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Alternators
An alternator is an old term for electric generator that converts mechanical energy to electrical energy producing alternating current. Alternators are mainly used for recharging batteries and to power electrical loads of vehicles.
4,629 Questions
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Where do the wires go from an alternator?
if i remember correctly you have a heavy duty cable that goes to the battery and a light cable typically red that goes to ignition posative via the charge indicator light and some alternator have a earth wire as they are insulated this varies from make to make of alternator and vehicle maufacturer but the principle is the same
How do you tell if battery is dead?
If you do not have a volt meter you can not really determine the health of your battery. You can ask your auto parts store to "load test" it. Most provide this service for free. It does seem today's batteries do not give a warning... when they quit, there are junk. I've had several that will not even take a jump.
How do you replace an alternator 2006 Honda Pilot?
There are only two bolts that hold the alternator to the motor. Find the two bolts in the front of the alternator and take those two off. You also have to disconnect the wiring from the top of the alternator (1 just unplug and the other unscrew off some metal piece attached to alternator). The way I pulled it out was by sliding up the steering fluid and stuffing the alternator between that and the motor. I also had to remove the black plastic cover on top of the engine, the one over the block and the one over the coolant cap/hood release so I could have some space. I have not put the alternator back in yet so I cannot help you there as of now.
How do you change the alternater on a 2002 Kia Sedona?
Disconnect the battery and wait for at least 30 minutes for the airbag system to go offline. (I actually think it takes less time, but better safe than sorry).
Simpler, less costly method than the original below:
1. Disconnect the battery.
2. Do not mess with the A/C connections this method has enough flexibility to maneuver the alternator without disturbing the connections too much.
3. Remove air intake housing, air hose, air filter housing, battery, and battery carrier. 4. Disconnect upper coolant hose bracket from the engine and it push up on top of the engine.
5. No need to disconnect the the A/C coolant lines. Just remove the brackets that mount them to the car body opposite the alternator. This will give you flexibility to move the radiator and mounting bolts.
6. Remove each of the fan housings; it is a tight fit to get them out. This should give you sufficient space to work on the alternator itself and remove it.
7. loosen the tension pulley, the one toward the firewall, no need to remove it but no big deal. Then loosen the bolt below it to help put the belt back on later.
8. Remove the alternator, disconnect the electrical and remove the mounting bracket that mounts to the engine. The long bolt on the bottom does not come all the way out but you can still remove the alternator with it wedged in the hole. Remember to put this one in first when you reinstall the new on;
9. Work the alternator carefully around the front of the engine and remove from the right side.
10. Installation is the reverse of these instructions.
Should take about 3-4 hours depending on how difficult it is to remove the fans (Recommend a nut driver with a flexible extension, especially for the bottom left bolt).
Disconnect the sensor and horns.
Remove the front, top support (the one above the radiator).
Remove the air conditioning system components in front of the radiator and alternator and cap them.
Drain the cooling system and remove the radiator.
Remove the alternator.
Reassemble with new alternator. (Add compressor oil to AC system and use new seals. Refill cooling system.)
Have AC system evacuated and recharged by a service professional.
(Optional but recommended) Drive to the nearest auto lot and trade the Sedona in for something not made by Kia or Hyundai... {;o)
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How do you replace the alternator on a 1998 Eddie Bauer Ford Expedition?
Do yourself a favor. When buying a New Alternator have them check it before taking it home? I had a bad incident that I ended up with, 3 bad alternators in one day, 3 different stores. Last store check it before I took it home and everything was good. I ended up changing it 3 times. Make sure they also change the pulley. Alternator Removal & Installation 1. Disconnect the negative battery cable. 2. Rotate the drive belt tensioner away from the drive belt and remove the drive belt from the alternator pulley. 3. Detach the electrical harness connectors at the alternator assembly. 4. Disconnect the positive battery cable and remove the nut and washer. 5. Remove 2 front alternator bolts. 6. Remove the rear alternator support bracket retaining bolts and the support bracket. 7. Remove the alternator from the vehicle.
