Hard Start / No Start - Is your intercooler frozen? Check Here!

Jayg

Veteran Member
Joined
Oct 23, 2012
Location
Anchorage, AK
TDI
'12 Jetta 6MT-VW bought back as a lemon
I'm wondering if the accompanying software update was done to my car this week when the IC was installed. I have experience the partial throttle hiccups in the past on the stock tune but I have noticed more pronounced hiccups more frequently in the 15 miles or so I have driven since I got the car back. I'm wondering if that is a coincidence or not.
 

ctmoore79

Well-known member
Joined
Jul 11, 2012
Location
Morrisville, NC
TDI
2012 Golf
I'm wondering if the accompanying software update was done to my car this week when the IC was installed. I have experience the partial throttle hiccups in the past on the stock tune but I have noticed more pronounced hiccups more frequently in the 15 miles or so I have driven since I got the car back. I'm wondering if that is a coincidence or not.
That is almost exactly what happened to me. It was a missing gasket in one of the hoses for the new kit. It could also be contributed to a loose hose as well. I ended up with a fault code, in earlier posts. If you have time I would give your dealer a call and see if they can double check the hoses that were installed.
 

Jayg

Veteran Member
Joined
Oct 23, 2012
Location
Anchorage, AK
TDI
'12 Jetta 6MT-VW bought back as a lemon
That is almost exactly what happened to me. It was a missing gasket in one of the hoses for the new kit. It could also be contributed to a loose hose as well. I ended up with a fault code, in earlier posts. If you have time I would give your dealer a call and see if they can double check the hoses that were installed.
I think I'll swing by there on Friday. My car makes boost just fine and pulls strong but just partial throttle stumbling that I had in the past rarely seems to be much more apparent and frequent. I'm not sure what the software changes as far as driveability goes.
 

ctmoore79

Well-known member
Joined
Jul 11, 2012
Location
Morrisville, NC
TDI
2012 Golf
I think I'll swing by there on Friday. My car makes boost just fine and pulls strong but just partial throttle stumbling that I had in the past rarely seems to be much more apparent and frequent. I'm not sure what the software changes as far as driveability goes.
I was making good boost as well, based on my torque app (using a custom PID equation that seems to work well). I also had a rather rough Regen with the missing gasket. Much worse than any I have had in the past. Best of luck to you.
 

rocketride

Member
Joined
Jan 11, 2014
Location
Huntsville, AL
TDI
2010 JSW 95k miles
Update: Dealer said engine was indeed hydrolocked. They drained water out of the IC and pulled glow plugs to clear everything. Says it starts and runs fine now. $211 bill (including the tow) is not too bad (considering what could have been).

They say the "cold weather kit" is $980 but not needed unless I'm thinking of moving up north. But obviously it can happen here!

VWoA has not responded to my inquiry yet. I will try to push them for the kit.
 

VeeDubTDI

Wanderluster, Traveler, TDIClub Enthusiast
Joined
Jul 2, 2000
Location
La Conner, WA
TDI
2018 Tesla Model 3: 217,000 miles
Update: Dealer said engine was indeed hydrolocked. They drained water out of the IC and pulled glow plugs to clear everything. Says it starts and runs fine now. $211 bill (including the tow) is not too bad (considering what could have been).
They say the "cold weather kit" is $980 but not needed unless I'm thinking of moving up north. But obviously it can happen here!
VWoA has not responded to my inquiry yet. I will try to push them for the kit.
I'm glad they got you back on the road for a fair price. I tend to agree that the cold weather intercooler kit probably isn't a necessity in Alabama, but you'll need to keep an eye on the condensation buildup (drain it periodically) if you all continue to get cold weather like this year has brought.
 

