How To Change Alternator On 2004 Buick Rendezvous
A bad alternator can get out your Buick Rendezvous without power and unable to movement. Alternators don't e'er become bad in the exact aforementioned mode. We'll cover the symptoms of when an alternator goes bad, and how to diagnose a bad one (which is actually pretty like shooting fish in a barrel).
How Your Rendezvous's Alternator Works
The alternator's job in your Rendezvous is to provide electricity as it is running. The battery stores plenty voltage to exist able to outset the engine without the assistance of an alternator.
It is turned by a serpentine belt. Information technology's worth noting that a bad serpentine belt can crusade the alternator to end charging effectively. Information technology's pretty easy to tell if one is bad. Information technology'll look dry rotted. If it's been slipping a lot information technology'll accept a glossy shine to it. You'll have probably heard it squeal when you commencement the engine. They typically don't fail quietly.
Symptoms of a Bad Alternator: Buick Rendezvous
Almost of the time, when replacing an alternator, the alternator itself is relatively affordable. Information technology's the labor that makes the chore expensive. Here are the most common symptoms of a bad alternator in a Buick Rendezvous:
Battery Light
The battery light is designed to tell you lot that in that location is not enough voltage to properly charge the battery, or that the battery itself is not holding the proper voltage.
In rare occasions the service engine soon light may calorie-free up. Besides, some vehicles take an "alt" light that specifically tells you there is a trouble with the charging arrangement, and not the battery itself.
Dead Battery
Outside of the battery warning light, a dead battery is the almost common symptom of a bad alternator. As the alternator tin can no longer supply your Rendezvous with an adequate ability supply, it will begin to feed off of the reserve in the battery.
Once this battery reserve hits a certain level, the vehicle will begin to run erratically and volition no longer starting time when the key is turned.
Ofttimes, the battery lite will come on, the alternator gets replaced, and then a few days afterwards the vehicle dies. That's why it's important to test the bombardment before you but replace it. Almost whatsoever machine parts store will examination your battery for complimentary to see if information technology holds a charge. The process can sometimes have an hour or so, but it'due south worth it to know earlier throwing coin into a battery that yous do non need.
Stalling Engine
Equally described in a higher place, a bad alternator will drain your Rendezvous's bombardment fast. When the battery gets and then expressionless information technology will no longer be able to power your Rendezvous's ignition system. As the ignition arrangement is no longer able to produce a full powered spark, the engine volition begin to sputter and stall.
If you discover yourself in a position where you suspect that your voltage is dropping, but you need to safely go off the highway, plough off everything that you possibly can. Impale the radio, daytime running lights, air-conditioning, heated seats, EVERYTHING. That will allow all of the limited voltage in the battery to go to the ignition system.
Bearing Noises
If your Rendezvous's alternator starts to take bearings that neglect, information technology'll begin to make some very obnoxious noises. If the serpentine belt has gone bad, it tin can brand some noises too, but it won't sound metallic like the bearings going bad would.
Dim headlights
Dimming headlights are one of the well-nigh common signs of a bad alternator in the Buick Rendezvous. Dim headlights indicate that the alternator can't keep up with the energy asking for the lights. As your Rendezvous begins to eat through the voltage stored in the bombardment, the headlights volition begin to fade.
Electric Accessory Issues
Many accessories in a vehicle require quite a chip of voltage. Heated seats, the blower motor, power windows, and even the radio will piece of work erratically or not work at all when the alternator is bad.
Buick Rendezvous Bad Alternator Diagnosis
Some alternators go bad correct abroad, and some slowly lose their power to charge under heavy loads. The ones that fail completely are easy to diagnose. The battery drains and yous are stuck with a vehicle that goes nowhere.
The challenge is diagnosing an alternator that is just not quite charging similar information technology needs to be. You tin can easily diagnose it with almost whatever multimeter. Hither's what to practise.
- Get a multimeter. They are inexpensive (y'all can become a decent one for $x), and you tin can get them nigh anywhere.
- Set up it to read voltage. Specifically, yous'll need to set it to 20V DC.
- With your Rendezvous turned off, you'll connect the negative side of the meter to the negative bombardment post or wire. You lot'll then bear upon the positive side of the voltmeter to the positive battery wire. With the engine off, yous should get a reading somewhere between 12.0 volts and 12.6 volts.
- Now that you accept this baseline, information technology's fourth dimension to turn the engine on. Let's go ahead and exit the air conditioner off, as well as the headlights and whatsoever other accessories.
- With the engine just fired upwardly, you should get over 14.2 volts. If you got 14.2 or more volts, the alternator is charging fine. If it's nonetheless showing in the 12's, information technology's time to replace the alternator. If it's producing a voltage level in the 13's, go ahead and have information technology into a parts store and accept information technology tested. Information technology's probably bad.
- Now, bold that the alternator was producing over 14 volts, become ahead and plow on the headlights, air conditioner, radio, and whatever other accessory you lot can think of, and run the aforementioned exam all over again. If the voltage dropped back into the 12's, it'southward a very strong indication that the alternator is bad. It's still worth having it tested, but exist prepared to replace it.
Another test you tin can practise that's not nearly equally scientific is to plough the headlights on and then starting time the engine. They should become brighter later the engine starts, since the voltage is increasing by almost 2 volts.
Now with the engine idling, rev it up a little fleck. Did the headlights get brighter as you increase the RPM? This is a very strong indication that the alternator has in fact gone bad.
This test depends a lot on yous to detect very subtle differences in lighting. It should not exist used in substitute for checking the voltage every bit described directly to a higher place.
Determination
Over the life of any vehicle, the alternator is going to go bad. Good luck diagnosing the alternator in your Rendezvous. If there is anything that yous would like to add together, please leave a annotate below.
Source: https://www.700r4transmissionhq.com/bad-alternator-symptoms-buick-rendezvous/
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