Gl450 Install new Fuel Pump
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ml 500
Gl450 Install new Fuel Pump
My GL450 stalled at a stoplight and got it the dealer - the dealer said it was the CPS (crank position sensor). I got it done but then it was the fule pump and then I have heard it was both the pump and the sending unit and the total cost for it was $2300. I have seen people from here say that, that was not ti and it can be more after that - so I got the vesicle home to diagnose it myself.
Here are the videos of where I got so far -- still need the ring nut tool to remove the FP.
Here are the videos of where I got so far -- still need the ring nut tool to remove the FP.
Last edited by voidy; Nov 1, 2017 at 06:30 PM. Reason: new video
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Joined: Sep 2005
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From: s.f. bay area
s500 GL450 GL63 Z71XL Yukon 67 396 SS velle 68 Vert Camaro 69 RSSS Vert Camaro 75 Blazer
Search fuel pump location thread on MBWorld. I did a short little write up on changing the pump and sending unit. You will find that I used the lisle 63000 fuel pump tool that cost $23.00 verses the benz fuel pump tool that is about $170.00. I tried to paste the link on here but it wont allow me to link the thread
Thread Starter
Junior Member
Joined: Nov 2010
Posts: 28
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ml 500
Thanks
Search fuel pump location thread on MBWorld. I did a short little write up on changing the pump and sending unit. You will find that I used the lisle 63000 fuel pump tool that cost $23.00 verses the benz fuel pump tool that is about $170.00. I tried to paste the link on here but it wont allow me to link the thread
I did not know how to remove the rear seat but once that was done - thanks.
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ml 500
Few questions :
How long to wait after gluing the cap on?
Did you empty the fuel tank?
I was not planning on replacing the sending unit - will it still work?
Did you purchase new ring nut and rubber seal ring (green) separately - or did it come with the new filter pump?
thank you
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Joined: Sep 2005
Posts: 303
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From: s.f. bay area
s500 GL450 GL63 Z71XL Yukon 67 396 SS velle 68 Vert Camaro 69 RSSS Vert Camaro 75 Blazer
if there is fumes escaping the fuel tank, there is a problem. The fuel tank is air air tight at the pump and sending units.
I don't understand the first question. How long after what?
No. left the fuel tank full. If you look at the pictures, you can see it is almost all the way to the top. There is more vapors in the tank when it is empty. It is the vapors that is dangerous.
It is recommended that both the pump and sending unit be changed as a unit but that will be your call.
I cant remember if a new ring nut came with them or not. But I can tell you that I did not buy new ones.
I don't understand the first question. How long after what?
No. left the fuel tank full. If you look at the pictures, you can see it is almost all the way to the top. There is more vapors in the tank when it is empty. It is the vapors that is dangerous.
It is recommended that both the pump and sending unit be changed as a unit but that will be your call.
I cant remember if a new ring nut came with them or not. But I can tell you that I did not buy new ones.
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Thread Starter
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ml 500
Got this jaw pliers for this clamp
Last edited by voidy; Oct 30, 2017 at 10:18 PM. Reason: embed image
Senior Member
Joined: Sep 2005
Posts: 303
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From: s.f. bay area
s500 GL450 GL63 Z71XL Yukon 67 396 SS velle 68 Vert Camaro 69 RSSS Vert Camaro 75 Blazer
I have removed clips like that. You can cut it if you like. But, if you put an item right in between the gap, like a screwdriver, you can spread it so it opens up.