Jayg

Veteran Member
Joined
Oct 23, 2012
Location
Anchorage, AK
TDI
'12 Jetta 6MT-VW bought back as a lemon
I'm glad they got you back on the road for a fair price. I tend to agree that the cold weather intercooler kit probably isn't a necessity in Alabama, but you'll need to keep an eye on the condensation buildup (drain it periodically) if you all continue to get cold weather like this year has brought.
I'm furthur south in Atlanta than him in Huntsville and it happened to me. If you have humidity and subfreezing temps, id say just about everywhere NEEDS these. Even a guy from FL could visit somewhere else and be stranded.
 

Locnar

Veteran Member
Joined
Apr 18, 2012
Location
NH
TDI
'13 Jetta 6MT
Funny!

Dealer knows enough about this in my part of the world that they dubbed this fix the "Quebec kit". It even says so on my invoice! :p
This made me laugh. Very funny!

I just contacted the local dealer I use for service and asked them to install this kit. I had a hard start several days ago, explained the situation to the service consultant I usually use, and they ordered the kit for me right away. No push back. It goes in for service next week, so keeping my fingers crossed that all goes well.

Glad I found this thread. I rarely check this section out since I go right to the Jetta sedan forum.
 

fredzy

Well-known member
Joined
May 25, 2010
Location
Erie, PA
TDI
2015 WRX
I was making good boost as well, based on my torque app (using a custom PID equation that seems to work well). I also had a rather rough Regen with the missing gasket. Much worse than any I have had in the past. Best of luck to you.
I have experienced similar problems to you guys - mainly a very rough regen cycle and lots of hiccups.

More significant though, is the big fuel economy hit I've taken - especially at temps below 40F. I've seen an average mileage drop of around 5-10% for the year, with as much as 20% drop below 40F. Where I used to get 48/49 mpg straight highway in the summer, I get 45 now. Where I used to get 48/49 mpg straight highway in the winter, I can not break 40.

I've taken the car to the dealer twice and asked them to check everything over, they said they looked and everything was good. I looked myself, and couldn't find anything obvious amiss. But I didn't remove my front clip or even know what to look for really (probably the same for the techs that "checked it over.") :(

Also, I asked "could the software not have been updated when the kit was installed - can you check that the software is updated?" And they said the software is up to date, and that the kit didn't require a software update anyhow. Is that true?
 

RES

Veteran Member
Joined
Sep 21, 1999
Location
TRUMBULL,CT. USA
TDI
2000 Jetta TDI, 1997 Passat (Totaled in Accident) 2010 Jetta Sportwagon TDI
I have experienced similar problems to you guys - mainly a very rough regen cycle and lots of hiccups.

More significant though, is the big fuel economy hit I've taken - especially at temps below 40F. I've seen an average mileage drop of around 5-10% for the year, with as much as 20% drop below 40F. Where I used to get 48/49 mpg straight highway in the summer, I get 45 now. Where I used to get 48/49 mpg straight highway in the winter, I can not break 40.

I've taken the car to the dealer twice and asked them to check everything over, they said they looked and everything was good. I looked myself, and couldn't find anything obvious amiss. But I didn't remove my front clip or even know what to look for really (probably the same for the techs that "checked it over.") :(

Also, I asked "could the software not have been updated when the kit was installed - can you check that the software is updated?" And they said the software is up to date, and that the kit didn't require a software update anyhow. Is that true?
I would think that there would be a mileage loss with the new kit installed at temperatures below 10 degrees C (50 degrees F) since the intercooler is not working at full capacity/efficiency at the lower temperatures when the flap moves to bypass most of the intercooler. I have the same question about the software change. Is there a software change required when the kit is installed?
 

Engineers<3Diesel

Veteran Member
Joined
Oct 7, 2011
Location
North Carolina
TDI
2012 VW Jetta TDI
Picked my car up last night and no issues. I noticed on the invoice that it was the cold weather kit and a gasket. Leads me to believe they tossed my gasket similar to what ctmoore79 ran into and when he brought his back in, they realized the mistake and had to put a new one on mine.

Either way runs great and the kit was put in outside of warranty for no charge to me. Dealer did me a solid so I have to give some credit to Leith for that one.
 

ctmoore79

Well-known member
Joined
Jul 11, 2012
Location
Morrisville, NC
TDI
2012 Golf
I am not sure about a software update. I did not see it on my invoice but I can look when I get home.

