If you are constantly having your battery go dead frequently I would first check your battery, first to see if both the positive and negative cables are tight and making a good connection (if they are loose your battery will not charge properly) also look for signs of corrosion on the battery posts as well and check the batteries in service date which should be a sticker with a month and a year punched out. Batteries are mainly rated to last between 3-8 years. The garage should have a tester to allow them to check the output of the alternator while the vehicle is running. I'd ask them to show you that. Also lets say for instance you have a 60 amp alternator, at idle your alternator would produce less of a charge as opposed to driving down the freeway at 65 mph so if they show you that have them idle the engine rpms up and you should see an increase if not then you may have a worn out alternator. Some alternators can cost a lot so I would ask about a rebuild (if applicable) on your existing one to possibly save some money. Just be sure whatever you decide to find out what kind of warranty is included.
SOURCE: sometimes my car starts & then not. never know
If there is an intermittent problem with starting, I always check the battery connections for cleanliness and wire brush after removing the connections. This is a very common problem on cars of your age., and doesn't take much money to perform.
If the battery, starter, and alternator are functioning correctly, this could very well be the problem.
Otherwise, many places like Walmart or auto parts stores will test and diagnose the starting/charging problem for free or for a nominal fee using a diagnostic machine, which can be effective both in cost and technically in determining the problem.
Good luck on this repair.
SOURCE: Hi, if a 1982 Volvo don't start and don't even
It might not start because of a dead battery, starter. Altenators charge the battery. I wouldn't consider buying it, If I counldn't hear it run.
did you say scanner not powering up or you not getting any code.because if engine not firing a faulty crankshaft position sensor or ignition module will cause no spark conditions.also check 20 amp ignition fuse to ignition coils and ignition module,check ignition battery feed 10 amp fuse to the pcm.check at the 16 dlc terminal at top ground terminal 4 that would be fourth terminal top from left to right.and check bottom far right terminal 16 see if you getting getting battery power.if fuse all good no power at terminal 16 your pcm could be getting poor ground contact or problem in the pcm thats not a home fix dealership has to run diagnostic scan test look for pcm fault or wiring fault.
SOURCE: i have lexus ls430 2001
You need a mechanic to connect car to diagnostic computer or you can buy your own hand held computer from auto parts store and diagnose yourself.
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