billinjah 0 Posted September 11, 2006 Hope some one can shed some light i have an a6 2.5tdi (5 cylinder model) yesterday i clipped a kerb at about 5-6 mph real slow basically! since that point i have had no boost car runs fine although seems much louder than previously (hard to explain but it sounds the same ie. same rhythm but louder) is there a lead that mayhave popped off the wastgate or similar? i cant see anything but if you dont know what your looking for the bay is a bit of a nightmare!! any help much apreciated guys cheers for your time! Quote Share this post Link to post Share on other sites
Supercharged 2 Posted September 11, 2006 You may have pushed one of the wheels onto the intercooler pipes but i'd check the MAF first... Quote Share this post Link to post Share on other sites
billinjah 0 Posted September 11, 2006 different side to the i/c but ill check the maf as well mate cheers! Quote Share this post Link to post Share on other sites
billinjah 0 Posted September 12, 2006 well i checked to see if the maf made any difference whether it was plugged in or not and it doesnt so is that a good enough test to proove its knackered? Quote Share this post Link to post Share on other sites
dr_mat 0 Posted September 12, 2006 Sounds like it's gone into failsafe - no boost. Doubt it's the MAF, but without scanning the ECU you're not going to find it by trial and error. Quote Share this post Link to post Share on other sites
billinjah 0 Posted September 12, 2006 ok ill get on it. Quote Share this post Link to post Share on other sites
peteTDI 0 Posted September 12, 2006 well i checked to see if the maf made any difference whether it was plugged in or not and it doesnt so is that a good enough test to proove its knackered? no , if it was knackered the car will be faster with it unpluged it sounds like you have knocked a boost pipe off, check all the pipes from the turbo to the inlet manafold Quote Share this post Link to post Share on other sites
dr_mat 0 Posted September 12, 2006 All the turbo engines go failsafe when any key component is offline, which means zero boost. I watched Vince rolling road a Leon Cupra R and produce a stunning 105 bhp .. until he realised there was a sensor disconnected. Reconnect it and it produced a genuinely stunning 275 bhp .. Quote Share this post Link to post Share on other sites
billinjah 0 Posted September 12, 2006 yeah its been suggested by most people that a boost pipe has been knocked off. ive checked and cant see anything ill have to jack it up and have a good look in the light. Quote Share this post Link to post Share on other sites
Supercharged 2 Posted September 12, 2006 Bill - the other thing that may have happened is one of the VAC pipes falling off the N74 valve (BCV) - maybe 2 of these usually bolted to the engine side of the scuttle... Quote Share this post Link to post Share on other sites
billinjah 0 Posted September 13, 2006 ill check that too cheers mate! keep them coming! Quote Share this post Link to post Share on other sites
dr_mat 0 Posted September 13, 2006 Actually I'm suggesting that a sensor might be disconnected/broken. VAG-COM it too. Quote Share this post Link to post Share on other sites
billinjah 0 Posted September 13, 2006 trying to find the damn connector so i can order a lead its not in any of the normal places maybe hidden under the dash. Quote Share this post Link to post Share on other sites
Supercharged 2 Posted September 13, 2006 billinjah, what year is it? If it's not on the dash it's either near the armrest or under the bonnet in the fusebox Quote Share this post Link to post Share on other sites
billinjah 0 Posted September 13, 2006 its a 1996 mate Quote Share this post Link to post Share on other sites
peteTDI 0 Posted September 13, 2006 check the rear ash tray, next to the hand/parking brake under the rubber mat/pen holder if fitted Quote Share this post Link to post Share on other sites