Update, my CEL comes on only when my car is not running. (when turning the key to the first position) Fault code p2459, has to do with to many Regen cycle not being normal. I assume this is because it has had a Regen every other day I have driven it because of the IC kit and it sitting and running along with lots of short trips to dealer and back. I will see if it continues to appear or goes away after a couple of longer drives on the highway.
 

Jayg

Veteran Member
Joined
Oct 23, 2012
Location
Anchorage, AK
TDI
'12 Jetta 6MT-VW bought back as a lemon
Really rough regen this morning. I'll take it in tomorrow morning and see whats up.

I would imagine there has to be some sort of software update with this. If not, I'm wondering if even a Malone stage 1 tune would get around it. It's getting really frustrating with the low throttle surging and violent regens.
 
Last edited:

rocketride

Member
Joined
Jan 11, 2014
Location
Huntsville, AL
TDI
2010 JSW 95k miles
Picked up the JSW seems to be no problems. Still haven't heard a thing from VWoA after two emails... I'll call them tomorrow.

On a side note I now know why the MFI chimes when the outside temp drops and the snowflake symbol on the temperature display means - "Danger - Your intercooler could be icing right now!"
 

VeeDubTDI

Wanderluster, Traveler, TDIClub Enthusiast
Joined
Jul 2, 2000
Location
La Conner, WA
TDI
2018 Tesla Model 3: 217,000 miles
On a side note I now know why the MFI chimes when the outside temp drops and the snowflake symbol on the temperature display means - "Danger - Your intercooler could be icing right now!"

HAH! You got that right.
 

SkeeterMark

Veteran Member
Joined
Jan 8, 2013
Location
North Branch, MN
TDI
2013 Jetta TDI 6M
For anyone looking in this thread: This is not a "oh, I hope MY car doesn't have this" type of problem.

If you have not experienced intercooler icing, it is because of 1 of these reasons:

1. You live where the temperature never, or rarely goes below freezing.

2. When your car hiccupped, or started rough, you just thought "oh, that was not cool, but it seems fine now", and you did not realize you had the issue.

3. You've been lucky to not operate your car under the conditions that cause icing/melting in the intercooler.

This is an issue for ALL 2009-2014 with the CBEA or CJAA engine code. It is not a failure of a part, which "might" happen. It is a product of the original design (as present on all affected models) in combination with certain weather/temperature conditions. If your vehicle has not had the update, your car IS subject to intercooler icing and ingesting water.

The recent cold snap should be reason enough for even those who live further south to investigate having the upgraded intercooler installed, plus if you ever travel north, you'll need it.
 

HNKS

Member
Joined
Feb 4, 2013
Location
Raleigh, NC
TDI
2013 Golf TDI
Does anyone know if the new (2015) Golf TDI will have the same design flaw. How about the GTD version that is supposedly coming our way?

I've got an appointment next week to have the kit installed. Thanks to ctmoore79 for being the beta tester on the installation here in Raleigh. The dealership is stepping up and it's much appreciated. Hopefully, no issues next week.
 

cevans

TDIClub Enthusiast, TDI Parts Ninja Vendor , w/Bus
Joined
Sep 24, 2002
Location
Hingham, MA
TDI
2015 Beetle Conv. TDI 6-Speed & 2006 E320 CDI
Okay, so this thread is 278 pages long, so I haven't combed through the whole thing to find the answer to this.

I just picked up a 2010 with 65k miles on it so this issue has my attention.

When does the icing actually occur? During operation or after?

I'm guessing it is a combination - the condensation builds up in the intercooler while driving and having super cold air super cool the intercooler. Then, when stopped, this condensation freezes up.

Fixes? Would blocking the intercooler when cold out stop the condensation, and allow the intercooler to stay warm enough to prevent moisture accumulation? It obviously wouldn't help much when parked, but if it prevented the moisture buildup in the first place it might solve/slow down the problem.
 

