Black Sealed Box (Nosiy spinning fan/motor) below Coolant Resevoir Tank
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Joined: Jun 2007
Posts: 6
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Black Sealed Box (Nosiy spinning fan/motor) below Coolant Resevoir Tank
Dear All,
I hope someone can shed some light on a part that has gone faulty?
Basically I parked up my c32 this morning after about a 15minute run and I could hear a spinning noise from under the bonnet even after swtiching the engine off and taking the key out. The spinning noise was coming from a black box which is below the coolant resevoir near the front headlight this would not switch off even after 10 minutes and after waiting another 5 minutes I decided to unplug the power going to it. this proved a challenge in iteslf as it was so damn hot. I am in no doubt that it would of caught fire if I had left it. Could someone please advise on what this part is and how much it costs as I am sure it is faulty however I have driven the car after disconnecting this and no warning lights have appeared on the dash but I would rather know what I am dealing with before going to the dealers.
Thanks
I hope someone can shed some light on a part that has gone faulty?
Basically I parked up my c32 this morning after about a 15minute run and I could hear a spinning noise from under the bonnet even after swtiching the engine off and taking the key out. The spinning noise was coming from a black box which is below the coolant resevoir near the front headlight this would not switch off even after 10 minutes and after waiting another 5 minutes I decided to unplug the power going to it. this proved a challenge in iteslf as it was so damn hot. I am in no doubt that it would of caught fire if I had left it. Could someone please advise on what this part is and how much it costs as I am sure it is faulty however I have driven the car after disconnecting this and no warning lights have appeared on the dash but I would rather know what I am dealing with before going to the dealers.
Thanks
MBWorld Fanatic!
Joined: Jul 2004
Posts: 1,194
Likes: 2
From: Diamond Bar & Anaheim, CA
2003 C-Class Sportcoupe
Dear All,
I hope someone can shed some light on a part that has gone faulty?
Basically I parked up my c32 this morning after about a 15minute run and I could hear a spinning noise from under the bonnet even after swtiching the engine off and taking the key out. The spinning noise was coming from a black box which is below the coolant resevoir near the front headlight this would not switch off even after 10 minutes and after waiting another 5 minutes I decided to unplug the power going to it. this proved a challenge in iteslf as it was so damn hot. I am in no doubt that it would of caught fire if I had left it. Could someone please advise on what this part is and how much it costs as I am sure it is faulty however I have driven the car after disconnecting this and no warning lights have appeared on the dash but I would rather know what I am dealing with before going to the dealers.
Thanks
I hope someone can shed some light on a part that has gone faulty?
Basically I parked up my c32 this morning after about a 15minute run and I could hear a spinning noise from under the bonnet even after swtiching the engine off and taking the key out. The spinning noise was coming from a black box which is below the coolant resevoir near the front headlight this would not switch off even after 10 minutes and after waiting another 5 minutes I decided to unplug the power going to it. this proved a challenge in iteslf as it was so damn hot. I am in no doubt that it would of caught fire if I had left it. Could someone please advise on what this part is and how much it costs as I am sure it is faulty however I have driven the car after disconnecting this and no warning lights have appeared on the dash but I would rather know what I am dealing with before going to the dealers.
Thanks
Sounds like it's the air injection pump. Might be a bad relay. I'd check the relays and wiring going to the pump before you replace it. Your car will still run fine without the air injection pump for now, since it's only used for reducing emissions at cold starts. It's supposed to turn off by itself though.
If it is the air pump, it should look something like this.....
Member
Joined: Jan 2008
Posts: 233
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From: South Jersey
2002 C32 AMG
Sounds like it's the air injection pump. Might be a bad relay. I'd check the relays and wiring going to the pump before you replace it. Your car will still run fine without the air injection pump for now, since it's only used for reducing emissions at cold starts. It's supposed to turn off by itself though.
If it is the air pump, it should look something like this.....
If it is the air pump, it should look something like this.....
Thread Starter
Newbie
Joined: Jun 2007
Posts: 6
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Thanks
You both seem spot on with your analysis. The motor has definately blown does that mean I will need to replace the relay as well as the pump?
Could you also advise me what C.E.L means and if this is a known issue does MB compensate towards replacement? Do they really cost £875 new?
Once again thanks for your all your help I really appreciate it!
MBWorld Fanatic!
Joined: Jun 2007
Posts: 2,949
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From: Philadelphia, PA
2008 A8L, 2002 996TT X50, 2009 X5
Thanks for all your help guys!
You both seem spot on with your analysis. The motor has definately blown does that mean I will need to replace the relay as well as the pump?
