SPONSORED LINKS

Cranking but no start

Tiny
ALAIN LEBRASSE
  • MEMBER
  • 2002 VOLKSWAGEN PASSAT
  • 1.9L
  • 4 CYL
  • 2WD
  • MANUAL
  • 147,500 MILES
Hi, I am new here and my car is cranking but not starting. Check wiring to crankshaft sensor and getting 2.5 volts on all three pins what should I do?
Friday, April 12th, 2019 AT 12:15 PM

6 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

This sounds to me like your vehicle's Crankshaft Position Sensor (CKP) sensor has a short in it. The middle wire on the connector is the ground wire and should have no voltage to it at all. In the diagrams down below I have included a factory diagnostic test for the CKP sensor. I have also included a few links for you to go to below as well:

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Please go through these guides and the information in the diagrams down below and get back to us with what you are able to find out, please.

Thanks,
Alex
2CarPros
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Friday, April 12th, 2019 AT 12:57 PM
Tiny
ALAIN LEBRASSE
  • MEMBER
  • 5 POSTS
Well, you are right. I do have a short in my sensor itself.
Was this
answer
helpful?
Yes
No
Sunday, April 14th, 2019 AT 11:52 AM
Tiny
ALAIN LEBRASSE
  • MEMBER
  • 5 POSTS
Hi alex got a new crankshaft sensor and still no start can it be a faulty camshaft sensor and how can I test the camshaft sensor?
Was this
answer
helpful?
Yes
No
Monday, April 15th, 2019 AT 8:24 AM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

I have included the information that you requested in the diagrams down below. There are a couple of other tests that I did not include because they require the use of a dual lab scope. I have also included a link below for you to go to below.

https://www.2carpros.com/articles/camshaft-angle-sensor-replacement

Please go through these guides and get back to us with what you are able to find out, please.

Thanks,
Alex
2CarPros
Was this
answer
helpful?
Yes
No
Monday, April 15th, 2019 AT 1:30 PM
Tiny
ALAIN LEBRASSE
  • MEMBER
  • 5 POSTS
Hi, already change camshaft sensor and glow plug light still flashing on dash. Cranking but no start. I am feeling tired but don't want to lose the car, but not knowing what to do. Tomorrow a friend of mine will get the scan tool to check for faults.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, April 16th, 2019 AT 8:35 AM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

Okay, there seems to be some kind of communication issue going on between us, and I apologize for that. I understand how frustrated you are and we will get your vehicle running again, so no worries. Let's get back to the basics, and start there. Okay, an engines needs three things to start and run, fuel, spark (delivered a the proper time), and compression. So let's start with spark. I have included a link for you to go to down below:

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Please go through this guide and get back to us with what you are able to find out, please.

Thanks,
Alex
2CarPros
Was this
answer
helpful?
Yes
No
Tuesday, April 16th, 2019 AT 11:13 AM

Please login or register to post a reply.

Related Engine Not Running Content

How to fix an engine that wont start
VIDEO
How to fix an engine that wont start
Instructional repair video
Engine Not Starting
GUIDE
Engine Not Starting
Over the past 20 years at 2CarPros we have identified the top problems that are easily fixed. This guide can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE

Sponsored links