Hello.
First of all sorry my english ill try my best:
I had the same problem and engine light always On, in my vectra b 16v 1.6 from 1996 engine code x16xel.
So, i start changing all thing as sensors, leads, plugs , egr and the problem was always coming up. So, after 3 or 4 months i was struggling with this prob. I went to a friends garage and i ask for a diagnostic check. I got very surprised. When we plug the diagnostic machine, after 15 minutes ( engine runing) just come up the temperature on the diagnostic interface, as -40 ( minus 40)! wow... obvious on the clocks my temperature gauge was showing normal. So, we just sort this very easy and quick for about £6.50 and 2 minutes. It was the Coolant sensor ( dunno exactly the name in english), but u can check this links and see what i mean. Its the blue sensor on the pictures. After change it all this problems went away. Just had to clean the Ecu errors, but the car is runing gr8 again.
Obvious this sensor was sending the wrong info to the Ecu, as it was reading -40 the engine was injecting more fuel and air then actualy need it, resulting in the crazy idle and going off all the time. I could have save much money if i had started by the cheap things.
Just check the links:
www.jvn.ind.br/astra-18-i-16v-20-i-16v-92omega-b-c...l
AND
img152.imageshack.us/img152/338/z16xeenginehr7.jpg
So simple and really easy. it works for me. Hope this help someone and again im sorry my english . Good luck
Toxa007
Edited by Toxa007 on 08/05/2011 at 06:24
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