hanalulu126018 wrote Hello everyone Im new to this site and the benz world. I own a 80 450slc and Im having problem with fan blower that keeps blowing the fuse. Is this a ground problem Most likely it is or the fan motor itself could be bad. Ill have to look at the CD to see if it shows where the fan ground is and get back to you. )
I apprciate your input so if the fan blower is dead it would cause the fuse to blow for it. Maybe I will start with checking the voltage at the blower plug.
What exactly is wrong with yours is it the motor or the fan blades Adsit has motors at a good price. mercedes benz Parts & Accessories - mercedes blower Motors - Only
How do you know the blower is bad (there are other reasons that it might not work) If it wont run jiggle the key while you have the blower on defrost to the max and the car running for a few minutes. If it magically starts working its the ignition switch (The electrical part). Its possible to look at the wiring diagram for the plug (which contains a bunch of wire resistors) and power the blower motor
Quote Originally Posted by strife2 How do you know the blower is bad (there are other reasons that it might not work) If it wont run jiggle the key while you have the blower on defrost to the max and the car running for a few minutes. If it magically starts working its the ignition switch (The electrical part). Its possible to look at the wiring diagram for the plug (which contains a bunch of wire
Quote Originally Posted by imelmo So weve moved on to fixing the ac on the car now. We believe the blower fan is bad. I called our local NAPA and of course its special order 2k. Called mercedes Wholesale Parts not available unless I get it from Europe 1200. AutohausAZ.com shows a picture with part number if I google it but it wont bring up a price anywhere or list the part under the vehicle. Called
import duty of 2.5% based on the value of the package. Check out this link Import duty & taxes for Car parts Im still learning my way around but other members have shared some great parts links with me. There is an online EPC although its not compatible with Mac. httpwww.benzworld.orgforumsr-c1...mlpost5345471 If youre Mac based you can also find information here through MB South Atlanta Genuine mercedes-benz
Quote Originally Posted by LLUCKYX4 Im just getting too old for that ...foolishness Theres a good chance those lubed old bearings will outlast you. You just never know. My opinion is... If it aint broke dont fix it. If the fan is not blowing at an acceptable level for you then ok maybe you need to fix it. I just dont see the logic in spending over 1000 to replace a blower in a car that might be difficult
Quote Originally Posted by rowdie The only difference mightwould be the resistor pack at the firewall. The motor fans housing are the same. Pretty easy to swap out the pig tail. Only 2 wires attach to the motor. Power and ground Thanks for the follow up Rowdie. I went ahead and ordered the blower fan on ebay. I drove the car all winter with no heat but now its time to get the AC blowing again as Im in Texas and will be selling the car soon (cars without AC are tough to sell in Texas) Brian
Quote Originally Posted by rowdie The only difference mightwould be the resistor pack at the firewall. The motor fans housing are the same. Pretty easy to swap out the pig tail. Only 2 wires attach to the motor. Power and ground Found the new blower fan on the front porch a short while ago. Turns out its not quite a plug and play. But easy enough....I had to drill a hole in the side of the motor and
Quote Originally Posted by bcolins Found the new blower fan on the front porch a short while ago. Turns out its not quite a plug and play. But easy enough....I had to drill a hole in the side of the motor and slightly into one of the stationary magnets to accomadate a locating pin that locates the motor and fan assembly in the plastic enclosurecage. As you might imagine I was a bit nervous about drilling
Quote Originally Posted by rowdie Never ran into this. You should have taken pictures. I did....but they are still trapped inside my phone. Ill see if I can remedy that later. Pics of the Old and new (After drilling the new locating pin hole) blower fan assemblies
I would spin both fans by hand to be sure they are not froze up. The aux is easy but the other blower you will have to remove the cover over the firewall. Those two circuits do interact when the AC is on.
Quote Originally Posted by Brandon08 Hi. Your air conditioning was normal right Did you notice any other thing like if it was blowing hot air Its not normal if your fuse was blowing again and again. My mercedes benz 380SL AC & heater control had similar problems recently. Fill in your profile with vehicle(s) information and location. Makes it easier to assist you.
