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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 01-10-2014, 07:58 PM
bddcustoms bddcustoms is offline
Bimmer Dave
Location: Bowie, MD
 
Join Date: Jul 2012
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Mein Auto: 1997 528i
Vanos question

Board,

I probably need work on my single VANOS set-up. Got the CPS code several miles ago, swapped it out From the sensor mount side, just inside the VANOS cover, it see the brownish, sludgy stuff built up, but I wasn't prepared to deal with at the time -- no tools, no time.

buttoned everything back up, but no difference. like still on.

I continued to drive it, but symptoms remained. Revs have been "up and down" on acceleration from start and at speed, and gas mileage is falling.

Then, this morning it would not start. I had run it to the store and back, returned maybe ten minutes later and it will turn over strong but won't fire up.

I'm going to my local indy mechanic -- he has been fair with me in the past on my other cars -- and I'm wondering what I should anticipate the cost range for a VANOS job to be?

Anybody have the work done recently, or have some insights?

thanks.

DTT
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  #2  
Old 01-10-2014, 08:59 PM
edjack edjack is online now
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Worn-out VANOS will not prevent the engine from starting. Something else is wrong.
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  #3  
Old 01-10-2014, 10:53 PM
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bartelbe bartelbe is offline
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What was the code or what made you believe the cam sensor was bad, when cam sensors fail the engine will still start but usually take a long crank cycle before it will fire up.
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  #4  
Old 01-11-2014, 04:08 AM
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moots moots is offline
wat's dat noise
Location: Malaysia
 
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did you replace the cam or crank pos sensor?
a bad crank position sensor will cause a not start situation.

like what others have mentinoed,bad cam sensor or stuck vanos will not....
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  #5  
Old 01-11-2014, 04:58 AM
bddcustoms bddcustoms is offline
Bimmer Dave
Location: Bowie, MD
 
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Mein Auto: 1997 528i
Ok, I hear you, and thanks for the feedback.

Next hypothesis: If its likely not the VANOS, then could it be something fuel delivery-related?
It cranks strong, but won't fire up (like its out of gas). But I had just returned from the gas station in fact, parked it for about 10 min, and went back out to take my daughter to school and it fired then stalled, then has fire since.

Even if I accidentally put a low grade of gas in, that would not cause it not to fire, and that station does not sell diesel so that accident was not possible.

Could it be some fuel delivery electronics (relays, etc) issue?

What do you think?

DTT
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  #6  
Old 01-11-2014, 05:43 AM
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Fudman Fudman is offline
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Stop right there. Before assuming the cause of the problem, identify the facts associated with the problem. Pull the codes again, post them and then let's diagnose.
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Old 01-11-2014, 06:00 AM
ingenieur ingenieur is offline
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Quote:
Originally Posted by fudman View Post
stop right there. Before assuming the cause of the problem, identify the facts associated with the problem. Pull the codes again, post them and then let's diagnose.
+1
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  #8  
Old 01-11-2014, 07:30 AM
bddcustoms bddcustoms is offline
Bimmer Dave
Location: Bowie, MD
 
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Mein Auto: 1997 528i
Quote:
Originally Posted by Fudman View Post
Stop right there. Before assuming the cause of the problem, identify the facts associated with the problem. Pull the codes again, post them and then let's diagnose.
Ok:

P0340
P0340pd

misfire
fuel
comp
evap

Again, will crank normally, but won't fire

the last time it actually fired, it idled for a bit -- 15 secs or so -- then cut out.

What are you thinking?

Thanks.

DTT
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  #9  
Old 01-11-2014, 04:57 PM
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Fudman Fudman is offline
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It is your intake cam position sensor. Here is the DIY. Use an OEM part. Did you use an OEM part the last time?. If not, replace the new non-OEM CPS (these are commonly at fault) with the old OEM one and you can probably limp along until you get a replacement OEM version.

http://www.bimmerfest.com/forums/sho...d.php?t=578316

Last edited by Fudman; 01-11-2014 at 04:59 PM.
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  #10  
Old 01-11-2014, 05:23 PM
bddcustoms bddcustoms is offline
Bimmer Dave
Location: Bowie, MD
 
Join Date: Jul 2012
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Mein Auto: 1997 528i
Quote:
Originally Posted by Fudman View Post
It is your intake cam position sensor. Here is the DIY. Use an OEM part. Did you use an OEM part the last time?. If not, replace the new non-OEM CPS (these are commonly at fault) with the old OEM one and you can probably limp along until you get a replacement OEM version.

http://www.bimmerfest.com/forums/sho...d.php?t=578316
will give it a shot.

thanks.

DTT
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Now Showing: 1997 E39 528i arctic silver on black 5sp
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  #11  
Old 01-12-2014, 01:11 AM
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bluebee bluebee is offline
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- Summary of engine cranks but won't start threads due to unspecified gas air spark compression timing problems (1)
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Each repair should invariably add to our knowledge base by the process of inexorable incrementalism.
Your job, in return, is to read the suggested threads, where the best people will always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
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