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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
How do you replace the alternator on a 1993 Jeep Cherokee Sport?
start by loosening the bolts holding the alternator to the bracket.
Remove the wiring connections before extracting the unit, to avoid damaging the harness. There are 4 terminals, and one wiring support bolt; The Ground, wiring support, and main output (inside the plastic "cup" are 10mm, and the small Field terminals are 7mm.
should be about a 30 minute job.
It's worth mentioning that the lower bolt, as well as the wiring terminal posts, are much more easily reached from beneath the vehicle, with the 'splash shield" folded back.
Additionally, at least one source recommends removing the front alternator mounting plate from beneath the vehicle to make extraction of the old unit easier; the stock 90 amp DENSO unit BARELY squeezes past the AC Evaporator lines for removal from the top.
while you are at it you may as well go with a higher amp alternator. maybe a 120 or 136 amp alternator since cost wise its close. that way you'll have more power and always a reliable charge system. a n\high amp alternator from a 98 grand Cherokee or durango v8 should fit perfectly. if nothing else you may have to just grind a hair of metal off the bracket, even a file will work for this. take the bracket off if need be otherwise it should just bolt right on.
after that you will be able to run all types of lights, heater, a/c, accessories and your headlights wont ever get dimmer.
enjoy!
I recommend putting a block udder the oil pan and jacking up the engine a little bit and the alternator will come out easier it is a tight squeeze and without doing that I would have never got it out
Dynamos are important because they convert mechanical energy into electrical energy through electromagnetic induction, making them crucial for generating electricity in various applications. They are widely used in bicycles, power generation stations, and backup power systems, providing a reliable source of energy. Additionally, dynamos contribute to sustainable energy solutions by enabling the use of renewable resources, such as wind and hydro power, to generate electricity efficiently. Their ability to produce direct current (DC) makes them essential in many electronic devices and systems.
How much should it cost to replace an alternator in a Ford Expedition?
It depeneds if you do it yourseft of take it to a shop.
for example; if you get a rebuilt one is cheaper than new.
If you take it to a shop they charge by the hour, if you do it yourseft it will only cost you time instead of money.
I did mines my seft, very easy. and it cost me around $150.00 + tax for a new alternator.
There is a place near me that would rebuilt my old one for $50.00. open M-F only.
Of course mines when bad on a Sunday needed my truck back on the road that same day.
If it is like my 94 town and country 3.8, the best thing to do is remove the bracket und take it off the top. One book suggest that you remove thetop and bottom bolts to remove it from the bracket, then drop the alternator down and remove it by pulling it between the firewall and from crossmember. I found this impossible, since the exhaust pipe did not allow enough room. My car sat for 2 weeks till I decided to remove the entire bracket. It was not as hard as I thought it would be.
How do you change the alternator belt on a 1998 Mazda MPV?
You should change all of the belts at once, even if one is going bad because you have to take ALL of the belts off to get to the Alternator/Fan belt. It is the farthest in the back and it is impossible to change on its own.
You have to take the A/C belt off first. There's a pulley on the right with a 10mm bolt on the top (you'll have to loosen this to take the belt off) and a 12 or 14mm nut on the front of the pulley (you'll have to loosen this larger nut to get the pulley chassis to move so you can take the belt off). Once you've gotten it loose, you;ll be able to take of the first of three belts. Next is the power steering belt.
Underneath the alternator is another pulley with a guard around it. Follow the belt that pulls it towards the engine. You'll notice a device similar to the one on the right. Again, loosen the nut in front of the pulley and then loosen the bolt on top. The second belt will now come off.
The last belt is the Alternator/Fan belt. It's a little tricky because the loosening mechanism is different. Instead of having a system where there is a long bolt that tightens the belt to the axle of the pulley, there are two mounting bolts. One is located right behind the bolt that loosens the Power Steering belt. The other will be located right on top of the alternator itself and will be bolted to a rocker arm. Remove the bolt that attaches the alternator to the rocker arm and LOOSEN the bolt that attaches the rocker arm to the engine. You will physically move the alternator to the RIGHT to remove the belt. You will have to get the belt around the fan blades, so get the belt off of all other pulleys first. The way I get the belt off of the fan blades is by taking the belt and feeding it over the fan blades into the fan housing (I do it this way because it's easier to figure out how to put the damn thing back on). Once the entire belt is off of the drive shaft for the fan, I pull the belt out from the top of the fan housing.
Now the alternator/fan belt is the last belt you took off, so it'll be the first one you put on. But the bolts back into their respective places but DO NOT tighten them yet. Tightening these bolts is the last thing you should do. Once you've got that go ahead and put the power steering belt back on. You may have to loosen the pulleys some more because the new belts are tighter than the old ones. Again, don;t tighten these bolts yet. Put the A/C belt back on now.
