1998 bmw 528 when i am driving my battery light come on and cut off can't crank . check out found low battery , charing in full but car won't crank . jump start car will run . found fuse 15 7.5a under glove box burn i put a new fuse in there burn right away . check found short to alternator . replace alternator + fuse .
An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert whose answer got voted for 20 times.
An expert who has answered 20 questions.
Re: battary light on , engine cut off car won't crank
Sounds like it's your alternator, your alternator charges your battery and runs car once it is started. if you have a bad alternator your battery light will come on, and shortly after your vehicle will die, unable to restart without a jump. I would take your battery to autozone or an auto shop to have your battery and alternator tested.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
You have to have a scan tool. If you have tried that and codes come up as soon as you clear them, then their is a greater issue. Check the starter relay, disconnect it and clear codes and see if problem persists.
Possibly MAF - (Mass airflow sensor). Check and clean sensor and connection clamps. Google it for location on your engine/vehicle model. Test: with the engine running, spray carb cleaner around it lightly. if engine smoothes out, then you located your problem. You can find them on ebay.
Do you mean it won't start, or won't crank. You should have a neutral safety switch between the key switch and the starter to prevent you from cranking the engine in drive or reverse. A defective switch would keep the engine from cranking. A mechanic would check for voltage at the starter on the wire from the key switch and go from there.
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.
Many newer cars computers have to see anywhere from 50-250 good trips without the original problem showing up. This doesn't mean crank, cut off, crank, cut off... It has to actually be driven through a drive cycle. Otherwise, you'll need a scan tool capable of erasing the codes, the cheaper ones may not do the trick.
the battery indicator light usually comes on after a lose of power. Sounds to me like either bad gas, clogged fuel filter or a bad fuel pump. Easiest way to check this is have someone turn the key while you stand at rear side of vehicle and listen for the whinning noise a functioning fuel pump makes as it pressurizes the system.
P.S you dont have to start vehicle to check pump. only requires turning the key to the on position. Good Luck