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2009 Volkswagen Beetle stalling peridoclly when stopping whether at a traffic light or in a parking spot.

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car stall
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2.2K views 14 replies 3 participants last post by  Thejarhead  
#1 ·
I'm at my wit's end!! I am experiencing issues with my 2009 Volkswagen Beetle stalls sometimes, whether at a traffic light or in a parking spot. Despite the car only having 65K miles on it, the mechanics cannot pinpoint the issue as it never stalls on them. I have even left my car with them for a month, but no code appears for them. However, I did receive a code that occurred for me.

The following work has been done, but it has not solved the problem:
  • A new fuel pump and filter were installed
  • The crank position sensor was replaced
  • The throttle body was replaced and radiated to ECM

I received a code that read, "vehicle intermittently throws code for P0171 Fuel System Too Lean Bank 1". There was also a fault for fuel system 1 CL, but no faults were detected when scanning the mechanics.

Upon their checking, the fuel trims at idle were around 2.2% to 3.9%. A smoke check intake system was performed, and no leaks were found at the time. The crank position sensor was removed and visually inspected, but no damage was found.

Before this issue, I experienced a misfire in cylinder 4. The following steps were taken to resolve the issue:
  • The mass airflow sensor was replaced
  • The ECM was replaced
  • Loose ignition coil was fixed
_ Ignition coil connector was replaced.
 
#3 ·
As to your situation, a TON of new parts, have been "thrown", at the stalling problem; aka: the "parts cannon", sometimes this works but many times it doesn't! Now, that the dust has cleared, someone needs, to diagnose the problem correctly and pinpoint the problem, verify through testing, replace the offending part, install, verify, confirm the issue is resolved and that should be a solid fix! :)

This is a common scenario where a issue is "intermittent" doesn't happen all the time (the hardest of problems; to diagnose correctly), many end up here, after the shop can't resolve things or the owner give up on someone figuring things out; so, we need to slow down for a second, review all the work you have had done, review the trouble codes, review the parts you have changed, the brand they are and then, start diagnosing the problem correctly, through verified testing, do a process of elimination, to find the problem!

SO, where are you at PERSONALLY, as the owner of this VW; on dealing with your situation? I'm assuming you have DUMPED at TON of $, at this "shop" and now, are STILL, stuck with a "problem child", of a VW, that isn't working right and dying, like it is! :(

What type of repair shop was this, are they a VW specific shop and where are they at now with diagnosing and fixing the car? Have they given up or are you done with having them attempt to repair things?

Do YOU want to figure out things yourself; are you willing to work on the car or have help with a "mechanically inclined", family member or friend, feel confident to tackle it yourself or continue, to seek "professional help", that may or MAY NOT, fix the problem? Let us know, where you are at with this situation and we can go from there. Thanks.
 
#4 ·
As to your situation, a TON of new parts, have been "thrown", at the stalling problem; aka: the "parts cannon", sometimes this works but many times it doesn't! Now, that the dust has cleared, someone needs, to diagnose the problem correctly and pinpoint the problem, verify through testing, replace the offending part, install, verify, confirm the issue is resolved and that should be a solid fix! :)

This is a common scenario where a issue is "intermittent" doesn't happen all the time (the hardest of problems; to diagnose correctly), many end up here, after the shop can't resolve things or the owner give up on someone figuring things out; so, we need to slow down for a second, review all the work you have had done, review the trouble codes, review the parts you have changed, the brand they are and then, start diagnosing the problem correctly, through verified testing, do a process of elimination, to find the problem!

SO, where are you at PERSONALLY, as the owner of this VW; on dealing with your situation? I'm assuming you have DUMPED at TON of $, at this "shop" and now, are STILL, stuck with a "problem child", of a VW, that isn't working right and dying, like it is! :(

What type of repair shop was this, are they a VW specific shop and where are they at now with diagnosing and fixing the car? Have they given up or are you done with having them attempt to repair things?

Do YOU want to figure out things yourself; are you willing to work on the car or have help with a "mechanically inclined", family member or friend, feel confident to tackle it yourself or continue, to seek "professional help", that may or MAY NOT, fix the problem? Let us know, where you are at with this situation and we can go from there. Thanks.
The mechanic only works on Volkswagon and Audi's. They have been straightforward with each repair, saying that they were not 100% if this would fix the issue. They have had my car for probably a total of 1.5 months for the past 6 months, as I keep dropping it off to see if the code will show up for them and it never does. The issue is I need to drive out of state and have to take my car for moving. I am just hoping someone has had the same issue and can get some insight.
 