I recommend tightening the belts back on a little at a time, and doing so evenly. Over-tightening the bolts wont break the belt, but you'll be driving to an auto part store asking for new bolts (who knew that the belts would be stronger than the bolts?) When you get to the alternator things will get tricky again. Tighten the bolt that holds the rocker arm to the engine FIRST. Once you;ve done that you can tighten the bolt that holds the alternator to the rocker arm. I have to add something here: there is no easy way to tell if the alternator is tight enough without turning on the car, make sure that the bolt is good and tight before you turn on the car though, because you'll end up destroying your alternator if you're not careful. The alternator belt usually can't go on any more than a little past hand-tight because the only way to adjust it is with your hands.
Some quick notes:
If you have extension bars for your ratchet set, use them. The spaces are extremely tight, and the parts around these spaces are kinda sharp. I've cut myself a few times changing these belts.
I would also suggest investing in a "cheater bar". It's a sturdy length of pipe a little wider than the butt of your ratchet. Place it where you would put your hand on the ratchet for extra leverage. This is extremely useful for those hard-to0loosen pulley nuts and really useful for tightening things up. Just be careful not to break any bolts.
One last thing: When replacing nuts/bolts you've completely removed, be sure to add some lube to them. WD-40 won't cut it. You'll need a good axle grease, or better yet, there's a blue colored bolt lubricant that is available at most auto supply stores and hardware stores. It's made with Teflon so things don;t freeze up together and it's also a corrosion inhibitor.
Hope this helps!
How do you check car alternators?
In my area [SE Texas] all of the national chain [Autozone, O'Reilly, and Advance for example] automotive parts stores have hand held portable test devices which they attach to my car in their parking lot. They do not charge for these services; they are free.
These devices can check my alternator, battery, auto electrical system, and even the on-board computers.
In the case of your alternator, these tests do more than just check for output voltage.
How much would it cost to replace an alternator including the labor charge for a Nissan Xterra?
Was quoted $500 to replace the Alternator and battery yesterday (May 2009) which seems a little high (they wanted $100 for the battery and $20 to put it in so you can assume $380 parts and labour for the alternator I guess)
How can you tell if the alternator is bad in a 2004 ford focus?
they will test it for you at napa.
Check the voltage at the battery terminals with the engine off and running. The voltage should increase and be greater than 12.
You should just have to reset the system. You might also want to make sure that the battery and alternator are both working properly. The alternator especially could be defective. Most are rebuilt and sometimes not done that well. Just have someone with a tester check the system. If all this is fine it it an electrical problem, it could even be due to one of the recalls. Make sure that all the recalls are fixed. It cost nothing but time. Just go to Ford'd website and put your vin to check to see if you have any open recalls. There are at least two that I know you van has.
My 2003 grand caravan will not start battery is clicking could it be battery starter or alternator?
More in likely the click your hearing is actually the starter or starter solenoid. This however could mean a few things.
First: Check the connections of the battery terminals. Make sure that the posts of the battery are clean and free of corrosion, then check the battery cable terminals as well. Corrosion on these could lead to a faulty connection and not allow the battery to give out it's full potential.
Secondly: Make sure your battery terminals are good and tight. Do not over tighten them, but make sure they don't move around at all. A loose connection here could not only drain the battery over time, but also make you believe you have a dead battery. Always check this if your battery is thought to be dead. Many of the times this can be case.
Third: Have your battery checked if these don't work after jump start and given time to charge. If you required a jump start, let the battery charge with the Alternator for about 30-45 mins (If fully drained - I.E. headlights dim)
The Alternator can be checked very easily with a Voltmeter; while your vehicle is running, place the leads of the voltmeter upon the battery posts, if it reads around 14 volts then the alternator is working fine.
If all of this didn't fix your problem, and you have a charged battery, but the vehicle still will not start and still makes the chatter, then i would suggest to have your starter tested, if found bad, then replace it.
On some older vehicles they have the starter Solenoid as a very separate piece of equipment. If the starter is good, then have the "Starter Solenoid" checked.
How do you replace the alternator on a 1996 Chevy Corsica?