RES

Veteran Member
Joined
Sep 21, 1999
Location
TRUMBULL,CT. USA
TDI
2000 Jetta TDI, 1997 Passat (Totaled in Accident) 2010 Jetta Sportwagon TDI
I would also mention the fact that people with the intercooler update applied may still have issues. I had a solid hydro-lock and then several rough starts beginning in November 2013 after having TSB # 21 11 06 / 2025464 installed in April 2012.
Do you know if the intercooler kit you had installed is the latest version with the 10 degree C activation point?
 

RES

Veteran Member
Joined
Sep 21, 1999
Location
TRUMBULL,CT. USA
TDI
2000 Jetta TDI, 1997 Passat (Totaled in Accident) 2010 Jetta Sportwagon TDI
Okay, so this thread is 278 pages long, so I haven't combed through the whole thing to find the answer to this.

I just picked up a 2010 with 65k miles on it so this issue has my attention.

When does the icing actually occur? During operation or after?

I'm guessing it is a combination - the condensation builds up in the intercooler while driving and having super cold air super cool the intercooler. Then, when stopped, this condensation freezes up.

Fixes? Would blocking the intercooler when cold out stop the condensation, and allow the intercooler to stay warm enough to prevent moisture accumulation? It obviously wouldn't help much when parked, but if it prevented the moisture buildup in the first place it might solve/slow down the problem.
I am not sure there is any foolproof solution. For now I am trying to use the covers that IDparts sells for the front grill. I will also drain the passenger side intercooler hose occasionally when I suspect I may have ingested water/ice.
 

fredzy

Well-known member
Joined
May 25, 2010
Location
Erie, PA
TDI
2015 WRX
Do you know if the intercooler kit you had installed is the latest version with the 10 degree C activation point?
I'm not positive. It is the latest version of the kit as of March 2012. I suspect 0C because the crazy fuel economy issues I've had, which I associate with the intercooler bypass function somehow (possibly improper installation) only seem to occur once ambient drops under 5C.
 

kjclow

Top Post Dawg
Joined
Apr 26, 2003
Location
Charlotte, NC
TDI
2010 JSW TDI silver and black. 2017 Ram Ecodiesel dark red with brown and beige interior.
Does anyone know if the new (2015) Golf TDI will have the same design flaw. How about the GTD version that is supposedly coming our way?

I've got an appointment next week to have the kit installed. Thanks to ctmoore79 for being the beta tester on the installation here in Raleigh. The dealership is stepping up and it's much appreciated. Hopefully, no issues next week.
The new engines are set up the same way as the passat. I believe that it is an air to water not an air to air system.
 

SkeeterMark

Veteran Member
Joined
Jan 8, 2013
Location
North Branch, MN
TDI
2013 Jetta TDI 6M
I'm not positive. It is the latest version of the kit as of March 2012. I suspect 0C because the crazy fuel economy issues I've had, which I associate with the intercooler bypass function somehow (possibly improper installation) only seem to occur once ambient drops under 5C.
The latest version came out substantially later.

So far I've had no issues with mine since the kit was installed, 10* version.
It's been on there a couple months now- so far so good, but time will tell.
 

SkeeterMark

Veteran Member
Joined
Jan 8, 2013
Location
North Branch, MN
TDI
2013 Jetta TDI 6M
Okay, so this thread is 278 pages long, so I haven't combed through the whole thing to find the answer to this.

I just picked up a 2010 with 65k miles on it so this issue has my attention.

When does the icing actually occur? During operation or after?

I'm guessing it is a combination - the condensation builds up in the intercooler while driving and having super cold air super cool the intercooler. Then, when stopped, this condensation freezes up.

