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 Posted: Sat Mar 26, 2011 12:24 pm |
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Joined: Mar 24, 2011
Posts: 5
Trade Rating: 0
Location: prestwick
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hi my problem is my car turns over good when trying to start but just dosent fire up,it had a new throttle body and still nothing thinking ecu,immobiliser if its the ecu does any 51 plate 1.4 glx ecu do or does it need to match existing thanks.
also checked all fuses fuel pump and cut off checked getting fuel ok.
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| dont cars give u a headache? | |
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Posted: Sat Mar 26, 2011 12:31 pm |
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Joined: Dec 16, 2010
Posts: 1533
Trade Rating: +10
Location: UK
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immobiliser probs, providing you havnt corrupted the ECU or BSI by playing with the electrics whilst the cars plugged in? how did the problem start?
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| Please Dont take any of my posts as written fact. They are simply my opinion and although to the best of my knowledge true, the information within them may well be incorrect.
Any work you undertake as a result of my posts is done so at your own risk  | |
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Posted: Sat Mar 26, 2011 12:40 pm |
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Joined: Feb 07, 2010
Posts: 13077
Trade Rating: +65
Location: England
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| The Beginners Guide to a 206, That obviously no one ever reads wrote: |
Q) My car won't start
A) If your car won't start then it could be due to your vehicle's immobiliser system.
The following is the best way to isolate the problem:-
* Check the VERY obvious but sometimes overlooked first - Is there petrol in the vehicle? Is the battery flat? Are the connections to the battery loose?
* If the engine occasionally splutters as if it is just about to start but doesn't fire up fully, starts and keeps cutting out or turns over very slowly then this is likely not related to the immobilser.
* If the engine won't turn over at all (no sound when turning key) or the starter motor just continues to turn but the engine won't fire you may have immobilser issues. Many modern vehicles do have an immobiliser warning light on the dashboard (usually a sillhouette of a key) - check your manual. But some vehicles will not have this warning light. And if the immobiliser is not factory fitted then the light will not come on.
* Do the following:-
- Lock up the vehicle using the remote if equipped and open again. This may reset the immobiliser. Then try and start the vehicle
- Check the fuel cut off button if you have one, it is located to the back of the battery normally either red or black. Normal procedure is to press the button.
- Next, find any spare keys and try them. This will rule out any problems with the transponder chip within your key. Although this does not rule out problems with the transponder aerial.
- Disconnect the vehicle's battery for 5 to 10 minutes, reconnect and then try starting the vehicle. Again this may reset the immobiliser/ECU. Follow the relevant procedure further up in this thread.
- If all this fails then further investigation will be required by a specialist.
Immobilsers work in several ways:
- disconnect voltage to HT leads/coil pack and subsequently stop spark plugs from firing
- disconnect voltage from fuel pump
- disconnect voltage from starter motor
Depending on the vehicle the immobiliser system may employ any combination or all of the above.
If the starter motor is turning then the usual course of action an engineer would take is to see if the plugs are sparking or that fuel is being pumped and then work back to the cause of any irregularity.
Of course the problem could be totally unrelated to the immobiliser and be a faulty fuel pump or ignition system or just a wire unplugged but most engineers would still go about diagnosing the fault in this way. Alternatives are diagnostic fault code reading systems which an engineer would plug into the vehicle's diagnostic socket with specialist equipment and then be able to check all systems in the vehicle as well as any fault codes that may have been logged. These diagnostic systems can make fault tracing easier. |
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Posted: Sun Mar 27, 2011 2:31 am |
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Joined: Mar 24, 2011
Posts: 5
Trade Rating: 0
Location: prestwick
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hi thanks for replies it was running fine then went out and jumped in car and would just turn and not fire up on checking the fuses i noticed the cigarette lighter fuse had blown and thats it .
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| dont cars give u a headache? | |
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Posted: Sun Mar 27, 2011 3:55 am |
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Joined: Feb 07, 2010
Posts: 5575
Trade Rating: +33
Location: Moscow
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Replace that fuse. IIRC the cig lighter is on a live feed.
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Posted: Sun Mar 27, 2011 4:41 am |
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Joined: May 13, 2010
Posts: 603
Trade Rating: +37
Location: Dorchester, Dorset
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| tomd0801754 wrote: |
| Replace that fuse. IIRC the cig lighter is on a live feed. |
it can be on both perm and ignition live, depends where you put the fuse.
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Posted: Sun Jun 19, 2011 7:47 am |
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Joined: Jun 18, 2011
Posts: 1
Trade Rating: 0
Location: Mauritius
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Hi! I have the same problem: engine occasionally splutters as if it is just about to start but doesn't fire up fully, starts and keeps cutting. Checked injector, pump, coil, fuse but does not start.
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