Cortez The Killie Killer Posted March 19, 2015 Report Share Posted March 19, 2015 I have a 93' Mercedes Benz 300CE with a front wiper that has stopped working. I replaced the fuse (#16) even though it didn't look burned out. The wiper worked for awhile (couple of weeks --- this car is not used much) & stopped again. I switched the fuse out with a #24 fuse (since that's all I had). It works with no problem (again, a couple of weeks). Can I continue to use the higher rated fuse or do I risk damaging the wiper motor if there is some issue that has blown the fuse? Link to comment Share on other sites More sharing options...
Ed J Posted March 19, 2015 Report Share Posted March 19, 2015 The fuse protects the wire, if you over size the fuse the wire can melt and that can cause other problems. It's a bad idea. Link to comment Share on other sites More sharing options...
BARhopper Posted March 19, 2015 Report Share Posted March 19, 2015 Next time it blows just stuff as much aluminum foil in the fuse slot as you can and you won't have to worry about blown wiper fuses ever again. Or, you could just fix the problem causing the blown correct fuses and not risk an electrical system meltdown by pumping too many amps through your wiring. Link to comment Share on other sites More sharing options...
iphish Posted March 19, 2015 Report Share Posted March 19, 2015 Given that it's 93 MB and a low amp fuse, say a 10 amp and you are replacing it with a15 or 20 amp, I say go for it.....you wouldn't believe how I had crap wired in much earlier cars with no problems ever. Part clips and alum foil, copper wire etc. But as the poster said above, it's blowing a fuse, could be a bad ground, over charging or the wiper motor itself could be shorting out. But something is wrong. Comes down is how much do you want to spend? 100s, unless you know a experienced mechanic familiar with the age, model and characteristics of that model, some of today's mechanics just replace everything until it works especially with the older cars. Link to comment Share on other sites More sharing options...
Shaky Posted March 19, 2015 Report Share Posted March 19, 2015 The fuse protects the wire, if you over size the fuse the wire can melt and that can cause other problems. It's a bad idea. Had a datsun pickup that had a problem with the fan. Motor was working, but no air. Took it apart and there was a crack in the hamster wheel and it wouldn't stay tight on the shaft. I epoxied it, twice. I guess being out of balance caused the fan to draw more current and i kept blowing fuses. kept upgrading fuses and finally went with foil. The fuse link would get real hot so i only operated it enough to defrost my windows. Not sure if it was the reason, but I packed the car during a blizzard and went to move it to an underground lot. The car wouldn't start, wouldn't push start, it was totally dead. Don't know if i trashed the electrical system with that trick, but I wouldn't do it again. If you are ugly you are ugly. Stop talking about inner beauty because we don't walk around with X-rays. --- Robert Mugabe Link to comment Share on other sites More sharing options...
Billybob Posted March 19, 2015 Report Share Posted March 19, 2015 I don't know about the #16 and #24 - what are the amp ratings? Anyway- you say the fuse didn't look blown? I would put that fuse somewhere and see if it really is blown, and I would not put a higher rated fuse in there, go buy the right size if you have to. If your fuse checks out, I suspect a relay is acting up. Next time the wipers don't work try swapping a relay with some other function. Link to comment Share on other sites More sharing options...
Cortez The Killie Killer Posted March 19, 2015 Author Report Share Posted March 19, 2015 Thanks. I initially used the higher fuse since the wiper stopped in the rain & that all I had. I really haven't given it another thought until this morning. The odd thing is that the previous time I changed the fuse the fuse didn't even look burned out. It not an issue of not wanting to fix the problem. I just can't run the car right in to the shop. I'll probably take it in in a few weeks for an overall look-around. The car is well maintained & has less than 40k miles. I just won't drive it in the rain. Link to comment Share on other sites More sharing options...
Cortez The Killie Killer Posted March 19, 2015 Author Report Share Posted March 19, 2015 I don't know about the #16 and #24 - what are the amp ratings? Anyway- you say the fuse didn't look blown? I would put that fuse somewhere and see if it really is blown, and I would not put a higher rated fuse in there, go buy the right size if you have to. If your fuse checks out, I suspect a relay is acting up. Next time the wipers don't work try swapping a relay with some other function. I didn't see your post b/4: I'll check the relay -- didn't think about that. Thanks Link to comment Share on other sites More sharing options...
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