I just changed my alternator on my 1996 Chevy Corsica v6. There are no a/c hoses and the drive belt is the tricky part because the adjustment pully is down in the bottom half of the engine you need to pull it up as you bolt off. Remove the negative part of the battery and then remove the main bolt towards the back the to smaller bolts and the bolt that holds the battery and then remove the wiring harness from the bottom once the alternator is loose. put it back in the opposite. I would not suggest for someone with no experience attempt to try to do this without some advise. As an alternator would seem to be an easy job and most cars are...and don't let this sway you with this car because with very little care other than what most people don't do is change the oil get regular tune ups and this car will run forever longer than Hondas or Toyotas those cars fall apart on the out side and are not safe they just run on "black oil" for very lazy people this car has a 5 star engine they just come in a ugly body but you can find the 3100 in many cars like late 90's blazers witch are a lot better looking then a corsica
How do you turn off the alarm on a 1997 Jetta and can you deactivate the alarm system?
Read your owner's manual. This information can be found there.
AnswerYou turn off the alarm on a 1997 Jetta by unlocking any of the 2 front doors. The alarm is temporary disabled when opening the trunk. If you set off the alarm because you replace the battery then you have to lock and unlock the doors to turn it off. First, lock all doors, including the trunk. Then reconnect the battery cables. Finally, unlock the doors. Instead of unlocking one of the front doors, you can also disable the alarm. This can be done by, after locking your car - which automatically arms the alarm, wait a few seconds and then turn the key the other direction for about half a second. This disables the alarm, yet leaves the door locked.How do you replace the alternator on a 1998 Ford Expedition?
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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.
15. Start the engine and check for proper charging system operation.
Where is the alternator located on a 97 olds aurora?
bolted low on the engine passenger side below the front head
How do you replace the alternator on a 1993 Chevy Lumina 3.1L?
Note RADIO CODE before proceeding!!!
Disconnect battery
Loosen tensioner for the serpentine belt, remove belt.
Remove wires affixed to the back of the alternator.
Note the wire positions.
Remove the 2 bolts holding alternator in place, you may need to remove a brace on the rear of the alternator to the head.
Remove alternator.
Replacement is the reverse, use the engine decal to reout the serpentine belt properly.
What is alternator output in amps?
The alternator (or generator) of a vehicle is the unit that converts the mechanical energy from the drive-belt into electricity. Amperage (amps) are the output level of the alternator. Alternator part number, as well as output amps are specific to each vehicle.
Another Answer
Your question is a little like asking, "How long is a length of string?"! The rated output current of an alternator depends on its rated output power rating and its rated terminal voltage. The rated output power can vary tremendously, according to the physical size of the machine.
Answering Which one is a separately excited generator - ac generator or dc generator?
Excitation is the phenomenon by which you control the excitation of field winding of a generator. In DC generator field winding is placed on stator and this field winding can be self excited or seperately excited depending upon the type on generator used. AC generators can also be self excited or seperately excited type but field winding is placed on rotor nad armature winding on stator.
Change an alternator in a 97 Chevy Blazer?
Remove the alternator belt by loosening the tensioner pulley. Remove the wiring from the alternator. Remove the retaining bolts to the alternator. Reverse the process to install the new alternator.
Will your 1990 560 sel keep running if you unhook the posotive terminal to do an alternator test?
Please don't EVER EVER do this! Without a load on the alternator, if it is indeed in operation it will "full field"...essentially run wide open...destroying itself and most of your on-board electronics with it.
From inside the van after removing dog house. 1/2" socket on long extension
How to tell if bad cables or bad alternator?
Answer
Hey there friend To check if alternator is false or not there is a simple way of doing it without getting to tear entire car and cables apart. Before you do anything loosen the negative cable but so its still connected to batter.
Start the vehicle, if cant slave it off and start it, while vehicle is runing disconnect the negative wire that you have loosened then if vehicle is runing its good if it dies then your alternator went bad and needs replacment.
If you need to drive badly because cant get a ride to get to schucks or some auto parts store you can bang the heck out of the alternator with a hammer which will charge the coil inside and will loosen some of the dust that collected there. That should be enough for you to get to store and back.
Good luck you can always Private msg me if you have any other Auto Questions.
Good Day.
It is the alternator. I have a 95 Monte Carlo and this has happened to me twice in the 3 years I've had the car. Each time I had to have the alternator replaced. The first time I had a problem with the alternator I took it to a shop and had it fixed. Two years later the alternator went out again without warning. That time we took it to a different shop and bought a new alternator with a three year warranty so it'll be free if it goes out two years later again.
Where is the alternator located on a 1996 Honda accord?
It's behind the engine on the driver's side a little bit above the oil pan. You have to go through the wheel well to get it out.
Why might the battery on a 1991 Mercury Tracer not hold a charge?
Its bad
Clean the battery connections and make sure the connections are good.
If the battery has been tested, has it been tested under an actual load, not just by placing the meter on it? also if the cells of the battery are beginning to break down, it will discharge at inopportune times,
