sidewaysbad Posted February 1, 2006 Share Posted February 1, 2006 Hi all, I'm getting a vibration through the accelerator pedal at between 2000 and 2500 revs. It's most noticable under load, any ideas? What should I check first! Cheers, Steve Link to comment Share on other sites More sharing options...
LeeT Posted February 2, 2006 Share Posted February 2, 2006 ive developed this recently but cannot track it down as you say the car has to be under load. my first thoughts would be the crank pulley but mine seems to be fine. so anyone else got any ideas? as its bloody annoying. i'll have another look round this weekend Link to comment Share on other sites More sharing options...
Suprasteve Posted February 2, 2006 Share Posted February 2, 2006 mine does this a bit since getting decats and nur spec. i put it down to harmonic frequencies (ooooh big words for me this early in the day). Link to comment Share on other sites More sharing options...
Lucifer Posted February 2, 2006 Share Posted February 2, 2006 One of Mine did this from the start, Changed the crank pulley and it was alot better, but you could still just feel it...... chenged the motor mounts... all gone! Extreme I know... but Im a perfectionist! Link to comment Share on other sites More sharing options...
LeeT Posted February 2, 2006 Share Posted February 2, 2006 what makes mine a bit more strange is that it started after going single. originally i thought it was the turbo but ive changed that for another and its the same. it does it when off boost but under load and its doing my head in. Link to comment Share on other sites More sharing options...
Lucifer Posted February 2, 2006 Share Posted February 2, 2006 Put it on a RR and you should see it very quickly. Link to comment Share on other sites More sharing options...
LeeT Posted February 2, 2006 Share Posted February 2, 2006 Put it on a RR and you should see it very quickly. how much:) pm me if you like Link to comment Share on other sites More sharing options...
Alex Posted February 2, 2006 Share Posted February 2, 2006 Does it do it in every gear at those RPM? Link to comment Share on other sites More sharing options...
LeeT Posted February 2, 2006 Share Posted February 2, 2006 Does it do it in every gear at those RPM? auto. but yes when off boost. ive been out and checked again this morning and it actually starts around 1800rpm just before the turbo starts to spool Link to comment Share on other sites More sharing options...
Alex Posted February 2, 2006 Share Posted February 2, 2006 Must be harmonics then. as you have an auto the flywheel can't be having an effect....as you don't have one. New stock crank pulley and engine mounts sounds like a good idea. Have you got any movement in any other pulley? Any of the others non stock? Link to comment Share on other sites More sharing options...
Lucifer Posted February 2, 2006 Share Posted February 2, 2006 We have just signed a deal with Interpro in Bristol to do all our tuning and rolling road work. It would be around £70+vat to do a full check and power run as you get a dyno run as well. Link to comment Share on other sites More sharing options...
LeeT Posted February 2, 2006 Share Posted February 2, 2006 Must be harmonics then. as you have an auto the flywheel can't be having an effect....as you don't have one. New stock crank pulley and engine mounts sounds like a good idea. Have you got any movement in any other pulley? Any of the others non stock? all pulleys are stock, so could be a sign of crank pulley on its way out? i'll have a good look at all pulleys and belts tomorrow Link to comment Share on other sites More sharing options...
LeeT Posted February 2, 2006 Share Posted February 2, 2006 We have just signed a deal with Interpro in Bristol to do all our tuning and rolling road work. It would be around £70+vat to do a full check and power run as you get a dyno run as well. would that include some minor tweaks on my very simple fuel controller? Link to comment Share on other sites More sharing options...
Lucifer Posted February 2, 2006 Share Posted February 2, 2006 would that include some minor tweaks on my very simple fuel controller? I'm not sure as we are in the early stages of the relationship and prices are still under review. I would have thought we could do it tho. Inspecting the crank pulley is a bit more difficult that you might think. Easiest way is from under the car, remove the under tray. I'm assuming you don't have stock boost pipes in the way. Its the rubber between the two castings that perishes. I have just fabbed up 20 Crank pulley tools for sale to use specifically with the Autos to remove it. They are £30 each include the cap bolts too. Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now