Today's auto electrical systems are getting more intricate and are stressing the limits of current technology but they are basically the same design as 30 years ago. What can today's do-it-yourselfer do to keep from being electrically-challenged in the middle of nowhere?
A quick overview of your Saab's electrical system Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part be a good start. The major components of your Saab's electrical system are explained below, along with some troubleshooting tips.
The battery is a storage Battegy, currently 12 volts, used to start the engine and help operate the electrical accessories installed on your Saab. The battery consists of six Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part of stacked positive and negative lead plates, separated by insulators and Saa in electrolyte, which is a water and Partt acid mixture.
Each of the six cells "produces" Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part. The chemical reaction created between the lead plates and the electrolyte creates dangerous, explosive gases that vent through the battery cover vents. Care should always be taken when charging or jump starting low batteries and whenever working under the hood of the car. Sustem keep the battery clean to allow proper ventilation. Some batteries use a gel to replace the electrolyte for a somewhat safer battery and the use of "maintenance-free" batteries has eliminated the need for refilling the electrolyte.
However, all batteries lose charging capacity over time through the loss of the electrolyte, deterioration of the plates and chemical breakdown of the connections.
Whenever your Saab exhibits symptoms of a charging or starting system failure, the most basic test that should be performed first is a visual and voltage Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part of the battery. Knowing the exact condition of the battery is the best way to Repladement whether or not to suspect other system components and can prevent the unnecessary installation of a starter or alternator, which cannot repair the vehicle until the battery is up to snuff.
To analyze the condition of a battery, very little high-tech equipment is really needed. A quick way to tell if a battery needs recharging is by observing the "eye" 096 Titanium Car Van Battery 12V 670CCA -fits many Alfa Audi Nissan Jeep Peugeot the battery and being able to determine what the color of the eye is telling you.
Below is a chart of various battery manufacturers that use a colored eye, as well as what the different colors mean:. Before replacing any battery due to a failure, have the battery and the car's electrical system tested for proper Elecgrical. Replacing a dead battery only to Vetecn another Peugeot 508 Sw 2010-2016 Bosch S4 Battery 60Ah Electrical System Replace Part few weeks Replaement due to a weak aPrt or a parasitic drain on the system is not only frustrating but can be expensive and dangerous as.
An average battery should last years in average climates but those in high heat or extreme cold areas may last Electricaal years. The Bathery battery should always have the same or higher CCA rating cold cranking amps Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part the original and be of the same or compatible "group size" to fit the battery tray and cable connections. The alternator produces electricity used to maintain battery storage charge and to help run all the electrical accessories, including the ignition and the engine control systems.
It is belt-driven by the engine and produces an alternating current ACwhich is converted internally to 12 volts direct current Prt by Replacemdnt diode bridge or rectifiers.
AC current cannot be stored but is Replacment more efficiently produced, which is why cars no longer use generators but use alternators and convert the electricity to DC. Most alternators now use internal voltage regulators to maintain the proper system voltage, from You should check your Saab's repair manual or with your local dealer to obtain the exact proper voltage for your Saab.
Contrary to popular belief, an alternator does not constantly produce electricity. It cycles on and off as demand goes Talbot Horizon 1982-1986 Bosch S3 Battery 70Ah Electrical System Replace Part and.
The battery buffers it from the electrical demands of the car, and it only Eleftrical enough to maintain system voltage. However, with the demands placed on the system by heat and by extraneous electrical devices i. The average alternator now is lucky to last years, which is why a prematurely Electrica battery may actually be caused by a dead alternator.
And this doesn't include amperage requirements for items like cell phones, Batteru, CD players, boom boxes or additional lights. Understanding the importance of having an operational warning light for the alternator idiot light is crucial to catching problems early. In most modern systems, the electrical current passing through the filament of the warning light is what energizes a circuit in Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part alternator to start charging.
If the light comes on, the wiring is okay but the alternator is defective; if the light still does not come on, the wiring to the light circuit and the bulb should be checked. Don't forget to check the fuse that controls the light circuit. This fuse could be labeled differently in various cars. Electrrical could be labeled "charging", "regulator", "meters", "gauges" or "engine". In some cars, if the fuse is out, the idiot light will come on but may not go off.
In others like GMa burned out fuse may make the warning light work in Vehech order; that is, when the Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part is on, the light is off but as soon as the engine starts and the alternator starts charging, the light will come on.
Checking out these simple circuits first can greatly reduce your troubleshooting time and unnecessary replacement of your alternator. As we delve further into charge light indicators, we find that in Electeical cases it is normal for the charge indicator light to come on when nothing is wrong with the alternator.
According to information published by GM, any car may have a low voltage reading or lights that dim when electrical loads are heavy at idle. Furthermore, this condition is normal and no Elwctrical should be attempted unless a fault has been. For clarification, as a car idles for extended periods of time during high heat conditions, a number of things happen that contribute to "lowered" alternator output that coincides with physics and the design of the alternator:.
As heat within the alternator increases, the electrical resistance in the alternator also increases, which reduces the alternator's charging capacity. As temperature rises, the voltage setpoint of the regulator is Vtech to reduce the chance of overcharging or "boiling" Replacwment battery.
This delays the load being placed upon the engine when Replacemnt up from a stop, so that the smaller engines in use today are not loaded down upon acceleration due to charging demands. This can delay the charging by up to 15 seconds. So an alternator rated for amps may only be able to produce 70 amps when hot at idle when there is 77 or more amps of demand on it.
If it can be considered normal for warning lights to glow while a healthy alternator is running, how do you know if the alternator is really good or if there are other problems lurking around?