Melting or blowing a fuse is typically an indication of overload. I think maybe a short is most likely. Also if the blower motor had dry bearings wouldnt they screech like hell (or sieze). If its working then blows fuses it sounds more like a short but who knows with these electrical gremlins. You can take the whole blower motor and fan assembly out and and bench test it. In most cases the fans will
I found there are 3 30amp strip fuses under that plastic lid - marked as follows - one for the aux radiator fans one for the hardtop rear window defogger and one for the heaterac blower fan. Once I knew where it was no problem. Replaced that (obviously) blown strip fuse and viola the fan worked as it should. The fuse cost me 59 cents. Kudos to Bobterry for the location info. I do wonder why MBZ fused these like they did - how come their not in the normal fusebox under the hood
Quote Originally Posted by Rocco Vespe 1999 SL500 - My heater fan just stopped working. I Checked fuse box - no blown fuses. Can it be something other than just replacing the fan motor Thanks RRV Rocco Check this thread. you can test the wires from the connector at the aux fuse box. If there is power going through there...there is nothing left but your regulator and or blower. If there isnt any power then you start working your way back to your climate control. httpwww.benzworld.orgforumsr129...nter-side.html
There is a strip fuse for the blower motor have you check that one httpwww.benzworld.orgforumsr129...mlpost1815946
Quote Originally Posted by yka Thank you Rufus.1948 this is very good info. I was afraid to start the new sealing job now I will follow your trick. At the same time I will balance my fan I followed the Glueck Auf excellent blower instructions but somehow I succed to unbalance my fan. At the max speed my fan has a obvious vibration. I try to find better fan weight locations using an adjustable power
Quote Originally Posted by GlueckAuf Sorry youre having bad vibes bud. Cant remember if youre using a new or old motor but I believe Id remove the fans and check for radial play in the shaft see if the shaft might be bent and then test run the motor alone to ensure its not the source of the vibrations. While the bare firmly-secured motor is spinning at high speed touch a steel blade to each shaft starting
Re conditioned blower fan installed now blowing a gale had one heart stopping moment when i first turned the fan on nothing. pulled the blower out again checked everything reinstalled unit still nothing After half an hour wondering where i had gone wrong decided to check fuse number 6 had blown replaced it fan worked a treat. Thanks to everyone for there assistance couldnt have done without your help. Next project repair small radiator leak and install new condenser fan Robert
Quote Originally Posted by Rufus.1948 Re conditioned blower fan installed now blowing a gale had one heart stopping moment when i first turned the fan on nothing. pulled the blower out again checked everything reinstalled unit still nothing After half an hour wondering where i had gone wrong decided to check fuse number 6 had blown replaced it fan worked a treat. Thanks to everyone for there assistance
Thats the mechanical system much easier to work on and the most reliable. Under the bonnet in the back is a cover for the blower motor 6 or 8 screws. You will also find a square elec resistor block for the fan. Test there for power you can remove the blower motor and there are only 2 wires going directly to it. Run power to those to bench test.
Quote Originally Posted by Aussiemerc Ill look for pics later-gotta run now. Found a couple but not of the knobs- just the actual switches. My fan speed switch was kaput on one setting only but I replaced it anyway.(expensive) I would check whether the blower motor works first by bypassing all the controls. It will run on high speed only but if it runs that removes the blower as a problem. Checking
Unfortunately theres nothing to grab onto on the other side of those studs. They have a thin round head thats welded to the underside of the blower box frame. As strife2 wisely says take your time and soak em good and long. Id add to that to when loosening seems to stall (and I mean with VERY moderate torque) stop reverse your ratchet and go the opposite direction for a few degrees soak well again
Ugh. I hope Im not into that soon. My blower fan has stopped working - worked fine until last week then suddenly didnt when I took it out later in the week. The compressor definitely works - I get a little cool air through the vents while traveling - just no fan. I can also see the clutch engage when the on-off compressor switch is turned on and the engine speed adjusts appropriately. Because the compressor
Thanks Scott. Ill try that first. I did buff fuse 6 (and Ill do it again) but not the others. All the fuses involved are copper but it corrodes too. 6-13-2011 update -- Im adding the final resolution here to avoid taking this thread further off course. On Scotts recommendation I pulled all of the top row fuses to clean the brass mounts and to check the fuses for corrosion. Lo and behold when I got
Had the same problem thought it was a intermittent short but it was very simple. The fan speed is selected by several resistors located in a square box with lots of holes on RHS front of blower assembly. A bi-metallic high temperature switch protects the resistors by shorting them out. The gap of this switch may become too small over time and I fixed it by carefully pushing a flat screwdriver in the gap and increasing it.
me but working on this old car is new to me. Do I need to pull the blower motor assembly out of its little world under the hood then actually pull the electric motor out of that plastic case Sorry to ask but you may need to be a little more detailed. I know how to arrest and book people and let some go. Everything else is rocket science Might be a good idea to spend time around a reputable benz
Quote Originally Posted by bcolins The blower fan on my recently acquired 83 380SL is tight. I pulled the assembly out and it would barely turn. I then removed the dual squirrel cage and motor assembly from its black plastic case......and soaked the bushings (or bearings) with a penetrating lubricant then forcefully rotated it back and forth repeatedly. It did eventually loosen a bit but its still
I hope its as simple as adjusting the motors fan blades and tightening it down. It sure is a likely supposition as sometimes on low speed it is quiet other times it roars. Not easy bending over the engine and I cant see down inside well with the cover off. BTW can the hood be turned straight up 90 degrees like I have seen in some videos of other mercedes Carl
Quote Originally Posted by cwmoser Do you mean the clips pointed out by green arrows in the attachment Is it easy to reattach Anyone have problems doing this on a 107SL Heaven forbid I dont want to fork something up. Sometimes this could be convenient. Carl I have an earlier SL but on my 300D I think all you have to do is hold the lever on driver side only as you raise the hood to vertical. Nothing needs to be removed. And definitely only one side. It should be in the owners manual but I dont see it in my 72 manual. I should remember because I had my hood up that way on 300D all summer while working on car ADDED Looks like different models have different set-ups. And it seems that 107s dont have the hinge release that many other MB models do. Read this thread httpwww.benzworld.orgforumsr-c1...-engine-2.html
Getting the cages off was the problem. This is good. Buy the motor new on Ebay for less than 150. Search mercedes blower motor and find one for 107 or by car model.
Quote Originally Posted by Alkraut Getting the cages off was the problem. This is good. Buy the motor new on Ebay for less than 150. Search mercedes blower motor and find one for 107 or by car model. Ive ordered my new bare Bosch motor from ADSITCO.com for 134.00 less shipping. Good road