Question about 1987 Mercedes-Benz Mercedes Benz 190 Class
My car wouldnt start - only had the battery on for a year. Repair guy came out and fitted a brand new one - 5 days later car wouldnt start again, battery drained (BMW 3 series 1995) Took it into an auto electrician who said the battery was faulty and couldnt find a fault with the car (ie alternator etc). I contacted battery supplier who says will fit another new battery but he is convinced the problem is with the car - me too, to be honest.
Why havent the auto elecs picked up on this? What can it be?
/* Style Definitions */
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
font-family:"Times New Roman";}
Simple test called acquiescent current drain test
Disconnect the positive terminal of the battery.
Place a 20 amp meter inline, (poss to battery lead, neg to battery)
And see if you have any more than a few milliamps of drainage for radio memory etc.
Anything like 0.25 amps or more and you have a component on the car that is ON.
Boot light, is it going out? 5w bulb in a 12v circuit = 2.4amps so a 75ah battery = 30 hours to dead flat.
Do you have electric windows? Is one still trying to close as in stuck relay or switch? (Had that on a porker 924) put your ear to the doors and listen for the hum.
Test 2, fully charge battery but leave car with alternator wires disconnected. Still goes flat, it’s on the car, no? It’s the alternator.
Hope that helps, Pete
Posted on Mar 31, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Mar 20, 2014 | 2007 Mazda 3 1.6
Apr 06, 2013 | 2003 Volkswagen Passat
Jan 14, 2013 | Cars & Trucks
Dec 25, 2012 | 2005 Ford Taurus
Jan 23, 2012 | Cars & Trucks
May 25, 2011 | 1999 Ford Taurus
not starting or turning over indicates towards multiple possibilities. It can
be issue with battery or weak battery. But if battery checks out ok, then it
can be starter issue or faulty alternator or problem with low fuel pressure or
no spark at spark plugs due to dirty spark plugs or faulty ignition
coil or injectors getting cracked or dirty and needs to be cleaned.
confirm the problem, the basic troubleshooting is required.
this link below and follow the troubleshooting:------
This will help.
Dec 14, 2009 | 1990 BMW 3 Series
Oct 17, 2009 | 2003 Renault 181
Apr 15, 2009 | 2001 Chevrolet Monte Carlo
161 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: