Q:my bmw 1988 528e is dying my battery. I have replaced my battery as well as my alternator?

Simple answer, difficult repair. Something in the auto's electrical system is either staying on when it should be off, or an electrical wire is exposed and touching metal. To find out what, you have to test every electrical system. Lights, signals, horn, radio, cigarette lighter, parking lights, everything. If you don't find fault in any of those, then you have to trace each wire to each system. You might want to find out where the auto's 'wiring harness' is located. Usually under a seat or something. You might find the location if you have an owners manual. Check out the harness first. Another old time trick: At night, open the hood - ignition key on - car in park - emergency break on. With the hood open, step on the front bumper to rock the car. Rock the car real good. If you see any sparks anywhere around the engine or from any wire, then you've found the defective electrical wire. (you do this procedure at night because in daylight you cannot see a spark. Also, you might hear the electrical short and not see it) Good Luck.

Q:Under normal circumstances, how long the car headlamps can be the battery power consumption finished

You can calculate their own, the battery with XXAH, such as 40AH said that the battery can be installed 40 hours of electricity, security is the current amps, when it is hour, 1AH is equal to 1 amp flow for one hour, if it is 40AH In other words, if the current discharge with 40 years, 1 hour to put over. If it is 10 amp discharge, it is 4 hours before the end.

Q:ONLY when i accelerate on the highway, speeds 65-75mph. The car rocks forward and backward like it's misfiring or something. the engine light is always on. I have changed spark plugs, wires, new battery and did a fuel system clean. What else could it be? Fuel filter? Catalytic converter?***2000 Chevy Malibu 160,000 miles V6 auto trans.

try the O2 sensors. most of the time the codes will read a misfire and you will end up replacing everything and still have problems. O2 sensors hardly come up in a code even if it is the problem. it could be a fuel filter but not likely. the cat wont go completely for probably 5 years so rule that out. good luck

Q:our 1999 expedition battery light illuminated and moments after the lights dimmed and it lost all power took it to auto zone they tested the alt they said it was good and they said the battery was shot but it was the opposite the alt was bad maybe the battery was bad but it still cranks the engine over without any problems replaced the alt and everything is ok i‘m just wondering why they told me something that wasn‘t true

Maybe they just used a little hand held that tested voltage but no load test. If you jump started and drove it there it might have had a surface charge and would show as a bad battery. A bad alternator can show 13.5 volts or better running with no load and drop down to 6 under a 30 amp load.

Q:12V55W headlamps bulb every night to open five or six hours, half a month to burn, can add resistance and the like, so that the bulb does not burn it? Can sacrifice point brightness!

Install resistance to choke. 12V55W bulb normal current is about 4.6A, then the resistance of the power P = 4.6 * 4.6 * R (resistance). The market so much resistance to the power of a little hard to buy, generally more than 2W in the following. It is recommended that you buy two high-power bulbs in series with (also a bit hard to find) or find someone to design an electronic step-down circuit buck.

Q:I cleaned my MAF sensor. But the SES light is still on, but is running Fine now, Will the light go off?

For all the confused people out there P0171+P0174 are system lean codes banks-1+2 and if it is a ford you really need to have a scan tool to properly diagnose this problem! You need to see the BARO and LONG TERM FUEL TRIM pids to determine if it is a MAF problem OR a vacuum leak, Although it is almost a given if it is a 4.6 or 5.4 to check the PCV elbow on the back of the intake for a deteriorated hose! good luck. Edit to Brutl you talk a lot of smack for a guy with barely 10 Years under his belt!

Q:What is the attention of the design of car lights? And what kind of parameters?

Headlights design is a trouble. Its structural design work is not very complicated, but in the early selection and analysis of the program is very troublesome, such as: light distribution analysis, internal space analysis, functional layout, seismic performance analysis (installation of fixed selection), far / Near the light intensity analysis, but also to consider the vehicle signal lighting regulations, and later also carried out the experimental verification: thermal performance test, waterproof experiments, durability experiments, in short, this is a design in the early need to consider A lot of work on the problem. At present, the new features and new technology is more and more cars, like car steering, LED lights applications, daytime running lights and other functions and technologies. Now a lot of high-end cars have a car steering function, the application of this function can be the driver in the vehicle when the steering can be more clear and timely look at the side of the pedestrian and vehicles to reduce the occurrence of the accident. For this technology, I read some information, to the present is still a little knowledge, which prawn if there is this experience, hoping to share it.

Q:any ideas? where can i get one cheaper than auto zones 180 bucks?And is ther any way to convert my auto lock system to straight manual?

Check the fuse in the engine compartment first before you buy anything. 9 out of 10 times, the fuse is blown.

Q:The little yellow check engine light I guess it is came on yesterday in my 00 Grand Caravan, wondering if anyone might know what causes this. The manual says possible emissions issue, or auto transaxle?

take it to autozone and they can read the code for Free

Q:I have a 2006 chrysler 300 and about 2 days ago my headlights would blink on and off, then they wouldn‘t stay on, When I put my lights on auto, they work fine, but when I put it in parking light or all light position they blink on and off, non-stop.then just a few minutes ago the left blinker started blinking real fast, the right one blinks normal.can any one give me some insight on what is going on??? thnx

difficult situation. search using google or bing. just that can help!