TornadoRed
Top Post Dawg
- Joined
- Aug 3, 2003
- Location
- West Des Moines (formerly St Paul)
- TDI
- 2003 Jetta TDI wagon, silver; 2003 Jetta TDI wagon, indigo blue; 2003 Golf GL 5-spd, red (PARTED); 2003 Golf GLS 5-spd, indigo blue (SOLD); 2003 Jetta TDI wagon, Candy White (SOLD)
No. The MAF sensor measures clean fresh air being pulled into the engine. The EGR valve regulates exhaust gases.Great thread!! Learned much!
Being new here I have a couple of questions. I am dealing with a '06 Jetta.
1) Does MAF sensor have anything to do with EGR valve?
Many questions about VAG-COM (aka VCDS) will be answered here: http://www.ross-tech.com/vag-com/vag-com-faq.php2) what is a VAG-COM? Does it read engines codes on a TDI? If so how much do they cost and where can I get one? Are they worth having one?
The hardware is cheap -- a cable from the OBD port to your laptop or tablet computer. The software is proprietary, so is the major expense. Whether you need VCDS depends on your circumstances and how convenient it is for you to have someone else check out error codes for you.
Probably not. With a bad MAF sensor you would likely experience reduced power at all RPMs. But the engine computer could be receiving bad data from other sensors -- check all vacuum hoses. And check the N75 turbo boost controller for cracks. They are relatively cheap to replace.3) Does chipping have any effect on the MAF sensor?
I am having no power until 2000 RPM and the boost does kick you back into the seat with heavy black smoke through 3rd gear. Would MAF sensor have anything to do with this.