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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
Check fuse and wiring.
What 2 factors determine the output frequency of an alternator?
The engine speed is one as most alternators are connected to the engine via a vee belt.
Is there a fuse for the alternator on the ls400?
I've have never heard of an Is400, but if it is wired correctly it should have a fuse.
How do you remove an alternator off 2001 Oldsmobile silhouette?
this is a fun one you have to remove the power steering pump bolts and swing it out of the way to allow enough space to slide out the alternator. of course that is after you support and tilt the engine so you can get the alternator bolts out to. dont forget to disconnect the ground wire from the battery first. not a hard job just has to be a certain way
How do you tell if it is the battery or alternator that is bad on a pt cruiser?
Start the engine and test the voltage at the battery posts with a voltmeter. If you get a reading of 13.5 to 16 volts DC then the alternator is more than likely good. Charge the battery fully and then have it tested at any auto parts store. They will test if for free.
How do you replace an alternator on a 2002 jaguar van den plas 4.0?
To replace an alternator on a 2002 Jaguar van den plas 4.0 simply refer to the user manual.
How do the wires hook up on a alternator?
Some have a 3 wire set up. Some a single wire. I just did my 1st one tonight and it was very simple. Worked 1st try and thats not usualy my luck. Very important to disconnect the (-) negative wire from the battery before starting. It could damage the new one and void any warranty.....Good luck
What mileage should and alternator belt be changed?
There is no set mielage. It depends on the manufacturers recommendations and the conditions under which the engine is working
How do you remove the alternator on a 1990 Ford truck?
Remove the nagative cable from the battery(as to not get shocked), remove both the top and bottem bolts. The bottem one is long and is also larger and has no threads in the middle and has a tendancy to get stuck easily. Just keep losening it and pull it out while supporting the alternator. Carfully remove the harnesses and you're done!
How do you determine if you have a bad battery or a bad alternator?
Older vehicle (non-computer, uses points): With engine running, remove either lead from the battery (taking it out of the circut). If the engine quits, it needs a battery, if not, do diagnostics on the alternator.
How do you replace the alternator on a 1995 Mazda mx6?
Take it to a mechanic....
use a 12 mm extended ratchet to loosen the accessory belt tensioner (remove belt)
Unbolt the alternator from the engine chassis and unplug the positive and negative terminals.
New Alternator Costs about $200, New Starter Costs the Same.
Why is Lincoln Mark VIII is eating batteries alternators?
Sometimes with these Marks when you change either the battery or alternator the other will go out so a lot of places change out both at the same time, also the positive cable can be at fault and it's a pain to change out.
Brand new car battery and alternator but your car keeps dying?
I had the same problem with a Lebaron I had. It turned out to be a wiring problem. Luckily there's really no part cost to fix this problem, just labor in tracking down the bad connection.
You should check to see if you are getting spark at the wires,and fuel pressure first.
How do you replace the alternator on a 1987 Nissan Stanza?
Hi, I am certainly not an expert but I do have a 87 Maxima ( vg30e engine ) and to gat at that alt. you are best to take off the pass front tire then the plastic shield on the fender and the area opens up to you. Very snug quarters on the Max. don't know for sure about the Stanza. I think they have a 4 cyl.?
How do you replace the alternator on a 1981 Toyota truck 22r?
There are only two bolts. Loosen both, so that you can get the belt off. Then take them all the way out, and the thing'll fall right out, pretty simple.
How do you replace the alternator on a 1991 Hyundai Excel gls?
To remove the alternator, remove the top bolt that tensions the belt. Remove the wiring. One is a plug and the other is with a nut. The last thing is to undo the bottom nut from the side closest to the exhaust under the alternator. This bolt has to be totally removed by pulling it out from the belt side. The alternetor will then lift out. After you have done this once you should be able to change one in about half an hour maximum.
How do you replace the alternator on a 1999 Oldsmobile Alero?
First, remove the negative battery cable. Then remove the wires off of the alternator then the bolts that hold it on and then remove the alternator. The schematic for the serpentine belt should be on the fan shroud. If not, draw one before removing it. Don't rely on memory.
How do you replace the alternator on a 1995 Toyota Corolla automatic?
disconnect neg.battery cable. disconnect wires from alternator. loosen pivot and lock bolts. detatch drive belt. remove pivot and lock bolts from the bracket. installation is reverse of these steps.
What do you do if you may have bought bad gasoline?
Well it depends are you having problems with the vehicle? what makes you believe it could be bad gas? depending on how bad the vehicle is running I would drain the tank change fuel filters and report the gas station to the state fuel commission or whatever your state has for overseeing fuel issus contact the station where you purchased the fuel with the date time and amount you got and the problems you are experiencing. sometimes the fuel supplier after receiving several complaints will pay for the repairs needed for all the affected customers.
Did you change out the belt? I had a chirping and squeaking on mine and my 95 Impala and I couldn't isolate it so I went with the cheapest repair, a new belt and low and behold it solved the problem. As soon as I hear a noise now, it's belt first then more expensive parts last! Good Luck
My auto alternator is putting out 17.8 to 18.4 volts what is the problem?
when I experienced this same situation, it was the ground wire from the engine to the body of the car. You should have a ground wire going from the engine block or intake manifold, etc., to the firewall of the car. To test this out, use a piece of wire with alligator clips on either end and and "short" the block/intake manifold to the firewall.
Take a look at the voltage regulator. if it is externally regulated it is most likely up near the headlights mounted to the body, if it is internally regulated its inside the alternator housing. Easy way to tell is if there is 3-4 wires on a pigtail going in to alternator, its internal, if there is only 1-2 wires going to the alternator its external. External regulators cost around 10-15$, internals are around 25$. still cheaper than a new alternator. For peace of mind, just take it off and bring it to the guys at the part's house so they can bench test it off the vehicle.
Can bad diodes in the alternator cause the battery to go dead when the car is off?
Bad diodes in the alternator can cause the battery to go dead when the car is off. The diode bridge (six diodes) is directly connected to the battery, and is used to convert three phase delta AC from the alternator's stator to DC for the battery. Normally, if the engine is not running, the diodes are reverse biased and do not conduct current. If one of the high side diodes is shorted then the diode trio (another set of three diodes supplying the regulator/rotor) could conduct and drain the battery. Often, a diode failure is a short or an open. A short in a high side diode along with a short in a low side diode would result in high current from the battery, and that would probably blow the fusible link. An open would result in poor performance of the alternator.