Fixes? Would blocking the intercooler when cold out stop the condensation, and allow the intercooler to stay warm enough to prevent moisture accumulation? It obviously wouldn't help much when parked, but if it prevented the moisture buildup in the first place it might solve/slow down the problem.
Actually, most commonly the ice forms while you're driving in below freezing temps. Then you park and it melts cuz you parked in a garage or the day warmed up. Now you have a slug of water ready to come through on your next start up.
 

PlaneCrazy

Top Post Dawg
Joined
Jan 3, 2000
Location
Province of Quebec, Canada
TDI
Gone...
This is an issue for ALL 2009-2014 with the CBEA or CJAA engine code. It is not a failure of a part, which "might" happen. It is a product of the original design (as present on all affected models) in combination with certain weather/temperature conditions. If your vehicle has not had the update, your car IS subject to intercooler icing and ingesting water.
I'm not sure I totally agree. Touch wood, but our 2013 Golf Wagon is driven in exactly the same conditions as our 2011 Golf hatch and has never had an issue. Same drivers, same weather. My wife does mostly local/rural driving and I do mostly highway, but we swap cars regularly.

Her 2013 has been through nearly two Quebec winters. It does NOT have the IC kit installed. It has never had as much as a hiccup, or if anything a hesitation so slight as to be barely noticeable.

On the other hand the 2011 has had multiple issues, even AFTER having the IC kit installed: multiple hard starts, and water accumulation in the intake even in the summer.

I know this is anecdotal but there has to be something different between the two cars. I suspect it might be something at the level of the EGR. If not the programming then something like a sticking valve, or variation in the valve QC (say variation the "stickiness" of a valve or soemthing).

The issue here is that VW just doesn't have a clue.
 

Jayg

Veteran Member
Joined
Oct 23, 2012
Location
Anchorage, AK
TDI
'12 Jetta 6MT-VW bought back as a lemon
^Yep. The level or timing of the EGR seems to be the culprit. Are there software tunes for the CR cars that modify the egr without removing the physical hardware?
 

cevans

TDIClub Enthusiast, TDI Parts Ninja Vendor , w/Bus
Joined
Sep 24, 2002
Location
Hingham, MA
TDI
2015 Beetle Conv. TDI 6-Speed & 2006 E320 CDI
The new engines are set up the same way as the passat. I believe that it is an air to water not an air to air system.
Correct, new engine has a water-to-air intercooler built into the cross-flow cylinder head.

Actually, most commonly the ice forms while you're driving in below freezing temps. Then you park and it melts cuz you parked in a garage or the day warmed up. Now you have a slug of water ready to come through on your next start up.
This seems to make sense to me. Any second opinions?
 

RES

Veteran Member
Joined
Sep 21, 1999
Location
TRUMBULL,CT. USA
TDI
2000 Jetta TDI, 1997 Passat (Totaled in Accident) 2010 Jetta Sportwagon TDI
I'm not sure I totally agree. Touch wood, but our 2013 Golf Wagon is driven in exactly the same conditions as our 2011 Golf hatch and has never had an issue. Same drivers, same weather. My wife does mostly local/rural driving and I do mostly highway, but we swap cars regularly.

Her 2013 has been through nearly two Quebec winters. It does NOT have the IC kit installed. It has never had as much as a hiccup, or if anything a hesitation so slight as to be barely noticeable.

On the other hand the 2011 has had multiple issues, even AFTER having the IC kit installed: multiple hard starts, and water accumulation in the intake even in the summer.

I know this is anecdotal but there has to be something different between the two cars. I suspect it might be something at the level of the EGR. If not the programming then something like a sticking valve, or variation in the valve QC (say variation the "stickiness" of a valve or soemthing).

The issue here is that VW just doesn't have a clue.
I think you may have something there with the EGR behavior. Soon after I had my icing start up problem, I threw a code relating to a sticking EGR valve. We cleaned the throttle valve and the EGR valve. Since then I have not had any icing problems. I am guessing that with these two valves functioning cleanly there may be less of a problem. But it is just a guess with no technical explanation. After 60,000 miles I am glad I cleaned those valves, they were quite dirty. It wasn't that big of a job.
 
Top