Edmunds.com | Inside Line | Auto Observer Your Account | Help | Directory
You are here:
![[F]](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com/media/townhall/webxicons/site.gif){kind=small}
Forums
Hatchbacks Volkswagen Golf Volkswagen TDI Models
2482 messages, Last post on Dec 04, 2009 at 4:34 PM
You are in the Volkswagen Golf Forum. Your Host is pf_flyer
|
Replying to: church (Oct 30, 2007 7:33 am) To clean/test N75 - Disconnect 3 hoses from N75, mark each one so you know how they go back on. Be careful not to break the plastic nipples, then cut 1/4 inch off the end of each hose to eliminate possible holes or cracks in hose, if not new. Connect 2 wires to battery POS and NEG, touch the connector on the N75 with the wires to cycle it ON. you'll hear it clicking. get electronic contact cleaner and spray in all nipples and cycle ON. black stuff will leak out. repeat process until liquid comes out clean. it should evaporate fast. then lube with electronic parts lube. reconnect hoses to N75, reconnect plug and you are done. "what is it? " The N75 valve is simply the name given to the valve by VW. It is an electronically-conrolled air-valve which controls the signal to the VNT vanes of the turbocharger. The N75 is Pulse Width Modulated to control the vacuum signal coming out of the actuation port. Although TDIs do not have a wastgate on the turbocharger, some repair manuals refer to the the N75 as "Wastegate Bypass Regulator Valve". Here is a technical description of N75 operation. "where is it?" The n75 is located on the right side of the car just foreward of the fuel filter,on the inner fender. "how do i replace it?" Remove the 3 hoses and the electrical connector and replace it. DO NOT MIX UP THE HOSES!!! Here is a photo of N75 valve from my favorite TDI parts source. |
|
|
|
I had the misfortune of running over a chunk of snow/ice ! it poke  ed a small hole in my fuel line. I was able to cut out and replace a 4" section, however, it won't start. This is what I have done: a. bleed lines to eng. b. checked to be sure filter can is full of fuel c. checked fuel pump fuse. when we took the lines off, turned on the key, we were unable to get fuel up from tank.. am I missing anything ! BTW, I'm 100 miles from a dealer ! help boys .. 1998 vw TDI
|
|
|
Replying to: soapysails (Dec 14, 2007 4:09 pm) Good luck - it's always the dreaded problem with diesels. |
|
|
Replying to: soapysails (Dec 14, 2007 4:09 pm) The engine should start and run just fine running from that container of fuel. If that gets the engine going, then you likely have an air-leak in the system between the fuel-filter and the tank. If engine does not run - your problem is between the fuel and the engine. (lets hope your injection-pump did not run dry and self-destruct)
|
|
|
|
|
Replying to: bpeebles (Dec 14, 2007 6:04 pm) I will try both ideas in the morning and let you both know. |
|
|
|
Does anyone know if these are actually built? I've done LOTS of searching and haven't found anywhere on the web where this is an option. My next question is "why not?" Growing up in the 70's I owed several beetles throughout the years. A convertible beetle with a diesel engine is my 'dream' car that I would keep until they take my license ole blooeyes!
|
|
|
Replying to: blooeyes4u2 (Dec 27, 2007 2:54 pm) Welcome to the Forum... |
|
|
Replying to: pruzink (Apr 04, 2007 7:04 am) Thanks.
|
|
|
Replying to: trujij (Jan 23, 2008 7:35 am) (If it detected wrong-resistor-value in the original valet key, and you tried it a few times in a row, i think it might lock-out the ignition for 15 or 30 minutes. some cars do that. not sure if your VW is one such...)
|
|
|
Replying to: elias (Jan 23, 2008 12:31 pm) |
|
You are here:
Forums
Hatchbacks Volkswagen Golf Volkswagen TDI Models
New? Join Now!
Forum Tools
Search Forums
Browse by Vehicle
2010 Volkswagen New Beetle
2010 Volkswagen Golf
2011 Volkswagen Jetta
2010 Volkswagen Passat
Browse by Board
Browse by Topic
Today's Chats