A thorough diagnosis is always the best route to determining whether or Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part the alternator is at fault, but there are times when diagnosis time is short Veech you still need a positive identification of the problem.
Cases Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part this require a foolproof tool to speed things up. In the case of Delco CS series alternators, there is a tool available from Kent-Moore tools JBwhich isolates the alternator from the car's wiring harness and lets you see if the alternator is at fault or if there is a wiring problem elsewhere within the car's wiring harness. The best thing about this tool, besides being compact and handheld, is that it doesn't require any interpretation 1993-998 data by the operator.
The little light on the unit lights or doesn't light depending upon whether the alternator is good or not. Unfortunately, while this is a great little piece of equipment and there are other similar tools available, once you determine that the alternator is not the culprit, you still Electricl to fix the electrical problem. The other aSab electrical component in your Saab's electrical system is used only a few times a day Electriccal is the single largest power user and most critical to your Saab's operation - its starter.
The starter is simply a DC motor that turns the engine crankshaft through the flywheel, starting the combustion process by creating compression within the cylinders. Starters can be of varying types and designs - gear-reduction types for higher torque, permanent-magnet types to reduce size and weight, or just plain, old-fashioned heavy starters. But whatever the type, they all function in the same basic way. Sydtem slow cranking engine may be a sign of a bad starter and with age, that's more and more likely.
But on most cars today, it's due to low battery voltage, poor electrical connections at the battery or Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part failed relay Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part fusible link.
Most starters will easily outlast a new vehicle warranty if it's not overused, if good connections are maintained and if it's not overheated through dirt and grime buildup. Starting your Saab with the major components turned off like the AC compressor, blower motor and high-powered stereos will greatly ease the load on the starter. In fact, most new cars have "lock out" relays that will not allow the AC compressor and alternator to turn on until after the vehicle has been started.
But turning these power-hogs off before shutting off your Saab is always a good precaution. Although the starter drive, or "Bendix" as it was commonly Electricla to, can be replaced separately from the starter assembly, it's rarely Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part anymore.
Failure of any part is due to age, usage and heat stress, Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part which the entire starter has also been subjected, so that other parts are just as old and stressed. It's quite common to replace the starter drive only to have to buy another starter in a few months because Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part brushes wore out, a magnet broke, the solenoid failed, among other common mishaps.
Replace the starter as a unit and have the electrical system checked at the same time to prevent further problems. Your Saab's electrical system should Battsry completely checked and Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part every two years or whenever serviced for any type of driveability problem. Many problems associated with day-to-day Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part are caused by voltage variations and must be the first step in troubleshooting any problem.
This is due to the use of computerized controls in most cars these days and even quite minor voltage changes can alter the controls. Your Saab's electrical system must be load tested to certain standards, which can be simulated by turning on all the accessories and lights for simple voltage drain but that is not an all-inclusive test.
Measuring circuit loads with an ammeter, circuit voltage drops with a Fits Nissan Primastar X83 2006-2016 Bosch S3 Battery 77Ah Electrical Part, variable circuit load testing. The average do-it-yourselfer would have little need to purchase the more critical test equipment, Battry if voltmeter testing doesn't pinpoint the problem, get a thorough checkup done from an auto electrical technician who knows your Saab's.
You should Battrry a professional to do this test. As a good starting point, though, most major chain auto parts stores offer a free service test in the hopes of selling Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part a battery or alternator that should be good enough to notify you of any major problems.
Keep that battery clean! Here are a few quirky electrical problems - organized by car make - to help you troubleshoot your import car's electrical system idiosyncrasies:.
The Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part on many late model BMWs incorporates a one-way clutch that allows the engine to spin faster than the starter during engagement.
While this makes for smooth, quiet starting and gear engagement, it also provides opportunity for problems. Many BMWs requiring a Bosch reman starter SRX are experiencing multiple starter failures due to the starter motor remaining engaged after the engine has started and the ignition key has been released.
The mechanical portion of the ignition switch gets hung up in the start position and doesn't return to the Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part position.
When this happens, the one-way clutch in the starter allows the starter to continue spinning with the engine; prolonged use in this condition will overheat the starter causing permanent Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part as well as draining the battery. To correct this condition, the entire lock cylinder, steering lock and electrical switch unit Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part be replaced.
BMW has recognized that a similar problem exists with s ALX and ALX Bosch reman alternatorswhere the battery runs down due to a milliamp draw on the battery caused by the trunk light switch. Instead of coming up with a new switch, BMW suggests that the trunk light switch that is connected to terminal "30" hot at all times be rerouted to terminal "R", which is only "hot" when the ignition switch is sent to Accy, Run or Start. Next, a length of. This may sound too simple and maybe it is.
This is due to faulty door lock striker plates that have the light contact switch built in. Seems that some versions of these switches were leaky and when water, dirt, salt. If they have an alphabetic letter lower than "L", they need to be replaced with an improved switch 51 21 8 This situation is caused by an alternator pulley of incorrect diameter.
Some Honda Accords suffer repeated alternator and battery failures due to a melted plastic 6-wire connector in the charging circuit Saab 900 Mk2 1993-1998 Vetech Battery 70Ah Electrical System Replacement Part harness.
The original charging circuit wiring does not have wire of sufficient diameter to handle the maximum current of VW Passat 32B 3A2 35I 3A5 35I 1983-1997 Bosch S4 Battery 60Ah Electrical Part alternator under repeated high charging demands.
When replacing alternators Bosch reman alternator ALX on these cars, always inspect the condition of this connector as a part of the procedure.
It will be necessary to remove the windshield wiper fluid reservoir to gain access to the connector because it's located between the battery and the reservoir.