To install: 8. Place the alternator in position and loosely install 2 front alternator retaining bolts. 9. Install the alternator bracket and 3 alternator bracket bolts. Tighten to 84 inch lbs. (10 Nm) 10. Tighten 2 front alternator retaining bolts to 19 ft. lbs. (26 Nm). 11. Connect 2 electrical hardness connectors to the alternator assembly. 12. Connect the positive battery cable and install the nut and washer. Tighten the nut to 72 inch lbs. (8 Nm). 13. Rotate the drive belt tensioner away from the drive belt and install the drive belt on the alternator pulley. 14. Connect the negative battery cable.
Start the engine and check for proper charging system operation.
What does excess diode ripple mean in charging system problem?
It means the tester isn't giving you useful information. bridge rectifier could be failing.
replace or repair depending on what vehicle. some are economical to repair, some are cheaper to replace.
How do you replace the alternator on a 1999 Saturn sl2?
check link below:
Huge PITA but it is possible. My alternator for the 4th time quit working last weekend. My dad changed it for me and it took him about 4 hours. If possible, pick up a shop manual available at any auto part store for the car and read. It's in an impossible space to get to, but it goes on a lot faster than it comes off. Good luck!
What is the cost to replace a 999 Ford Explorer Alternator?
to replace parts on a 999 ford made in 1902 would cost you about £152.000 when i got a new whell for it it cost £359 for 1
How do you replace alternator 2005 Honda Accord ex?
It's not too bad: since Honda finally got tired of all the complaints from their mechanics about having to spend three hours doing a 20-minute job and put the alternator in front of the engine (it used to be behind it, and you could barely get it out), the job is:
1. Unhook the battery.
2. Disconnect all the wires going to the alternator. There should be two. You can't mix them up because one is a huge plug and the other is a ring lug.
3. Remove the top bolt and loosen the bottom one. Push the alternator toward the engine and remove the belt.
4. Remove the bottom bolt and lift out the alternator.
5. Take the old one and the belt to the auto parts store. Exchange the alternator and get a new belt. (I do it this way so I don't have to pay a core deposit. Alternately, buy the new parts before you start, and use "return the old alternator to the store" as a reason to go driving.)
6. Set the new alternator in place. Hook up the bolts and wires, but leave the bolts loose enough that you can adjust the alternator.
7. Put the belt on and set its tension by gently pulling back on the alternator. You want about 1/2" deflection in the middle of the longest run. Tighten both bolts good and tight.
8. Hook up the battery and you're done. Go for a ride!
On 2002 passat where is the alternator located is it really 3 hours labor to replace the alternator?
labor time is 2.5 hours
How do you change the alternator on a 2004 ford escape V6?
This is not very complicated. If you do like I tell you here you will be done in less than tree hours.
1. Remove passenger wheel. Disconnect negative terminal from battery.
2. Remove brake caliper assembly and tie it to the coil spring with steel wire
3. Remove the 2 bolts of the wheel hub to the shock absorber and tie the hub with the coil spring with steel wire. Remove the nut holding outer tie rod end from hub and pull it out.
4. Push the brake caliper and wheel hub backward so you can see the axle. You have two nuts to remove of the bearing holder. Remove those two nuts and you can remove the axle by pulling gently toward the outside and put it in a clean place.
5. Now you can see the alternator.
6. take your 3/8 ratchet and put it in the serpentine belt tensioner. Use a big key to pry easily the tensionner and undo the belt. Be sure to support the vehicule securely so it don't fall on you once you're under.
7. Remove the plastic protector of the alternator by prying gently under it with prybar. It is just plastic push in fastener so be gentle. There is also a retaining hole behind that is on to a bolt. Push it upward and pull it out.
8.Remove the three bolts holding the alternator. Two in front ant one behind.
9.undo the connection. The plastic connector need to be push on the little plastic thing while pulling it out.
