go to accelerate, car losses power, stalls, won't start?
Thread Starter
Super Member
Joined: Mar 2008
Posts: 546
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From: Chicago
15 S63, 18 Ram 2500 Cummins
go to accelerate, car losses power, stalls, won't start?
Car ran and drove great, just had the dealer replace the drivers side fuel pump sending unit last week. Well I go to accelerate and the car bogs down and no power, I was able to pull off in the parking lot and the car stalls. I go to restart it and it just cranks. I checked the fuel pump relay and fuel pump fuse and all are good. I waited a while and even disconnected the battery thinking its some glitch and still nothing. Just cranks and cranks. No check engine lights. I'm thinking that the fuel pump sending unit the dealer installed went bad, any ideas?
Thread Starter
Super Member
Joined: Mar 2008
Posts: 546
Likes: 3
From: Chicago
15 S63, 18 Ram 2500 Cummins
MBWorld Fanatic!
Joined: Jan 2009
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From: Northern VA
W211
when i car decided to cut off while taking an entrance ramp, i thought it was the cps or s/c pulley. Towed to the shop and found no fuel pressure at all from the fuel rail. CPS was changed and still no fp, ended up being the ps fuel unit connector coming loose and had a bent pin.
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did you replace both pumps?
shop recommended i do on the one failing and literally a week after replacing i had the exact same thing happen you just explained and it ended up being the passenger side pump - we have 2 in the 55's
shop recommended i do on the one failing and literally a week after replacing i had the exact same thing happen you just explained and it ended up being the passenger side pump - we have 2 in the 55's
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Thread Starter
Super Member
Joined: Mar 2008
Posts: 546
Likes: 3
From: Chicago
15 S63, 18 Ram 2500 Cummins
Wow, can't believe you just said that, the dealer called me and literally just said the same exact thing, that's it's the passenger side fuel pump. Not sure if I believe it, if these cars have two fuel pumps, it should still run on one pump, no....?
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From: Florida
A Merc
There's not a straight answer since there's many that are living with the leaking fuel and still driving around and then there's some like novae500 that the car just stops, I think it has to do with fuel pressure and voltage but what I have noticed is that they usually go out together or at approx. the same time
