Hey i need help with a 1988 Volvo 240 wagon
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my first step would be to use a volt meter on the battery. if its not around 12.6V or so, I'd put a battery charger on it overnight.
if it IS 12.6V or so, keep that volt meter on it while someone else turns the key, does the voltage drop to near zero? you have a bad battery, replace it. if the voltage stays constant, then continue.
put the black - lead of the meter on the engine ground (aluminum bar on the fuel rail that has two screws with a bunch of brown wires), and put the red + lead on the battery + terminal, crank again, does the voltage drop to near zero? if so, you have a bad battery or engine ground cable. remove clean the battery terminals, replace them, try again. if that doesn't fix it, you'll need to look at the other end of the ground cable, and the engine block-to-chassis ground.
if the engine ground to battery+ voltage doesn't drop, put the red lead on the big terminal on the starter motor, this is kind of hard to reach, but its where the really big fat red wire from the battery+ goes... and put the black - lead on engine ground again. have someone crank the car. if the voltage drops to near zero, then you have a bad main battery lead. if it doesn't drop, and you still hear the strong clicks when you crank it, you likely have a bad starter motor.
if it IS 12.6V or so, keep that volt meter on it while someone else turns the key, does the voltage drop to near zero? you have a bad battery, replace it. if the voltage stays constant, then continue.
put the black - lead of the meter on the engine ground (aluminum bar on the fuel rail that has two screws with a bunch of brown wires), and put the red + lead on the battery + terminal, crank again, does the voltage drop to near zero? if so, you have a bad battery or engine ground cable. remove clean the battery terminals, replace them, try again. if that doesn't fix it, you'll need to look at the other end of the ground cable, and the engine block-to-chassis ground.
if the engine ground to battery+ voltage doesn't drop, put the red lead on the big terminal on the starter motor, this is kind of hard to reach, but its where the really big fat red wire from the battery+ goes... and put the black - lead on engine ground again. have someone crank the car. if the voltage drops to near zero, then you have a bad main battery lead. if it doesn't drop, and you still hear the strong clicks when you crank it, you likely have a bad starter motor.
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