Could you also advise me what C.E.L means and if this is a known issue does MB compensate towards replacement? Do they really cost £875 new?
Once again thanks for your all your help I really appreciate it!
You both seem spot on with your analysis. The motor has definately blown does that mean I will need to replace the relay as well as the pump?
Could you also advise me what C.E.L means and if this is a known issue does MB compensate towards replacement? Do they really cost £875 new?
Once again thanks for your all your help I really appreciate it!
MB might take care of you - do you have a good relationship with your SA (Service Advisor)? Mine went out and I was just barely out of warranty time-wise, but was still well under the mileage threshold; MB offered to replace the parts for free if I'd pay the labor. Saved me quite a bit - I think out-the-door I paid $300 or so.
Member
Joined: Jan 2008
Posts: 233
Likes: 0
From: South Jersey
2002 C32 AMG
Thanks for all your help guys!
You both seem spot on with your analysis. The motor has definately blown does that mean I will need to replace the relay as well as the pump?
Could you also advise me what C.E.L means and if this is a known issue does MB compensate towards replacement? Do they really cost £875 new?
Once again thanks for your all your help I really appreciate it!
You both seem spot on with your analysis. The motor has definately blown does that mean I will need to replace the relay as well as the pump?
Could you also advise me what C.E.L means and if this is a known issue does MB compensate towards replacement? Do they really cost £875 new?
Once again thanks for your all your help I really appreciate it!
Thread Starter
Newbie
Joined: Jun 2007
Posts: 6
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Service A
CEL = "Check Engine Light" - just a common internet abbreviation.
MB might take care of you - do you have a good relationship with your SA (Service Advisor)? Mine went out and I was just barely out of warranty time-wise, but was still well under the mileage threshold; MB offered to replace the parts for free if I'd pay the labor. Saved me quite a bit - I think out-the-door I paid $300 or so.
MB might take care of you - do you have a good relationship with your SA (Service Advisor)? Mine went out and I was just barely out of warranty time-wise, but was still well under the mileage threshold; MB offered to replace the parts for free if I'd pay the labor. Saved me quite a bit - I think out-the-door I paid $300 or so.
I have followed all your guys advise and have diconnected it for the time being and I also have had no C.E.L so far I have driven it for about 45 minutes in total since disconnecting the air pump therefore it cannot be that important however I am a little concerened that it is not reporting a fault with this part disconnected as I did not get C.E.L error when my IC pump went last year...So I would appreciate if someone can confirm if the CEL would occur if the Air Filter is disconnected
Thanks
Last edited by sunnyk; Nov 1, 2008 at 12:57 PM.
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Member
Joined: Jan 2008
Posts: 233
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From: South Jersey
2002 C32 AMG
I have my service A booked for this Wednesday with my mb dealer so I am hoping they will sort out the issue as Eleventeen is stating that this is no random failure and that MB are aware of this issue.
I have followed all your guys advise and have diconnected it for the time being and I also have had no C.E.L so far I have driven it for about 45 minutes in total since disconnecting the filter therefore it cannot be that important however I am a little concerened we it si not reporting a fault with this part disconnected as I did not get C.E.L error when my IC pump went last year...So I would appreciate if someone can confirm if the CEL would occur if the Air Filter is disconnected
Thanks
I have followed all your guys advise and have diconnected it for the time being and I also have had no C.E.L so far I have driven it for about 45 minutes in total since disconnecting the filter therefore it cannot be that important however I am a little concerened we it si not reporting a fault with this part disconnected as I did not get C.E.L error when my IC pump went last year...So I would appreciate if someone can confirm if the CEL would occur if the Air Filter is disconnected
Thanks
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Member
Joined: Jan 2008
Posts: 233
Likes: 0
From: South Jersey
2002 C32 AMG
I have my service A booked for this Wednesday with my mb dealer so I am hoping they will sort out the issue as Eleventeen is stating that this is no random failure and that MB are aware of this issue.
I have followed all your guys advise and have diconnected it for the time being and I also have had no C.E.L so far I have driven it for about 45 minutes in total since disconnecting the filter therefore it cannot be that important however I am a little concerened we it si not reporting a fault with this part disconnected as I did not get C.E.L error when my IC pump went last year...So I would appreciate if someone can confirm if the CEL would occur if the Air Filter is disconnected
Thanks
I have followed all your guys advise and have diconnected it for the time being and I also have had no C.E.L so far I have driven it for about 45 minutes in total since disconnecting the filter therefore it cannot be that important however I am a little concerened we it si not reporting a fault with this part disconnected as I did not get C.E.L error when my IC pump went last year...So I would appreciate if someone can confirm if the CEL would occur if the Air Filter is disconnected
Thanks