10. Remove the bracket that hold the alternator. It have only tree bolts and takes ten minutes to remove. You won't get the alternator easily out unless you do that. You can maybe do it another way but it will take more time than 10 minutes.
11. Remove the alternator and insert the new one in without connecting it.
12. Install the alternator bracket by starting by the easiest bolt.
13. Connect the alternator.
14. Install the alternator, put back the axle by pushing it gently into the transmission and moving it so it insert in the splines correctly. Install the two nuts. Insert it in the wheel hub and put back the big nut with hand for now.
15.Put back the wheel hub with shock absorber. Put everything back and tight everything back and you are done.
bad voltage regulator, should not go passed 14, should not go below 12
How do you remove an alternator from a 95 Chevy Lumina with a 3.4L engine?
remove pass side strut, steering knuckle, drive shaft and exhaust to get it out through front wheel well Or take to a qualified mechanic and pay $500 labor Take my advice ONLY REPLACE WITH AN AC-DELCO ALTERNATOR you dont want to pay that kind of labor again
How do I change an alternator on a 1998 Pontiac Montana?
You need to make space for the alternator to be detached and removed by rotating the engine forward, dropping the subframe and removing the power steering lines, the fuel pressure connection. This is also after disconnecting the Neg batt cable, the belt, the manifold cover, and removing part of the windshield wiper assembly.
Rotate the engine by attaching and using a ratchet type tiedown strap to pull the engine forward after partially removing the brackets that secure the engine were it is. These brackets are right there attached to the radiator support frame.
You also drop the sub frame for the same reason (ie. to make more room).
You use a floor jack under the sub frame, and drop the frame after you have removed the front bolts.
I'm working with the assumption that you know you have to do all the other things that you need to do if it was easy to get at.
The FADEC already has power prior to engine start. In fact it controls the entire start sequence. It receives power under normal starting conditions via an ECBU ; the acft will have power from either an external source, the APU, or an operating engine. The alternator stator provides power to the FADEC once the engine reaches 10% NG. This way the engine is entirely self sustaining once started and during the majority of start sequence. Should the alternator stators fail, power is then given from the ECBU again (28v DC power source).
How much should it cost to fix the alternator on a 1994 Chevy Corsica in Columbus oh?
If you just asking how much a new one is I just replaced one on my 1995 Corsica and it cost a little over $70. That was just the price of a new one I did the work myself.
Why is the power not going back into the battery from the alternator?
Alternator output fuse or fusible link under the hood, I can't believe the people that don't state make, model, year and engine size before posting a question.
How do you replace the alternator on a 1991 Infiniti G20?
It is quite easy actually! First off you need to loosen the tension bracket from the top, it's a longer bolt slightly above the alternator, now you need to get under the vehicle, there are only really two bolts holding it on, one very long one and a shorter one. After those are removed you can unplug the alternator from its power source on top...now to remove it..a little tricky! You now have to remove the A/C motor which prevents you from pulling the alternator out from the bottom..it is held on with 4 bolts..once it is off you can drop the alternator..
I don't actually follow the second part of the above answer because removing an an a/c motor is not quite easy. I removed the alternator from the top by removing the big radiator hose and its housing unit from the engine. When you put the housing back, just make sure you seal it good so water won't leak.
How can you make a larger current from a dynamo?
A dynamo is different than an alternator in the fact that the rotor is a fixed magnet rather than an electro magnet as used in an alternator. This makes a dynamo a constant output device. Usually the output is connected to a relay that opens when the battery is fully charged and the current is wasted. the only way increase output is to rewind the stator with more coils of wire. It is usually not possible to fit any more wire in the iron core of the stator as they are designed to be full at the designed output current rating.
What would cause squealing after a new alternator ac belt is put on?
It could be a bearing in an idler pulley.
Whats wrong with a car that wont turn over but the starter alternator and battery is good?
The neutral safety switch could be bad or the ignition switch is bad .
