Was the E55 built for speed or status?
Ever since my tank had a major fuel leak, the car has never been the same- driving to Vegas- decided to test my car against a Jaguar coupe convertible (prev. gen body style)- while flooring it, once my car hit past 100, the car quit accellerating- my passenger thought I was joking- brought it to Caliber motors and they said it was bad gas (yeah right)
Had a pump (supercharger pump?) replaced by House of Imports and the vehicle still does not feel right.
There was one time I picked up my car from the dealer and it ran very well but a few days later it went back to normal.
The dealer must think I am delusional but this car is not responsive. When I need to accellerate, I hit the gas, nothing happens, hit it again, it downshifts and it roars like a cheap Honda at high revs- I just want to accellerate and not look like I just floored the accellerater with the car screaming.
There was one time I picked up my car from the dealer and it ran very well but a few days later it went back to normal.
The dealer must think I am delusional but this car is not responsive. When I need to accellerate, I hit the gas, nothing happens, hit it again, it downshifts and it roars like a cheap Honda at high revs- I just want to accellerate and not look like I just floored the accellerater with the car screaming.
Is it normal for the rpm to be slightly above 1K in all gears (except 5th) while cruising with foot off accellerator- it almost seems like this could also be an issue since the engine has to rev from about 1200 rpm?
I barely caught up to a 4 Runner the other day.
Hopefully, the japanese manufacturers come out with some nice sports cars.
You definitely have something wrong but what exactly is anyones guess. You replaced the pump but many times air bubbles do get trapped in the system after the procedure which makes her run hot and shut off the supercharger again.
Could also be a throttle sensor problem or a host of others.
You definitely have something wrong but what exactly is anyones guess. You replaced the pump but many times air bubbles do get trapped in the system after the procedure which makes her run hot and shut off the supercharger again.
Could also be a throttle sensor problem or a host of others.
I don't understand why you are SOL if you bought the warranty. You can't take it into a dealer and have them diagnose it??? I don't get it.

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You definitely have something wrong but what exactly is anyones guess. You replaced the pump but many times air bubbles do get trapped in the system after the procedure which makes her run hot and shut off the supercharger again.
Could also be a throttle sensor problem or a host of others.
I don't understand why you are SOL if you bought the warranty. You can't take it into a dealer and have them diagnose it??? I don't get it.

After taking my vehicle to the dealer more than a handful of times, its almost pointless to go back and forth so I have nearly given up until my next visit. Its hard to get the dealer to fix my vehicle when they claim its running normal and they said there is no issues with the vehicle since there is no trouble codes- but obviously there is a problem with my vehicle or they would not have tried to fix it by replacing the pump, plug wires, a harness, etc.
My gas cap light went on here and there also (and like I told the dealer- yes, I know how to close a gas cap) and also triggered the check engine light but they would reset and say they can't duplicate. Magically the light has not come on for a while- might had something to do with the fuel nipple recall.
Don't get me wrong- I love this car and wouldn't mind an E63 when funds are available but this type of stuff is frustrating and makes me wonder if I should look into a Japanese sports car (when a real one is available).
I know how fast my car was before so I know how its suppose to drive.
I don't want to give up on the car until its running right but its not easy dealing with technicians that most likely don't have a clue.
I brought the vehicle to Fletcher Jones once- they said it was running fine. Brought it to Caliber and told it was bad gas. Brought it to HOI many times, and either they say its running fine or there is no trouble codes (but they did try to fix it several times).
I will try to get them to look at it again in 5k miles when I have to get my service done- I been over there so many times that I know the foremans name from the top of my head- Jim Felter and also their facility that is seperate from the dealership. Its not a great thing when you start to know a lot of the service writers faces.
Same issue when I had a BMW 645- SMG was terrible- but there was no fix since it was normal to be terrible (imagine starting off like a person that doesn't know how to drive stick but this was on an auto) (but the E55 is definitely not normal)- now I know why sales of the SMG only M5/6 cars are probably selling bad.

Could it be an E350 with a different badge?
Seriously qat, don't give up on that car. Take it to the guy the board members are suggesting. Especially since you have a warranty. Maybe Serg can help diagnose it for the dummies over at the dealer and they can do the work.

Could it be an E350 with a different badge?
Seriously qat, don't give up on that car. Take it to the guy the board members are suggesting. Especially since you have a warranty. Maybe Serg can help diagnose it for the dummies over at the dealer and they can do the work.
Also, I get the off the line from a stop chirp- anything more than a grandma press of the accellerater and the tires chirp- is that normal? It was kind of cool when I first got the car but now it sounds like a cheap car or like I am driving around on bald/cheap tires. I have 275mm Bridgestone RE050- wider than stock and stock did the same. And its not the supercharger belt either- as a matter of fact- unlike other owners, never heard the supercharger belt slip on mine.
Sure sounds like a heat issue even with the new pump. First few minutes are pure evil, then when she gets hot, car dies a horrible death.
Have someone check power to the pump, if yes, see if it is even coming on and running when hot. Then I would have lines flushed to make sure no air bubbles. Pop your coolant lid (black tank on the right WHEN COLD) and see if it's full or not.
Other than that or running it over to Vadim or other guys mentioned, ditch it and snag an E63 M5 or Z06. GTR sure looks sweet too eh??
At any given time, there will be 2 - 3 55ks at HMS so you can always find out the truth.
My wheels only chirp if I want them to, but that sounds like a healthy sign to me.
BTW, to stay on topic...... The car was built for status. How? By adding speed. If you are implying that the power is simple marketing, then go on to those Japanese cars.
At any given time, there will be 2 - 3 55ks at HMS so you can always find out the truth.
My wheels only chirp if I want them to, but that sounds like a healthy sign to me.
BTW, to stay on topic...... The car was built for status. How? By adding speed. If you are implying that the power is simple marketing, then go on to those Japanese cars.
Fixing up a healthy stock vehicle is much different than trying to fix a sick vehicle. You can throw me some performance parts and I would be able to install it but to fix an unknown problem is much different. And even if I screwed the installation, I can back track- on an existing problem, you can't. All the solutions I hear sound very basic meaning that its would not make sense that the dealer would overlook such a thing- especially when I brought it to them more than 5 times.
And besides, I want MB to fix it because I have an extended warranty- it makes no sense to pay Serge to look at my vehicle and then go to an MB mechanic and trade words on something he should know (thats equivalent of going into a doctor's office and telling him what to prescribe (besides insisting on vicadon of course)- the dealers have access to Mercedes factory techs that have years of experience- it would make no sense to me that they can not figure it out.
At any given time, there will be 2 - 3 55ks at HMS so you can always find out the truth.
My wheels only chirp if I want them to, but that sounds like a healthy sign to me.
BTW, to stay on topic...... The car was built for status. How? By adding speed. If you are implying that the power is simple marketing, then go on to those Japanese cars.
Wouldn't be suprised if my vehicle is somehow de-tuned just like some other members have mentioned after getting their car back from the dealer. I don't think there is anything mechanically wrong with my vehicle- I think the computer programming is somehow off- or de-tuned. I remember my car use to cruise at a higher rpm- now it sits at around 1100 rpms- that does not seem like a very strong spot to accellerate from. And I don't care about the gas I save either- I bought this car for speed, not to save an extra 4 miles per gallon.


