，當然連節氣門也有問題，這樣要解決方式有兩個就是更換該問題的元件。但是這些元件說真的以目前故障方式而言也只是偶而發生或者是大吹時發生

所以這樣解決方式或許更換後將之解決。但是之後會有問題出來就不太知道。幸好另一方式因為此車有改裝電腦可以提供，所以建議更換改裝電腦可以將此訊號給予解除

經車主同意後更換

原廠 STI電腦，將之移除

更換Power FC電腦

使用我之供油之內容，逕行必要的修正後，開始怠速學習（因為很久沒用）

怠速學習完畢後，引擎運轉很穩定的指向1000rpm（包括開冷氣與電器負載）

引擎燃燒後的結果，噴水，代表燃燒狀況良好（去監理站檢測排氣也OK）

使用TD-04窩輪

沒得好拍，只好拍後面的經典97-99後燈

解決之後，車主也開至今也沒有什麼大問題。