Engine turns over but will not start

Tiny
MACCPAKK
  • MEMBER
  • 2003 VOLKSWAGEN PASSAT
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 38,000 MILES
Just put in new battery in 2003 Passat, V6 2.8L. Engine turns over but will not start. Car has been outside in -20 degree weather for 2 days. New battery purchased from VW dealer was changed on second day. After a couple of start tries there is noticeable gas smell. Gas tank is 3/4 full. All fuses are good including one for fuel pump. All appropriate dashboard lights work during engine turnover.

Already Tried:
Tried to start for 45 - 60 seconds w/o touching gas pedal, engine just turns over.
Also, tried to start for 45 - 60 seconds with gas pedal pushed to the floor, again, engine just turned over w/o starting.

In addition, removed fuel pump fuse, turned over engine with gas pedal pushed to floor. Once engine sounded like it was going to start, put fuse back in. However, after 3 tries with this procedure, it still did not start. It did however, advance to some engine combustion, but just short of starting.

Thanks,

Charley
Sunday, January 18th, 2009 AT 6:51 PM

96 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hello,

This sounds like you have a crankshaft position (engine RPM) sensor that is not working. Here are two guides to help us get started by walking you thought he steps with diagrams below to show you how to replace the sensor on your car.

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

and

https://www.2carpros.com/articles/car-cranks-but-wont-start

Check out the diagrams (Below). Please let us know what happens.

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Sunday, January 18th, 2009 AT 7:17 PM
Tiny
KBOOKLESS
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  • 0 POST
I got a new sensor took me about 30 minutes to do the job.
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Thursday, November 29th, 2018 AT 12:33 PM
Tiny
AUSTIN GERHARDS
  • MEMBER
  • 1 POST
  • 2003 VOLKSWAGEN PASSAT
  • 1.8L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 179,000 MILES
Car turns over but does not start I previously replaced an anti freeze hose and took it for a test drive. During that time I think the temperature of the car got to high causing the engine to shut off. I have had the same anti freeze problems in the past and it would usually alert me "High temperature" and I would pull over with and add more antifreeze and it would always start back up, It did not alert me this time and engine shut off automatically and tried to do the same, add more anti freeze and it would not start back up this time, I feel like I fixed most of the leakage but possibly a very slow leak in the antifreeze, but I am not sure where its all going. With that said there is multiple codes, but two new codes came up that says pending codes, P0688-ECM/PCM power relay sense circuit and P0343 camshaft position sensor A-bank 1 circuit high input. I'm thinking it's P0688 code that is preventing it from starting. My question is how do I solve the problem and get get my car running again? Thanks.
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Hey Austin

Yes I would check the PCM relay because that would make it not start, I have a guide here that could help you though with further testing

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please check things out and get back to me please.

Best, Ken
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
HANSELAND
  • MEMBER
  • 2 POSTS
  • 2003 VOLKSWAGEN PASSAT
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 110,500 MILES
Once every 3 or 4 weeks the motor will not start after we have been driving the car for a while. The motor turns over all right, but will not start. If we wait 40 or so minutes, then it will start.
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
When this happens, have you checked if the engine is getting spark and fuel?
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
NWACHUKWU CHIDI
  • MEMBER
  • 1 POST
  • 2003 VOLKSWAGEN PASSAT
  • 4 CYL
  • FWD
  • MANUAL
I have a passat 2003 when you start it, it starts and goes off immediately. When idiagnosed it, I got the code p1570 what do ido
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
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P1570 = Engine Control Module Locked.

You would need to adapt Montronic Engine Control Module (ECM)-J220- to electronic anti-theft immobilozer.

Also try a capacitive discharge. This means you unhook the battery and touch the cables together and then reconnect.
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
HANSELAND
  • MEMBER
  • 2 POSTS
  • 2003 VOLKSWAGEN PASSAT
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 110,000 MILES
Hi 2 car pros
I emailed you about 2 weeks ago asking about a starting problem. I sent a $10 donation. I have not heard from you. I am awaiting your reply.
Madison Dengler
mdengler@hotmail. Com
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello

Looks like one of our master techs has already responded to you one day after your donated post. Take a look at it and follow up on the question so that tech can further assist you.


https://www.2carpros.com/forum/automotive_pictures/261618_Noname_1395.jpg

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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
  • 2003 VOLKSWAGEN PASSAT
  • 110,000 MILES
It was running drove to work 5 hours later try to start and it won't start it's been 4 moths new battery and still
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
EXOVCDS
  • MECHANIC
  • 1,883 POSTS
Does the starter turn?

Does the engine turn when the starter turns?

Does the check engine light come ON when the key is in the ON position?

Is the timing belt ok? What engine?

Is the fuel pump relay ok (if gas)?

Do you have spark and fuel spray from injectors?

A tow to a garage + 1/2hr to 1hr labor, and you will have an answer.

Thomas
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
THEDBKIDD
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  • 2002 VOLKSWAGEN PASSAT
  • 98,000 MILES
No spark or gas
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Go to this link:https://www.2carpros.com/articles/car-cranks-but-wont-start
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Check all fuses
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
STEVEWALLEY7
  • MEMBER
  • 7 POSTS
  • 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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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
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,

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

and

https://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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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
STEVEWALLEY7
  • MEMBER
  • 7 POSTS
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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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
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

https://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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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
STEVEWALLEY7
  • MEMBER
  • 7 POSTS
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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Thursday, November 29th, 2018 AT 12:34 PM (Merged)

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