1999 BMW Z3 Roadster - Popping several codes - Bimmerfest - BMW Forums



Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > Z Series > E36/7 Z3 (1996-2002)

E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

Reply
 
Thread Tools Display Modes
  #1  
Old 04-13-2019, 01:02 PM
MCASSICT MCASSICT is offline
Registered User
 
Join Date: Apr 2019
Posts: 10
Mein Auto:
1999 BMW Z3 Roadster - Popping several codes

Just bought a used 1999 BMW Z3 Roadster and after driving it for a couple of hours I could feel a slight wobble. Felt great up to then. Got it home and hooked up the scanner and generated the following codes:

P1520
P1523
P0301
P0302
P0303
P0304
P0305
P0306

Any suggestions as to most likely cause what would generate a misfire on all 6 cylinders? Would the 1520 and 1523 cause the misfires?
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 04-13-2019, 04:19 PM
NZ00Z3 NZ00Z3 is offline
Officially Welcomed to the 'Fest
Location: New Zealand
 
Join Date: Dec 2015
Posts: 255
Mein Auto: 2000 Z3 3.0i
With a warm running engine, check your fuel trims. If they are >8% you have a vacuum leak. I suspect that is your problem.
Reply With Quote
  #3  
Old 04-13-2019, 07:48 PM
MCASSICT MCASSICT is offline
Registered User
 
Join Date: Apr 2019
Posts: 10
Mein Auto:
Changed out the two positioning sensors that are referred to by the 1520 and 1523 code, still nothing. turns over but wont fire. I thought maybe since it is a 20 year old car that possibly the fuel gauge was wrong and maybe I had just ran out of gas. Went ahead and put a couple of gallons in but no luck. It did the same thing, turns over fine but wouldnt fire. So then I thought I would try and shoot some ether into the intake to see what would happen. That time it did try to fire. So it seems that maybe there is a bad relay, pump, or filter. Im not excluding a vacuum issue but one of these seem maybe to be a likely call. Any thoughts?
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old 04-13-2019, 07:50 PM
MCASSICT MCASSICT is offline
Registered User
 
Join Date: Apr 2019
Posts: 10
Mein Auto:
I might add that I had let it cool down for a couple of hours before putting fuel in and trying the ether.
Reply With Quote
  #5  
Old 04-19-2019, 01:47 PM
MCASSICT MCASSICT is offline
Registered User
 
Join Date: Apr 2019
Posts: 10
Mein Auto:
OK so Ive tried everything I can think of at this point:

Car will turn over fine but no fire:

1) Replaced both the intake and exhaust camshaft sensors based on codes 1520 and 1523, cleared codes; still turns over but no fire

2) Thought possibly the gas gauge was incorrect so put in a couple of gallons of gas; still turns over but no fire

3) Shot some starting fluid into the intake; turns over and fires for a couple of seconds

4) Disconnected battery for 30 minutes and tried restarting; turns over but no fire

4) Checked fuel pump fuses, both OK. Turned key to start and could physically hear the fuel pump spinning. Also pulled the two fuel pump fuses to confirm silent when without fuses and then tried again after re-installing fuses. Confirmed it was the pump I was hearing.

5) Replaced fuel filter; turns over but no fire

6) Depressed test valve on ejector rail (I don't have a gauge), fuel shot out about a foot in the air under high pressure. Released additional pressure until just a small amount was being released. Tried restarting again with test valve depressed and fuel shot back out at high pressure. This tells me that I am getting fuel at some high pressure to the rail; still turns over but no fire.

7) Then considered the possibility that new cam sensors from Autozone may have been faulty (I've had this happen before on another car). Swapped them out for another set; still turns over but no fire.


8) Tried again to disconnect the battery for 30 minutes; still turns over but no fire.


Any ideas would be much appreciated.....I'm running out of ideas!!!!
Reply With Quote
  #6  
Old 04-19-2019, 02:25 PM
zed3coupe zed3coupe is offline
Officially Welcomed to the 'Fest
Location: CO
 
Join Date: May 2016
Posts: 115
Mein Auto: 1999 BMW M Coupe
What engine?
__________________
1999 M Coupe.
Reply With Quote
  #7  
Old 04-19-2019, 07:24 PM
MCASSICT MCASSICT is offline
Registered User
 
Join Date: Apr 2019
Posts: 10
Mein Auto:
2.5 L

(also since my last update I have pulled two of the coils and plugs and neither appear to spark. In the process of checking the other 4)
Reply With Quote
  #8  
Old 04-20-2019, 11:11 AM
MCASSICT MCASSICT is offline
Registered User
 
