they siad the throttle response are bad i need thrttle bodies and a new alternator what dose that have to do with throttle it is not charging the throttle response correctly or something smh. idk about this i need help
@mod_man may have experience with these?
@InThrustWeTrust Actually I do. Cheers!
@mod_man great!
@InThrustWeTrust Not many Lambo/exotic questions on the forum. Glad I could help with this and appreciate the heads up. {blackemo}:hotdrink:
@mod_man when I see questions for an exotic, you’re on speed dial..
@InThrustWeTrust {black}:laugh: Well I appreciate that my friend. These cars are all....a bit different, shall we say. (Really they are a pain in the rear if you don't know what you're looking at. Some are just a pain regardless. Which is why I don't own any Italian cars myself. Lol.)
This is a common issue on the 03 -04 Murcielago. I'm guessing your friend is running a lead acid battery.
The issue you are having is low voltage while driving. In the Murcielago, this affects the throttle body because the E gear doesn't know when to engage. You may be getting a P2121 low voltage code as well.
To no surprise, the Lambo system is very complex and a change in voltage will affect acceleration amongst other things. These are NOT like normal cars and to explain how they work would take forever, but the throttle body is motor-driven so that when you hit the gas, it immediately opens MUCH faster than a conventional TB. However, low voltage conditions can fry this motor which in turn causes the TB to operate like a conventional TB, meaning it can not open fast enough to allow maximum power and you feel it clearly when driving the car. This also, of course, causes issues with the throttle position sensor (you may have a code for this) because it isn't where the computer is expecting it to be.
What you need to do is switch batteries to an AGM, or Absorbent Glass Material, battery. They are made for these cars that require a ton of charge to crank and run properly. They are expensive, but that comes with the nature of having a Lambo. In addition, the throttle body isn't cheap. Used ones I show for sale in Houston are around $1300. New ones are closer to $2000 - $2500. It is an intricate piece and unfortunately, again, parts for these cars are just expensive.
Replacing those should solve your issues though and clear any codes you may have. I would HIGHLY advise your friend to keep the car on a battery tender when not in use for any length of time as they vampire voltage from batteries quickly.
Good luck and let us know how it turns out please.
@Mod_Man It got fixed and now when he presses the throttle you can hear a squeak and now you hear this bad eeeeeee noises when he turns is that normal or is my pour steering pump on its way out? and also you can hear when he steps on the trottle its like a ch sound.
Sounds like the pump may indeed be on it's way out. Is the noise on throttle something he had not noticed before? It could just be the sound of the throttle motors firing if it is only happening at hard throttle. These cars have a few noises here and there but not all are bad.
@Mod_Man ok thanks I’ll have him get the water pump changed for him.
thanks i want to drive my friends car! without it stalling and free revving.