Touareg won’t start, faulty engine speed sensor - Club Touareg Forums
Reply
 
Thread Tools Display Modes
post #1 of 13 Old 03-10-2019 Thread Starter
Junior Member
 
Join Date: Mar 2019
Location: Albania/Kosovo
Posts: 20
Thanks: 0
Thanked 0 Times in 0 Posts
Touareg won’t start, faulty engine speed sensor

So ive had my 2008 touareg tdi 3.0, 233000 km for about 9 months. Its treated me really well and i have driven it a lot all over eastern europe. i noticed over the last month it was taking more cranks for it to start. i attributed it to being colder weather. halfway through my last long trip my wife and i stopped for lunch and as literally ad shes saying i love this car..it wouldnt start. it would crank but not start. next to the restaurant was a car service place so they came over and said it was the battery. i didnt think that was right but they gave it a jump and i headed to the service shop. weird. got the oil changed as it was due and had them check the battery. sure enough the battery was tested and proved good, but apparently the engine speed sensor is faulty and as a result the car would not start. admittedly im not a car expert and the local languages are not my first language so im not sure if they meant the camshaft sensor but im pretty sure they said engine speed sensor. anyways, they said they would order the part and in ten days would have it. i drove back to my village a few hours away and now predictably the car wont start. i guess my question is why is the car starting with jumper cables and is it normal to do that? i only need it to start one more time so i can drive it back to the city and get this sensor replaced.

Albania/Kosovo
drewbreezy is offline  
Sponsored Links
Advertisement
 
post #2 of 13 Old 03-11-2019
Touareg Enthusiast
 
Touareg: 2004 V8
Join Date: Oct 2006
Location: New Jersey
Posts: 232
Thanks: 0
Thanked 11 Times in 11 Posts
Often the speed/crank position sensors act up when the engine is warm/hot, so the car will start once the sensor cools off. My guess is that the time it took for you to get the jumper cables set up was enough to let the sensor cool off.
johnk is offline  
post #3 of 13 Old 03-11-2019
Junior Member
 
BenF's Avatar
 
Touareg: 2005 V6
Join Date: Jun 2018
Location: Perth, Western Australia
Second Vehicle: is not a VW
Posts: 10
Thanks: 1
Thanked 0 Times in 0 Posts
Yeah, crank angle sensor usually stuffs up while you're driving. Not so much hard-starting symptoms. Almost take a guess with fuel pump maybe?

Ben.
BenF is offline  
Sponsored Links
Advertisement
 
post #4 of 13 Old 03-11-2019
Touareg Mechanic
 
Touareg: 2004 V6
Join Date: Aug 2017
Location: France
Second Vehicle: Still looking
Posts: 1,265
Thanks: 16
Thanked 51 Times in 49 Posts
Speed sensor went kaput on mine when driving then stopping at a traffic light. waited 5mn then it started fine. a vcds scan showed sensor g28 intemittent comm. I replaced it and so far so good.
TRespect is online now  
post #5 of 13 Old 03-11-2019 Thread Starter
Junior Member
 
Join Date: Mar 2019
Location: Albania/Kosovo
Posts: 20
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by BenF View Post
Yeah, crank angle sensor usually stuffs up while you're driving. Not so much hard-starting symptoms. Almost take a guess with fuel pump maybe?

Ben.
I also thought maybe it could be the fuel pump. When I took it to the shop and
they ran their diagnostic however they definitely indicated it was the engine speed sensor.

Albania/Kosovo
drewbreezy is offline  
post #6 of 13 Old 03-11-2019 Thread Starter
Junior Member
 
Join Date: Mar 2019
Location: Albania/Kosovo
Posts: 20
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by johnk View Post
Often the speed/crank position sensors act up when the engine is warm/hot, so the car will start once the sensor cools off. My guess is that the time it took for you to get the jumper cables set up was enough to let the sensor cool off.
Im just hoping I can find a way to get it started with a jump or pray to the touareg gods that it will start once the replacement part arrives.

Albania/Kosovo
drewbreezy is offline  
post #7 of 13 Old 03-11-2019 Thread Starter
Junior Member
 
Join Date: Mar 2019
Location: Albania/Kosovo
Posts: 20
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by TRespect View Post
Speed sensor went kaput on mine when driving then stopping at a traffic light. waited 5mn then it started fine. a vcds scan showed sensor g28 intemittent comm. I replaced it and so far so good.
Once its started and running I havent had any problems of the engine cutting while driving, only the startup has given me problems. Hoping its not the full pump and Im replacing the engine sensor in vain

Albania/Kosovo
drewbreezy is offline  
post #8 of 13 Old 03-11-2019
Touareg Guru
 
Touareg: 2006 V8
Join Date: Sep 2006
Location: Wytheville VA USA
Second Vehicle: 2004 V6
Posts: 3,389
Thanks: 156
Thanked 319 Times in 279 Posts
Garage
Engine speed sensor can equal no start or random starts. It just depends. Often but not always shows up as a hot restart problem.

Crank position sensor can equal long starts, but it should still consistently long start.

If a fuel pump goes bad (you have two), it is different things depending on if you have less then 1/4 tank or more then 1/4 tank of fuel. A big fuel pump tipoff is it changes when more or less then 1/4 tank.

If fuel filter gets clogged, you will see the fuel trim constantly adding fuel.
nickyt is online now  
post #9 of 13 Old 03-11-2019
Touareg Mechanic
 
Touareg: 2004 V6
Join Date: Aug 2017
Location: France
Second Vehicle: Still looking
Posts: 1,265
Thanks: 16
Thanked 51 Times in 49 Posts
Quote:
Originally Posted by nickyt View Post
If fuel filter gets clogged, you will see the fuel trim constantly adding fuel.
Off-topic but I'm having a rich mixture error (-25 trim) and I'd like more details or info/links about this statement.
I'm looking into this issue and will be testing the fuel pumps soon.
TRespect is online now  
post #10 of 13 Old 03-11-2019
Touareg Guru
 
Touareg: 2006 V8
Join Date: Sep 2006
Location: Wytheville VA USA
Second Vehicle: 2004 V6
Posts: 3,389
Thanks: 156
Thanked 319 Times in 279 Posts
Garage
Quote:
Originally Posted by TRespect View Post
Off-topic but I'm having a rich mixture error (-25 trim) and I'd like more details or info/links about this statement.
I'm looking into this issue and will be testing the fuel pumps soon.
I have seen it add fuel when the fuel filter was clogged. No idea about it removing fuel. Dirty Air Filter or MAF comes to mind. This 3 page article discusses it.

autoserviceprofessional.com/article/94982/Fuel-trim-How-it-works-and-how-to-make-it-work-for-you?Page=2
nickyt is online now  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Club Touareg Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY - Engine Speed Sensor G28 V6 TDI P0322 Ewic33 Touareg DIY and Technical Info - DO NOT POST NEW THREADS ASKING QUESTIONS 6 11-20-2017 07:24 AM
Compilation Of Posted "Touareg Secrets" Mike General Maintenance & Repair 124 03-06-2017 02:13 PM
Just a refresher on the Secrets of the Touareg JAGERVEGAS General Maintenance & Repair 57 02-20-2014 05:31 AM
R5 Heart transplant 4ePikanini Diesel (TDI) Engines | R5, V6, V8, V10, R50 TDI engines 12 01-18-2014 05:55 AM
Recently Issued Club Touareg Press Releases Mike General Maintenance & Repair 4 02-19-2004 07:51 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome
 

VW Touareg News Delivered to your Email!

Stay up-to-date with Touareg news in your inbox.

unsusbcribe at anytime with one click

Close [X]