I don't crank nor do i drive my car everyday but when i decide to start it the battery is so dead i have to jump it with another car and it normally takes about 15 to 20 minutes what is the problem and how can i fix it?
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double posted, why?
wont start with cables or both.,
and is not said.
its a no crank, (starting comes after cranking, )
when dead after jump
surely you can explain that in details.
went dead drive.
went dead after cables lifted after both engine ran for 15min?
went dead next day.what?????? details are the key to life,
it can be a number of problems one can be you have something is staying on it can be a light in the boot,you alarm is wired wrong or a radio is not off or it can be the battery no good. By jumping the car with a jumper leads can damage the battery, or you alternator is not charging good. First to check your alternator you will need a volt meter and place the negative from your meter to the negative of the batter and the positive to the positive and start your car. If the reading is 14.3 V to 14.8 V your alternator is good than the problem it can be any of the other things that I indicated
wont crank or wont start.?? no car starts , if it cant crank. (unless push starter (M/T magic) that is not a trans sensor its the PRN switch. ill answer for, wont CRANK ! it wont crank even with a good battery (charged) or jump started. 1: bad start 2: bad wires to same. so hot wire the starter small wire, the key start line is tiny. cranks. , starter good, no crank starter bad or cables bad. if it cranks hot wired, then the key line is dead. easy, huh?
not sure what you said but. seems the battery is discharging,? 12.6v is fully charged, own a voltmeter? try a good loaned battery , does it start the car,? i think you meant? i can jumper cable start my car at any time. (off another running car) but after running my car, the battery discharges and it will not crank at all. right? this means ,the charging system on your car is bad. if the starter cranks great, then the engine is flooded or is in great need of a tune up (sparkplugs etc) if flooded try the super secret in the op guide, crank with throttle wide open , this magic trick cuts all fuel injection allowing the flooding to purge away, and eventual starting. my guess 2 is the car wont start, so you crank the battery flat you jumper start it and it runs. (luck) then day 2, same deal cranks ok but wont start.. ever tune up the engine?
Hi Ed, Its always a good idea to run the engine while using any high demand accessory. You may like to have your battery and charge rate checked, but I believe just running the engine will solve the problem for you. Connect everything first, start the engine and then turn on the pump. Regards John
Troubleshoot first and then change parts! What was the original problem? It just won't crank over? The alternator just charges the battery the voltage regulator keeps from putting too much of a charge into the battery. Was the battery going dead? Did the vehicle start when jumping it with jumper cables? Too many unanswered questions to offer help, sorry.
If it does turn over and electrical works, then the problem is unlikely the battery. You can try jump starting. If it cranks when jump-starting it may be a weak battery, starter motor or alternator, but I don't think that this is the problem.
Check if there is spark on all cylinders. Do a code scanning (this car is OBD1, you will need to do the scan at the dealer place or to find a BMW OBD1 tool- Universal OBD2 scanner will not work on a 1994 BMW). If the codes return misfire or mixture related errors check fuel pressure, check sensors and parts that determine the mixture (MAF/MAP, AIT, O2 sensors, IAC and EGR system), check the vacuum system for leaks and check the crank sensor.