Guest T120 Posted October 2, 2003 Report Posted October 2, 2003 I have a 99T Galaxy 1.9Tdi with 97000 on the clock. When accelerating away the revs climb to about 3,500 quite quickly then it goes flat (acceleration slows down) Anyone got any ideas or do they all do this. P.S. Can anyone tell me the route of the rear washer tube from the pump at the front to the rear of the car. signed wrinkly feet Quote
Ivor_E_Tower Posted October 2, 2003 Report Posted October 2, 2003 They don't all do that, you have a problem. Do you mean that car won't go above 3500 easily (governor problem?) or that when you then change gear, acceleration falls off? (This should't happen because by then turbo will be spinning enthusiastically). Quote
Guest T120 Posted October 2, 2003 Report Posted October 2, 2003 No! it does go above 3500 but as you put it not as enthuasticaly. It will rev to; well I've only taken it to about 4200 ish it gets there but not as quickly. If it was a motor bike I would call it a flat spot, but these usualy only happen mid range on a bike not at the end. Could it be fuel starvation. I must confess although it was ??? serviced by the dealer before I bought it I do not know how long the filter has been on. I'am new to Diesels hence all the questions. Quote
Guest ANDY FITZGERALD Posted October 3, 2003 Report Posted October 3, 2003 :lol: I HAVE 90BHP TDi SEEMS TO NOT ENJOY ACCELERATION BEYOND A CERTAIN POINT, ALMOST FEELS LIKE ITS LIMITED BY DESIGN, BUT THEN, I KINDA DONT EXPECT IT FROM THE BHP AVAILABLE TO MY RIGHT FOOT. IT IS A BIG VEHICLE... I ASSUME THE 90BHP IS UNDERPOWERED... ANY VIEWS...?? Quote
Ivor_E_Tower Posted October 3, 2003 Report Posted October 3, 2003 Sounds like you may have a governor problem. Doesn't sound like fuel starvation to me. "underpowered" will depend upon what car you drove previously - what are you comparing the Gal to? Even 90bhp engine should enable you to keep up in traffic, but you will not win the green-light grand prix! Quote
ridway Posted October 3, 2003 Report Posted October 3, 2003 Hi T120 Diesel engines do tend to feel flatter at the top end of the rev range, even turbo variants. If your new to diesel engines this is maybe what you are experiencing. You imply a knowledge of motor bikes, I would imagine that the power delivery of a bike is pretty much the same as some of the modern 16 valve petrol engines in cars. That is to say all the umph! comes with the revs. My experience with driving both big turbo charged diesels and high performance petrols, the modern 16v type, is that they feel completley different in their delivery of power. The way to confirm whether you have a problem with your diesel is to safely check out the top speed performance if possible. If your Gal reaches Ford's top mph figure and the accelaration time is close as well, then I don't think you have a problem. Alternativlely have a chat with your local ford dealer and have a drive of a similar vehicle, see how it compares. Driving a diesel can be a strange sensation if you haven't done it before. If you do have a problem I concur with the other comments that it may be a governer problem or air getting into the fuel lines or even just the throttle cable adjustment. I think a comparison is the best answer. Best of luck. Rich Quote
Guest T120 Posted October 3, 2003 Report Posted October 3, 2003 RichThanks for that, will explore the avenues. Graham Quote
Guest steven.tunnicliffe@lineone.net Posted October 4, 2003 Report Posted October 4, 2003 I concur with your comments Rich in that petrol vs diesel diving is quite different. My 2.3 petrol Galaxy behaved quite differently from my present 1.9TDi diesel Galaxy.This is my first diesel and both the acceleration and the noise I am growing accustomed to.The petrol Gal used to accelerate smoothly throughout the revs with the power feeling more towards the top end of the rev range and, in higher gear, it struggled to pick up from low revs.However at low revs the diesel Gal picks up very quickly and I would say that it picks up quicker between 25 and 60mph. She accelerates smoothly up to about 3000 revs but there is very slight flattening (and I mean slight) after the 3000/3500 mark.You are dead right when you say it's a strange sensation driving diesels if you never have before. As I said the pick up at low revs even in third gear from 15 to 50mph is quite incredible. Steve Quote
Guest T120 Posted October 8, 2003 Report Posted October 8, 2003 Found the problem sorted by a local garage called Central VW AUDI.great bunch of guys. The problem is the mass air flow meter. ;) Now this is good motoring. Did not think these engines where so lively. graham Quote
Ivor_E_Tower Posted October 8, 2003 Report Posted October 8, 2003 Did they change the mass air flow sensor (MAF?) and if so, how much was the new one?? The MAF seems to be a particular source of all sorts of grief on the VW 1.9 litre diesel engine! ..oh, and glad you got your problem sorted. Now you can enjoy the full pleasures of diesel motoring. Quote
Guest ANDY FITZGERALD Posted October 9, 2003 Report Posted October 9, 2003 ;) CAN SOMEONE FILL ME IN ON THE FUNCTION OF THE MAF SENSOR PLEASE, AND DRIVING SYMPTOMS OF A FAULTY UNIT. Quote
Guest T120 Posted October 10, 2003 Report Posted October 10, 2003 Firstly for Ivor, yes they did change MAFS and these guys at Central VW Audi charged Quote
Dave-G Posted October 12, 2003 Report Posted October 12, 2003 (edited) STREWTH! next problem i get,i hope "T120" sees it,all that boffin stuff is very well explained! I had the prob on my old allhambra(90bhp). If anybody else thinks they got the problem remove the plug and test drive the car...it goes more like it should,but uses bucket loads of fuel-so ONLY test drive and replace the plug till you can replace the unit-and you dont need to be a rocket scientist to do it. Incidently,the very helpfull Volkswares chap who supplied the unit asked if i'd had problems with my OFF-side brake light? It seems(in his words)that a frequently failing bulb,and a missaligned "2nd brakelight switch" are also apparant at the same time,and may be a contributing factor to the failure. On checking the 2nd brakelight switch I found that the one fitted WAS non-standard,and When I asked other galaxy owning taxi drivers ,they had also experienced 'bulb-switch-maf symptoms. Hmm...I'm not knocking you T120,but as i review the postings in the cold light of day..I see you went from a guy what needed help to a very informed expert in 8 days? It does sound damn good though! Edited October 12, 2003 by Dave-G Quote
Guest T120 Posted October 14, 2003 Report Posted October 14, 2003 DaveThanks for the comments much appreciated I'am glad you understood it.This being the first diesel I have owned, I'am green when it comes to their quirks. But the bit about how the MAF works is as I said, took a lot digging in the old memory banks, back to collage days when I was serving my time as an Instrument / Electrical Technician, the basics never change, but the recall does. :D Quote
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