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X5 E53 (1999 - 2006)
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  #1  
Old 04-01-2017, 12:32 PM
tolulondon tolulondon is offline
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Post X5 2003 model, i have issues with the acceleratioN

Hello everyone
I am a new member of this forum, I need a help on my X5 2003 model, i have issues with the acceleration, it's kind of hesitate when I want to overtake or climb a steep hill, I have changed the engine, I have changed the fuel pump, changed the alternator but it's still the same, even when I kick down nothing changes on the power, it still accelerates slowly pls I need a help I really love this car, thanks
Also on my E60, I think I am having a transmission problem but I want to be sure, it slowly accelerates but once it changes speed then it drives normal until the next stop and gets hard to pick up again, pls I will appreciate any help I can get, thanks friends


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  #2  
Old 04-02-2017, 10:40 AM
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tim330i tim330i is online now
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I moved your question to our X5 forum. Is your check engine light on?
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  #3  
Old 04-03-2017, 02:56 AM
tolulondon tolulondon is offline
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No, just the brake light


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  #4  
Old 04-03-2017, 03:10 AM
tolulondon tolulondon is offline
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Pls sir, how do I access the X5 forum sir


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  #5  
Old 04-03-2017, 07:22 AM
gunyvw gunyvw is offline
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Quote:
Originally Posted by tolulondon View Post
Pls sir, how do I access the X5 forum sir


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you are good
we can see your question
just keep doing what you are doing now...

how long has the brake light been on
and
what type of engine do you have
also
how many miles...
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  #6  
Old 04-03-2017, 04:42 PM
tolulondon tolulondon is offline
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The brake light has been on for like 5months now not sure if it's the sensors , I have a 3.0i engine and it's clocking 190km now. Now back to my slow acceleration, I noticed it's not even raving properly and after loading it drags


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  #7  
Old 04-03-2017, 07:44 PM
gunyvw gunyvw is offline
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is raving something like rolling in neutral
'cause that's my next point
try putting the car in neutral on a hill or incline
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  #8  
Old 04-03-2017, 10:43 PM
tolulondon tolulondon is offline
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Quote:
Originally Posted by gunyvw View Post
is raving something like rolling in neutral
'cause that's my next point
try putting the car in neutral on a hill or incline


Yeah, I try to rave in neutral but it's not sharp,


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  #9  
Old 04-04-2017, 02:20 AM
gunyvw gunyvw is offline
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you say you have replaced the engine..
sounds like something is going on with the braking system
it may be engaging full time
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  #10  
Old 04-04-2017, 03:01 PM
tolulondon tolulondon is offline
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Pls explain more sir, you mean the brakes could be holding it down? Yeah I changed the engine, serviced the gear, changed the fuel pump but it's still the same, but today I witnessed a 5mins of action, as I was about to drive into the highway, it raved normal and gave me the quick acceleration I have once got used to, but as I slowed down due to a slight traffic it started again, so I don't really know and I don't want to sell it. Thanks


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  #11  
Old 04-05-2017, 06:50 PM
gunyvw gunyvw is offline
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yea that's what i mean
something with the braking system may not be right
out of curiosity ... did the engine throw a rod...
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  #12  
Old 04-06-2017, 03:51 AM
tolulondon tolulondon is offline
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Ok, will check the braking system but can the acceleration in anyway be enhanced electrically? If yes which part is responsible for that?


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  #13  
Old 04-06-2017, 06:01 AM
gunyvw gunyvw is offline
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the throttle is electronic and (wireless)
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  #14  
Old 04-06-2017, 08:22 AM
tolulondon tolulondon is offline
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Good, what I am thinking is - can a bad throttle cause the hesitation in acceleration?


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  #15  
Old 04-06-2017, 08:51 AM
gunyvw gunyvw is offline
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it sure can
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  #16  
Old 04-06-2017, 03:09 PM
tolulondon tolulondon is offline
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Umm thanks, will I just look for the complete throttle since there's no cable or is it the sensor? Or which part will I deal with specifically? Thanks for your time, I appreciate sir


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  #17  
Old 04-06-2017, 03:24 PM
gunyvw gunyvw is offline
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no
it's the complete throttle
i dont know of the rebuild process

if you are going to deal with that ...
check the gasket behind it for issues
and the wiring that leads up to it as well
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  #18  
Old 04-08-2017, 10:27 AM
tolulondon tolulondon is offline
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X5 2003 model, i have issues with the acceleratioN

Quote:
Originally Posted by gunyvw View Post
no
it's the complete throttle
i dont know of the rebuild process

if you are going to deal with that ...
check the gasket behind it for issues
and the wiring that leads up to it as well


Hello mr gunyvw i just came back from the work shop now sir, you won't believe the major cause of my X5 slow acceleration!! Although the throttle is a little bit shaky but the major cause is unbelievable "A BLOCKED EXHAUST PIPE" the catalyst is completely blocked, so we replaced the catalyst box (don't know the exact name but I hope you guys understand what I mean by catalyst box) with another X5's own and that's all, now It's unbelievably quick, thank y'all for the contributions I am very grateful, my X5 is now performing great. Once again thanks!!


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Last edited by tolulondon; 04-08-2017 at 10:56 AM.
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  #19  
Old 04-08-2017, 05:34 PM
gunyvw gunyvw is offline
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cool
thanks for getting back
so we can all learn

the exhaust system allows the engine to breath OUT
the catalytic converters turn carbon monoxide and other harmful gases into water and vapor.
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