Hello All,
This is a long story so please bear with me ?
I?m having problems with my Opel Vectra B Elegance 1,8 2002 EcoTec
The problem really started maybe 1 year ago. The Air conditioning is of Auto type (you select temp on the display and it then increases/decreases temp/speed of fan to get right temp inside car) It started with the air cond not auto regulating the fan it was running on full speed all the time. Was only possible to adjust temp. Then after some time it got worse and it was not possible to start the air cond at all it was always of.
I then found the ?control regulating unit? inside de venting duct (after fan) and there was one of the soldering points on the circuit board was bad. I re-soldered it and the fan started to operate on full speed again. I left it like this due to did not know how to fix it. Then maybe ½ year ago I noticed that some time the engine temp meter drops to 0 and then maybe goes to maximum. The speed of the movement of the meter indicates that it is false. Don?t think that engine temp can change that quickly.
This has happened now and then but after some time it goes to normal. Then some days ago when I was out driving all the speed and rpm meters went to 0 and after some seconds back to correct value. Then the fan started turning really slow (otherwise always on full speed) stereo (Opel original) was ?rebooting? many times and all the gauges went between 0 and correct reading. I thought that now there is some short circuit so that something is really draining the power from my battery. It was only about 500m to my destination so I decided to keep driving. When I turned in on the smaller road at my destination the rpm meter and speed meter locked at there current position, rpm was about 2300 and speed was about 60km/h. (I was driving a lot slower) then suddenly the engine became very silent. And I pushed the break to stop. The meter still showed 2300rpm and speed was 60km/h (car and engine was in a complete stop) then after maybe 2-3s all gages went down to zero. I tried to start it again but starter did not turn engine. Only warning lights were on. I then jumped out and removed the ground cable from the battery in case there was some big short circuit. I put a charger on the battery and charged it for some hours and then made a new try. The starter was now turning the engine but it did not ?promise? anything tied for about 15s (sounded like it was not igniting).(Also engine service light was blinking). I then again removed the power from battery and loosened the connectors to the ECU. (Incase there was some dirt or similar there) Everything looked ok, put connectors back and tied again, after about 5s of turning the engine with the starter engine started.
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So any ideas, Okay maybe I have 3 different problems here with my car the air condition then maybe some grounding problem and then maybe something with the anti theft protection.
Does anybody know where I can find electrical circuit drawings for this model. Or have tips on where problem spots could be?
With best regards
An unhappy Vectra owner for the time being ?
Edited by Taiger on 13/02/2010 at 18:51
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Some text was missing in my post where the stars are don?t know why but it should be something like:
Now everything looked okay again (No service light or anything was lit). I took it for a drive and everything was ok. I then used the car normally for 2 days and then the problem was there again when I tied to start it, starter was turning engine but no fuel burning inside engine (Service light was blinking when I tried starting). I tried the same thing with the connectors to ECU without luck. I then got the idea to try with the spear key. Engine now started after about 5s with starter on.
So I believed that the theft lock in the key was the problem.
But the thing is, the day after I tried starting with the ?broken? key and it started. It doesn?t make sense. If it is broken ?decoded? it should not start working again. (The small black stealth ?thingy? is on the right place inside the key).
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Taiger, the problem with the speedo and revcounter reading high when the car is at rest and engine idling (possibly other warning lights on?) is the problem I had with our 2004 Corsa. The fault was at the crimped connection on the positive battery terminal lug/connector. It was intermittently high resistance, so the alternator would not always charge the battery. Strangely the engine usually started if the battery was not too flat. No warning lights told me this, eventually I had a voltmeter permanently connected to the cigar lighter socket so I could see if the fault was present (14V or dropping to 12V). The cure (as I had access to a crimp tool) was to crimp the joint a bit tighter.
The air con and immobiliser faults I don't know about.
Good luck!
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Hello Percy,
Tanks for this advice, I will check this as soon as possible and I will tell you if I find anything. When the temp light have gone down or up to max sometime the fuel meter have done the same thing. Then on some occasions the air back lamp and ABS lamp have lit up at the same time.
But will try your advice
Tanks?
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