Hi guys and girls...
i have a problem :(:(
help is needed ASAp..
I drove up to see some freind slast night who live about an hour and half away... i got there fine and switched off.. when coming bk out to start the car.. it starte didling bit funny.. than settled.. i let the car warm up and than when about to move off i hear a noise like a very loud rattle ro vibration of some sort when the car is between 1-2k revs.. i opened the bonnet and couldnt see anything out of the norm but th enosie is coming from the charger area.. any help guys?? advice of what it could be??
im located in e.london so any specialists around here?? bit worried about driving it any where... and not that emchaniclaly minded to look myself... i will try and warm it up and record the nocie and location but ha any one any idea what it could be?? have i killed the charger?? it stop smaking nosie after 2k.. and drives fine after...
Thanks in advance
cheers
A few thoughts;
Probabley not the charger, they tend to go with a bang!
Could be the alternator if it's in the general charger area, that may explain the poor idle?
The fact that a noise occurs at a particular rev range is normaly to do with harmonics and resinant frequency.
this may sound weird but while iw as taking a shower.. i thought about it being the alternator as its situated directly under the charger.. and the noise does sound like from under the charger...
and again as u stated mate would be the cause of poor idle... as the car was about to cut out... all lights dimmed till i accelerated and it came back to life again... but if it was the alternator wouldnt it do it at all tiems?or is it coz the moving part at higher speeds just gets stuck and stops the rattling around??
sorry for all the ques bit of a noobie to g40s..
cheers
This may sound even more weird, (as I've just got out of the shower,) but are the drive belts taught enough, loose belts can chatter a bit, and also give poor drive to your alternator. If their original twin belts, check both as a loose or worn one could be the problem.
Ha Ha thats cool buddy im glad your thinknig of my problem and trying to help.. i gave the belts a little tug and they seam ok not loose or too tight.. im no mechanic and am clueless when it comes to engines.. but i have ears and eyes and can at least try and determine where the noise is coming from loooool... is there any way to check if the alternator is knackered??
am i right in thinknig that if i slide th ebelt off the charger and hand turn it.. and if if turns with out any noises/hardness/ thats it ok to rule it out or not??
cheers guys
You're right about checking for resistance by turning it by hand but that will only tell you about the condition of the bearings and therefore the age/general condition. You realy need to check the output volts with a multimeter to see if it's working fully.
Check the battery output when the engine is off, then start the car and see how the volts (across the battery) rise. I stand to be corrected but from memory the alternator should put out at least 13.5 Volts at idle, a healthy one more like 13.8. rev the engine and see how the volts rise if the volts improve with the revs thaen it's probably the alternator
wicked top man... im not even being able to drive the car either... bit worried about it.. taken a day off on friday to check it out and try and sort it out.. any other suggestions??
so even if the charger span properly it could still be knackered??
cheers
Quoteso even if the charger span properly it could still be knackered??
If the charger spins(or turns) without any mechanial noises or interferance, then you could be safe in saying its not shot yet, if its not been serviced for a long time then I'd recommend getting it done, as worn apex seals can liberate their retaining groove, and jam between the compressor(G-Lader) walls and cause a rapid failure, by the time you know about it your scroll and casing will most likely be unrecoverable.
Dam... also if it was the lader would it happen between low revs and after 2k revs be normnal or would it happen all the time... and happens on idle.. is whats confusing me.. if the charger was shot it owuldnt boost and respond as normal.. or would it??
chargers can be worn and still work - thats the danger really. You only really know if its got history behind it.
what work properly mate?wouldn't ther ebe a difference in power of some sort or not?sorry guys its me first g40 :(
its the bearings in the centre that wear, and the charger will spin and boost right even when these are worn - but due to increased float, the centre scroll will be rubbing against the other two halves. if it carries on doing this then the scroll will wear out and the charger will go bang!
ahh :( dammm looks like its my charger than... it was only serviced around 1000ms ago..
what can i do to prevent this happening again?
Just to clarify, everything I said was about the alternator not the charger. Who serviced the charger 1k ago?
Quote from: Raw on October 22, 2008, 06:25:50 PM
Just to clarify, everything I said was about the alternator not the charger. Who serviced the charger 1k ago?
not sure mate the previous owner had it done.. looks like its my charger tho from talking to afew other peeps... any one got one for sale ??:(:( not a happy bunny considering its my first g and only had it less than amonth.. any1 in london area wanna take alook??
cheers
i'd have a look but im in sheffield.. If it was serviced 1k miles ago it really shouldn't have gone!!
Quote from: peteg40 on October 22, 2008, 07:23:13 PM
i'd have a look but im in sheffield.. If it was serviced 1k miles ago it really shouldn't have gone!!
was my thoughts exactly.. the reason i brought it :( how much should another charger be??
dam sheffield is just a tad bit far.. thnks tho..
Wrong end of M4 fo me, though I may be in Heathrow doing some work tomorrow lunchtime ish, but I can't guarantee I'll have time as I'll be with my non-motoring ethusiast colleuge's. Can you do a vid on your phone and post it here?
yeah i got a day off tomorrow so may be able to meet u.. but will try and do a video tomorrow during day light to show the engine and the noise... and take it fromt here... but from speaking to various people thinks its the charger... best to go down the turbo route now instead of another lader??
depends, sometimes you can pick up a charger for £100-150 but then it'll need a service. Or perhaps £350-600 for a serviced one.
It may not be dead tho - get the damage looked at if needs be before condemning it. It you have some circlip pliers, side cutting pliers and some allen keys then i could talk you over dismantling it over the phone - after you've got it off the car. Either that or ship it to one of us (or g-werks) to inspect it.
i think that may be my best bit..im not that mechanically minde dbut htink its about time i started... yeah gonna prob get it off the car than i'll giv eu a shout and we cna open it up and tell me what to look for... any diagrams of how to get it out the car would be very very helpful guys...
cheers
i think there is a FAQ about how to remove it (though will be based ona mk3 - so you might have to remove a bit more on a mk5 like slam panel etc)
think it's in the FAQ section.
wicked u guys are propper helpful much appreciated...