What is the alternator number on a Ford Fiesta?
What is the alternator number on a Ford Fiesta?
The company’s team of experts have listened to technicians fitting a replacement alternator (part numbers AEC1777 and AEC1778 on the MK6 2002-2009 diesel and AEC1780 and AEK3013 on the MK6 2003- 2009 petrol models), who have reported the battery warning light either stays on or the alternator overcharges.
What should the battery voltage be in a Ford Fiesta?
Just try the same battery voltage test with the engine at about 2000 rpm. It needs at least 14v to charge the battery. If the battery is good, but in a low state of charge, it may take quite a while (several minutes) for the voltage to rise. But if possible use a meter on the battery terminals.
What does RC pin mean on Ford Fiesta?
However, if there is no change in the patterns, this would indicate a possible PCM fault. The RC pin is the feedback from the alternator and must remain in a constant square pattern. If the pattern mirrors the SIG pattern, this would indicate a possible alternator fault.
Is the Ford Fiesta a good car in the UK?
The Ford Fiesta is one the UK’s most relied-upon vehicles, but despite its success, it is not without its flaws, as Autoelectro illustrates.
How can I tell if my Ford Fiesta has an alternator problem?
Even at idle, it should hold at 13v or more. If the battery warning light is on, and it never gets to 14v, then it is either alternator, or the connections to it. Check the fat wire from the battery +ve to the alternator, and the fat wire from battery -ve to the engine (usually near the starter motor.)
Just try the same battery voltage test with the engine at about 2000 rpm. It needs at least 14v to charge the battery. If the battery is good, but in a low state of charge, it may take quite a while (several minutes) for the voltage to rise. But if possible use a meter on the battery terminals.
What to do if your alternator won’t turn on?
If the battery warning light is on, and it never gets to 14v, then it is either alternator, or the connections to it. Check the fat wire from the battery +ve to the alternator, and the fat wire from battery -ve to the engine (usually near the starter motor.) Make sure they have good, clean, tight connections.
What should voltage of alternator be at 2000 rpm?
At 2000 rpm, there should be hardly any drop in voltage.if the alternator is ok. Even at idle, it should hold at 13v or more. If the battery warning light is on, and it never gets to 14v, then it is either alternator, or the connections to it.
What should the battery voltage be on a Ford Fiesta?
The voltage should read approximately 13.8V, but if it’s below 12.6V, then the battery needs to be removed and recharged using an appropriate charger. Testing the smart charge system on the diesel application will require a scope. These are the key points to which technicians should adhere: The A/S pin must match the battery voltage.
What are the symptoms of a bad alternator?
Outside of the battery warning light, a dead battery is the most common symptom of a bad alternator. As the alternator can no longer supply your Fiesta with an adequate power supply, it will begin to feed off of the reserve in the battery.
Why is my Ford F-150 not charging?
Please try again later. On many Fords the alternator has a ‘smart charge system’ that regulates the output of the alternator to ensure the battery is being charged efficiently, reducing emissions and improving performance. So let’s come along with Eric O. at the SMA shop as he diagnoses this F-150 that came in with a no charge condition.
Why does my Ford Fiesta have a dead battery?
It’s a warning light that indicates that the voltage in the battery is not sufficient. The alternator may be charging still, but just not enough to cover the electrical needs of your Fiesta. A dead battery is the end result of an alternator not charging enough.
Outside of the battery warning light, a dead battery is the most common symptom of a bad alternator. As the alternator can no longer supply your Fiesta with an adequate power supply, it will begin to feed off of the reserve in the battery.