Join Date: Apr 2019
Posts: 10
Mein Auto:
Well, it turns out I'm not getting spark on any of the cylinders. I'm going to go ahead and replace the crankshaft position sensor even though that was not a code the was generated...hoping its that simple and seems to be the next logical step.
Reply With Quote
  #9  
Old 04-20-2019, 12:01 PM
MCASSICT MCASSICT is offline
Registered User
 
Join Date: Apr 2019
Posts: 10
Mein Auto:
That didn't work either!!!
Reply With Quote
  #10  
Old 04-20-2019, 01:48 PM
MCASSICT MCASSICT is offline
Registered User
 
Join Date: Apr 2019
Posts: 10
Mein Auto:
Checked main relay and it is opening and closing ok.....
Reply With Quote
  #11  
Old 04-20-2019, 02:42 PM
MCASSICT MCASSICT is offline
Registered User
 
Join Date: Apr 2019
Posts: 10
Mein Auto:
OK so now I have a specific question....if this was an EWS issue, would I still be able to get the engine to turnover? I am trying to eliminate the EWS and everything I have found online seems to indicate that when the EWS is an issue, the engine won't even turn over.
Reply With Quote
  #12  
Old 04-20-2019, 04:30 PM
NZ00Z3 NZ00Z3 is offline
Officially Welcomed to the 'Fest
Location: New Zealand
 
Join Date: Dec 2015
Posts: 255
Mein Auto: 2000 Z3 3.0i
You are correct. The car will only crank when the EWS is activated.

There is also a handshake between the DME and EWS called the ISN, a number that has to be the same in both units for the DME to work. You need a BMW specific scanner to be able to get into the module to see the number. INPA is one that will do it, link below to INPA. Also a link to the procedure to align the number in the two units. Have a look to see if the number is correctly set in both units. Its a long shot, but may be your problem.

INPA
https://www.bimmerforums.com/forum/s...xperimentation

Alignment Procedure
https://www.bimmerforums.com/forum/s...ment-with-INPA

Last edited by NZ00Z3; 04-20-2019 at 04:31 PM.
Reply With Quote
  #13  
Old 04-20-2019, 04:36 PM
MCASSICT MCASSICT is offline
Registered User
 
Join Date: Apr 2019
Posts: 10
Mein Auto:
Quote:
Originally Posted by NZ00Z3 View Post
You are correct. The car will only crank when the EWS is activated.

There is also a handshake between the DME and EWS called the ISN, a number that has to be the same in both units for the DME to work. You need a BMW specific scanner to be able to get into the module to see the number. INPA is one that will do it, link below to INPA. Also a link to the procedure to align the number in the two units. Have a look to see if the number is correctly set in both units. Its a long shot, but may be your problem.

INPA
https://www.bimmerforums.com/forum/s...xperimentation

Alignment Procedure
https://www.bimmerforums.com/forum/s...ment-with-INPA

Thanks so much for the reply! I was actually just looking into INPA. Thanks for the additional links. I see on Amazon and other locations online it appears to be several different versions of IPNA. This has spurred another question I have since we are new to BMW's (This is our first). After looking up the VIN of this car I show it has the M52TU engine. In everything that I am finding I am seeing stuff for E46 but not M52. Are these two different engines or am I misunderstanding what exactly the different classifications are? Will I need to know this to get the correct INPA software?
Reply With Quote
  #14  
Old 04-20-2019, 10:11 PM
NZ00Z3 NZ00Z3 is offline
Officially Welcomed to the 'Fest
Location: New Zealand
 
Join Date: Dec 2015
Posts: 255
Mein Auto: 2000 Z3 3.0i
The M52TUB engine is the M54 Beta, so you can think of it as an M54. Any 6 cylinder E46 information is OK to use.
Reply With Quote
Reply

See More Related BMW Stories


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > Z Series > E36/7 Z3 (1996-2002)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
CSF Intercooler for E Chassis N54 & N55 ***NEW PRODUCT*** [email protected] E89 Z4 (2009 - current) 2 03-31-2019 11:17 AM
BMW Lease Rates - May 2008 LeaseCompare Ask-A-BMW-Dealer 52 06-06-2008 11:49 AM
2008 BMW 6 Series tim330i BMW News 1 06-27-2007 07:48 AM
* M6 * - Press Release from BMW Emission E63 / E64 M6 (2006 - 2010) 6 03-06-2007 07:20 AM
BMW's New Six-Cylinder Engines - In Depth sk330i General BMW Questions 7 07-19-2006 04:52 PM


All times are GMT -7. The time now is 03:16 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
© 2001- VerticalScope Inc. All rights reserved.