#5 ·
Well, at the end of the day; it has to be diagnosed correctly and fixed. Being a intermittent issue, it can be a tough one to figure out; I guess, you need to decide what to do. What time frame; before you are moving? One, could try to address things before moving, hopefully figure it out or get a moving van, tow the car behind it and resume, trying to figure it out later? I don't know where you live but maybe, a "fresh pair of eyes", is required to diagnose the issue correctly?
 
#6 ·
I agree, my car issue needs to be diagonsed. This issue has persisted for over 6 months now. Driving the car is currently my only option, all my stuff is in another state. I am considering taking it to the dealership, despite their initial failure to identify some issues before. It would be great if the problem could be resolved without relying on a code, as that seems like a temporary excuse for I do not know anything unless a code tells me!
 
#7 ·
So, many parts have been thrown at the car; it is hard to know, what the current issue IS! As, I noted before, a "intermittent" problem; is the hardest thing to diagnose. The previous shops "repairs", were not out of line with common parts, issues, that COULD cause the problem BUT we would call that "SHOT GUNNING" things, keep on replacing parts, hoping to find a fix and resolving the issue, trouble code, you are describing.

A number of years ago, we had a troubleshooting thread; on VWVORTEX in the New Beetle discussion area and the troubleshooting, repair attempts, went on for quite awhile. In that case, there were three different issues going on at once; which made it tough to diagnose (bad wiring to the sensor, bad ground wire, bad coil pack).

If you are not going to be "hands on" with the repairs yourself; I guess, one can only be dependant on others to fix the problem for you. I don't know, what to recommend but possibly, another VW shop, might be able to figure out the problem?

We have experience with 2.5L issues, like the random dying problem but having access to a VW scanner like VCDS by Ross Tech or some other type of scan tool and diagnosing issues yourself, would be required, for us to "help us; help you". Please advise, as to where you want to go with things; if a pro shop, I guess you need to schedule another appointment with someone, if "diy diagnostics", then we would need to start with a fresh scan for codes and start working down a list of possible problems, testing, confirm issues, do repairs, parts replacement and retest, to confirm fixes, repeat. Thanks.
 
#8 ·
So, many parts have been thrown at the car; it is hard to know, what the current issue IS! As, I noted before, a "intermittent" problem; is the hardest thing to diagnose. The previous shops "repairs", were not out of line with common parts, issues, that COULD cause the problem BUT we would call that "SHOT GUNNING" things, keep on replacing parts, hoping to find a fix and resolving the issue, trouble code, you are describing.

A number of years ago, we had a troubleshooting thread; on VWVORTEX in the New Beetle discussion area and the troubleshooting, repair attempts, went on for quite awhile. In that case, there were three different issues going on at once; which made it tough to diagnose (bad wiring to the sensor, bad ground wire, bad coil pack).

If you are not going to be "hands on" with the repairs yourself; I guess, one can only be dependant on others to fix the problem for you. I don't know, what to recommend but possibly, another VW shop, might be able to figure out the problem?

We have experience with 2.5L issues, like the random dying problem but having access to a VW scanner like VCDS by Ross Tech or some other type of scan tool and diagnosing issues yourself, would be required, for us to "help us; help you". Please advise, as to where you want to go with things; if a pro shop, I guess you need to schedule another appointment with someone, if "diy diagnostics", then we would need to start with a fresh scan for codes and start working down a list of possible problems, testing, confirm issues, do repairs, parts replacement and retest, to confirm fixes, repeat. Thanks.
Do you sell Torx Star 5 Point, Driver Bit Set-
 
#9 ·
I got a bit for my 5 lobe tamper resistant maf sensor screws; it was a CTA brand and it worked fine.

@ my local PepBoys CTA Tools Part # 9635 (5 Point Tamper Proof TORX PLUS 1/4 socket/bit: T25 size) for $5.



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#10 ·
I don’t know which “torx” fasteners you are referring to; what bolts are you working with on your VW specifically?


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#14 ·
Assuming the bit is the same as my 2002 New Beetle Turbo S 1.8T:

Image



CTA Tools - 9685 - Specifications
Order Part Number CTA9685
Item Description: SOCKET T25 TAMPER TORX 5 POINT

CTA Tools Tamper Proof Torx Socket, 5 Point, T25, 1/4" Drive https://a.co/d/4Ycg7Cr


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#15 ·
Tamper proof torx are different than regular torx bits. Tamper proof torx have a small hole in the end of the bit, because the torx slot it fits into has a small post in the middle. Like the MAF screw often has. I found a cheap set of tamper proof torx at auto zone. Any auto parts store should have a set Napa, orielys, carquest, etc.