Quote:
Originally Posted by whunter
Hello Everyone
If you have electrical problems or gremlins on any vehicle, here are the first three generic steps.
#1. Test the battery.
#2. Test the alternator.
#3. Replace all vehicle fuses with NEW, do NOT test them!
Now you are ready to go on with the serious diagnostics.
Roughly three of every ten vehicles with electrical problems or gremlins are fixed in the first three steps; you could be one of the lucky ones.
Have a great day.
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Agree 100%, this is my today experience:
I bought a 1990 W124 sedan recently. The car is fine, but a strange electric problem was present: when I turned on the main light beams, the windshield started.
Before changing the combination switch I checked the relay, resolder some dubious connections. Nothing changed with the windshield wiper.
After that, I cleaned some fuses with contact cleaner. New electric problems arose: now windows open only, didnīt close, unless I open a door (crazy).
I looked the fuses again, now with my glasses on, and discovered that they were very old and almost all have their pins extremely worn, so making bad contacts.
As there where 4 spare fuses in new condition in the fuse box, I swaped them for the ones I had cleaned (and moved) and voila!, problems dissapear.
My conclussion and advice to all W124 owners is: before panic, before changing expensive electric harnesses, before changing relays, before changing combination switches, go simple: CHANGE OLD FUSES FOR NEW ONES.
You will be happy.
Folow whunter advice !
OldBeaver