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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 09-06-2012, 02:09 PM
99BMW323 99BMW323 is offline
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vanos on no vanos

got a check engine light today,on my way to work. had my friend across the street pull codes for me,here's what we got p1253,p0420,p0456

p1253 control vanos position, exhaust camshaft

p0420 cat-conv efficiency bank one

p0456 minor leak-e-vap system.

myself im leaning to the vanos because i dont think it has even been rebuilt or replaced. but on the other hand i could see it beaging the cam sensor. but i


heres what the car is doing now...has a really frim up shift checked trans fluid already-clean&full
seams kinda bogged under 3000rpm. found no trans codes in memory.


99 323i sport 208xxx miles
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  #2  
Old 09-06-2012, 02:48 PM
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Sounds like camshaft position sensor on exhaust side. But I'm no mechanic. It's cheap and extremely easy to change out yourself.
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  #3  
Old 09-06-2012, 03:33 PM
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Your VANOS seals are *definitely* toast by now, and leaky seals can trigger a false CPS code.
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  #4  
Old 09-06-2012, 04:23 PM
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Quote:
Originally Posted by 99BMW323 View Post
got a check engine light today,on my way to work. had my friend across the street pull codes for me,here's what we got p1253,p0420,p0456

p1253 control vanos position, exhaust camshaft

p0420 cat-conv efficiency bank one

p0456 minor leak-e-vap system.

myself im leaning to the vanos because i dont think it has even been rebuilt or replaced. but on the other hand i could see it beaging the cam sensor. but i


heres what the car is doing now...has a really frim up shift checked trans fluid already-clean&full
seams kinda bogged under 3000rpm. found no trans codes in memory.


99 323i sport 208xxx miles
You surely need VANOS seals, but it isn't the cause of your codes. Replace the EXHAUST cam sensor and then see if the cat code doesn't go away too. The evap leak is likely the evap purge valve or the large charcoal cannister under your passenger side rear trunk area.
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now, go burn your Man Card, and buy yourself a Camry....
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  #5  
Old 09-07-2012, 06:38 AM
99BMW323 99BMW323 is offline
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i plan on doing the VANOS i have been reading up on rebuilding them, im not new to working on cars,im just new to bmw. called a local shop,to see what they would want to rebuild em...was told that that wasnt my prob. witch could be right,but after reading about the o rings and how the cars act when there bad,i know with out a dought that they need rebuild.

this maybe a stupid question,but does any one have a pic of where the exhaust cam sensor is? i think i have a good ideal already just want to make dang sure of it.
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  #6  
Old 09-07-2012, 07:29 AM
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smolck smolck is offline
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Quote:
Originally Posted by 99BMW323 View Post
i plan on doing the VANOS i have been reading up on rebuilding them, im not new to working on cars,im just new to bmw. called a local shop,to see what they would want to rebuild em...was told that that wasnt my prob. witch could be right,but after reading about the o rings and how the cars act when there bad,i know with out a dought that they need rebuild.

this maybe a stupid question,but does any one have a pic of where the exhaust cam sensor is? i think i have a good ideal already just want to make dang sure of it.
How bout a video?

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now, go burn your Man Card, and buy yourself a Camry....
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  #7  
Old 09-07-2012, 07:36 AM
99BMW323 99BMW323 is offline
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works like a charm..sorry for a stupid question. and just so you know thats the sensor i thought it was. you wouldnt happen to know what allen socket that takes do ya?
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Last edited by 99BMW323; 09-07-2012 at 08:01 AM.
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  #8  
Old 09-07-2012, 12:03 PM
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I like how I posted the issue the first reply but no one cares and watch it'll be what I said it was lol.
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  #9  
Old 09-07-2012, 12:06 PM
99BMW323 99BMW323 is offline
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oh i plan on doing that 1st,was just wanting your guys thought on it as well
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  #10  
Old 09-07-2012, 12:06 PM
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MalibuMafiaV MalibuMafiaV is offline
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Quote:
Originally Posted by 99BMW323 View Post
oh i plan on doing that 1st,was just wanting your guys thought on it as well
Yeah it's a cheap easy fix. But as other said your vanos seals are definitely bad to. Luckily doing the vanos seals isn't to hard. it's just a bit messy and annoying.
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BMW 2006 M5 - REALLY LOUD
Audi S4 2000 Stage 3 - Dat turbo spool
BMW 2000 3-series - Supercharged Because race car SOLD
Maserati 2004 M128 GT - HREs/tint/straight piped SOLD
BMW 2006 M3 - stock - SOLD
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  #11  
Old 09-07-2012, 12:11 PM
99BMW323 99BMW323 is offline
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yeah it dont look to be that hard to do the vanos,and as far as i can tell i dont think i need any special tools.
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  #12  
Old 09-07-2012, 12:15 PM
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MalibuMafiaV MalibuMafiaV is offline
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Quote:
Originally Posted by 99BMW323 View Post
yeah it dont look to be that hard to do the vanos,and as far as i can tell i dont think i need any special tools.
na you dont. An exacto blade will help taking the old seels off. That's all the advice I have lol.
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Audi S4 2000 Stage 3 - Dat turbo spool
BMW 2000 3-series - Supercharged Because race car SOLD
Maserati 2004 M128 GT - HREs/tint/straight piped SOLD
BMW 2006 M3 - stock - SOLD
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  #13  
Old 09-07-2012, 03:45 PM
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Quote:
Originally Posted by 99BMW323 View Post
yeah it dont look to be that hard to do the vanos,and as far as i can tell i dont think i need any special tools.
I do VANOS rebuilds for basically cost of materials. Includes hot tanking, cleaning, polishing, rebuilding seals, VANOS gasket, new bolts and washers, and shipping back to you. All you'd have to do is bolt it on and go.

PM me if interested.
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now, go burn your Man Card, and buy yourself a Camry....
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  #14  
Old 09-08-2012, 02:00 PM
chansta chansta is offline
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Quote:
Originally Posted by 99BMW323 View Post
got a check engine light today,on my way to work. had my friend across the street pull codes for me,here's what we got p1253,p0420,p0456

p1253 control vanos position, exhaust camshaft

p0420 cat-conv efficiency bank one

p0456 minor leak-e-vap system.

myself im leaning to the vanos because i dont think it has even been rebuilt or replaced. but on the other hand i could see it beaging the cam sensor. but i


heres what the car is doing now...has a really frim up shift checked trans fluid already-clean&full
seams kinda bogged under 3000rpm. found no trans codes in memory.


99 323i sport 208xxx miles
all 3 codes are a problem of its own. changing the exhaust cam sensor will not repair your cat efficiency code. cat converter efficiency is measured by post cat o2 sensors. so its either the cat or the post cat o2 sensor that has an issue (you'll want to look at the o2 sensor values with car warmed up and idling)

as for the evap code goes, check if your gas cap is sealing correctly. if not, i've had many cases where the evap hoses from/to dmtl or charcoal canister being loose/cut. you will want to smoke test the system to verify the leak if it is not obvious from a visual inspection.
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