Car will turn over but not start occasionally

Tiny
STEVEWALLEY7
  • MEMBER
  • 2001 VOLKSWAGEN PASSAT
  • 1.8L
  • 4 CYL
  • TURBO
  • FWD
  • MANUAL
  • 153,400 MILES
Check engine reads
17536 system too lean
16706 rpm sensor
G28 no signal intermit
Error in mapped cooling system check
Temp sensor / thermostat
Car runs and drives fine only issue is won't start
First to second try, starts third try
Temp Gage's works and car is not over heating
When I started it in the morning it fired up fine
But second time I started it an hour later didn't work
Feed back is much appreciated thank you
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Sunday, June 14th, 2015 AT 1:16 PM

11 Replies

Tiny
KEN
  • ADMIN
Hi Stevewalley7,

It sounds like a classic crankshaft angle sensor shorting out, but we should do some testing before replacing it to make sure we are barking up the right tree, when it doesn't start we need to check for fuel pressure and ignition spark, please follow these links to start,

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

and

http://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Please let me know what you find :-)

Best, Ken
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Friday, June 19th, 2015 AT 12:11 PM
Tiny
STEVEWALLEY7
  • MEMBER
I will check those asap and what about the other codes
Or could that one cause those to malfunction
Another person thought it was a speed sensor and
Mass air flow sensor what do you think?
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Sunday, June 21st, 2015 AT 3:48 AM
Tiny
KEN
  • ADMIN
Hello Stevewalley7,

The code that really stands out is the crank angle sensor engine rpm code, this sensor will cause all kinds of problems. I would try replace the crankshaft angle sensor and see what happens, follow this link for more info

http://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

its not the same as your, but gives a general idea

Best, Ken
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Sunday, June 21st, 2015 AT 10:07 AM
Tiny
STEVEWALLEY7
  • MEMBER
Okay I will try that. Today when I was driving the battery light came on then it said "alternator workshop!" It still drove 30 miles home after that happened and after driving a while the battery light went off do you think this has something to do with the crank shaft angle sensor
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Sunday, June 21st, 2015 AT 8:16 PM
Tiny
KEN
  • ADMIN
Hi Stevewalley7,

That sounds like the alternator is failing, boy when it rains to pours! whilethe engine is running check the voltage output,, here is a guide which can help you

http://www.2carpros.com/articles/how-to-check-a-car-alternator

Let me know what you find

Best, Ken
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Monday, June 22nd, 2015 AT 9:58 AM
Tiny
STEVEWALLEY7
  • MEMBER
Battery, alternator and starter are all good I took it to advanced and they did testing.
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Monday, June 22nd, 2015 AT 11:01 AM
Tiny
KEN
  • ADMIN
Hi Stevewalley7

It could be related to the crank angle sensor since that is the most relevant code, most things that says workshop are computer sensor related lets start by replacing the CKS (crankshaft angle) sensor.

Let me know what happens

Best, Ken
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Monday, June 22nd, 2015 AT 8:55 PM
Tiny
STEVEWALLEY7
  • MEMBER
It over heated on me and I took it in the guy fixed it and said I had a bad temp sensor and it has not ever heated and battery and check engine lights still on also the alternator workshop! Light goes off every once in a while but as I said I had tests ran and the starter battery and alternator are fine the mechanic I just took it to didnt check the codes or reset them should I just buy a scanner was thinking of getting a vag obd2 any advice helps thank you for everything
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Wednesday, June 24th, 2015 AT 1:19 PM
Tiny
STEVEWALLEY7
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Has not over heated since*******
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Wednesday, June 24th, 2015 AT 1:21 PM
Tiny
STEVEWALLEY7
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Also which code shows crank shaft angle sensor?
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Wednesday, June 24th, 2015 AT 1:27 PM
Tiny
KEN
  • ADMIN
Hi Stevewalley7

The code 16706 rpm sensor, is the crankshaft angle sensor.

Please let me know.

Best, Ken
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Wednesday, June 24th, 2015 AT 2:02 PM

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