TriniTuner.com  |  Latest Event:  

Forums

Pros and Cons of new 1.4 tsi Jetta

BMW, Mercedes, Mini, Audi, Peugeot, Renault, VW, Rover, Volvo, Porsche, Jaguar etc.

Moderator: 3ne2nr Mods

User avatar
Allergic2BunnyEars
TriniTuner 24-7
Posts: 7746
Joined: September 15th, 2011, 12:32 am

Re: Pros and Cons of new 1.4 tsi Jetta

Postby Allergic2BunnyEars » October 14th, 2020, 7:34 am

jrpug407 wrote:Hi Guys it's be awhile the misfires in my Jetta seems to persist, long story short decided to take it to a different garage and have it inspected. These pictures attached are what I just received from the mechanic, appreciate your thoughts.

Wondering too if I had already done a decarbonizing procedure (walnut blasting) should there still be this much carbon? ImageImageImageImageImage

That’s carbon build up on intake valves? What’s your mileage?

Advertisement
jrpug407
Riding on 13's
Posts: 13
Joined: March 31st, 2020, 2:28 am

Re: Pros and Cons of new 1.4 tsi Jetta

Postby jrpug407 » October 14th, 2020, 7:38 am

aaron17 wrote:
jrpug407 wrote:
aaron17 wrote:These days on cold start in the morning sometimes maybe when I don't use the car a day after....i does experience rough idle..
when i put it in drive or reverse , it goes away....
I carried it to the mechanic and it didnt throw any faults. But I will still monitor it. Any suggestions on this?
sounds like similar issues I had experienced early this year, do you have a OBD II scan tool it could be useful to pick up things like misfires etc. If your using Torque Pro there a function called live data or something click on that it will scan the car.


I don't have one..
I suggest getting a hold of one, it's pretty useful the info from this diagnosis tool will help narrow the cause. It will certainly give some peace of mind knowing what are the issues with the car.

jrpug407
Riding on 13's
Posts: 13
Joined: March 31st, 2020, 2:28 am

Re: Pros and Cons of new 1.4 tsi Jetta

Postby jrpug407 » October 14th, 2020, 7:42 am

Allergic2BunnyEars wrote:
jrpug407 wrote:Hi Guys it's be awhile the misfires in my Jetta seems to persist, long story short decided to take it to a different garage and have it inspected. These pictures attached are what I just received from the mechanic, appreciate your thoughts.

Wondering too if I had already done a decarbonizing procedure (walnut blasting) should there still be this much carbon? ImageImageImageImageImage

That’s carbon build up on intake valves? What’s your mileage?
It's at 118k miles, damn could I have been flimflammed by the previous garage, I had done at least 2 decarbonizing procedure with them..... sigh

User avatar
Allergic2BunnyEars
TriniTuner 24-7
Posts: 7746
Joined: September 15th, 2011, 12:32 am

Re: Pros and Cons of new 1.4 tsi Jetta

Postby Allergic2BunnyEars » October 14th, 2020, 7:44 am

jrpug407 wrote:
Allergic2BunnyEars wrote:
jrpug407 wrote:Hi Guys it's be awhile the misfires in my Jetta seems to persist, long story short decided to take it to a different garage and have it inspected. These pictures attached are what I just received from the mechanic, appreciate your thoughts.

Wondering too if I had already done a decarbonizing procedure (walnut blasting) should there still be this much carbon? ImageImageImageImageImage

That’s carbon build up on intake valves? What’s your mileage?
It's at 118k miles, damn could I have been flimflammed by the previous garage, I had done at least 2 decarbonizing procedure with them..... sigh

Not sure if walnut blasting works. Some take off manifold and get a brush directly to the intake valves for carbon removal on direct injection engines.

Side question: You ever had to change your mechatronic unit?

jrpug407
Riding on 13's
Posts: 13
Joined: March 31st, 2020, 2:28 am

Re: Pros and Cons of new 1.4 tsi Jetta

Postby jrpug407 » October 14th, 2020, 7:48 am

Allergic2BunnyEars wrote:
jrpug407 wrote:
Allergic2BunnyEars wrote:
jrpug407 wrote:Hi Guys it's be awhile the misfires in my Jetta seems to persist, long story short decided to take it to a different garage and have it inspected. These pictures attached are what I just received from the mechanic, appreciate your thoughts.

Wondering too if I had already done a decarbonizing procedure (walnut blasting) should there still be this much carbon? ImageImageImageImageImage

That’s carbon build up on intake valves? What’s your mileage?
It's at 118k miles, damn could I have been flimflammed by the previous garage, I had done at least 2 decarbonizing procedure with them..... sigh

Not sure if walnut blasting works. Some take off manifold and get a brush directly to the intake valves for carbon removal on direct injection engines.

Side question: You ever had to change your mechatronic unit?
Yes I had it replaced at 48000 miles on my final year of the warranty back in 2015

User avatar
Dave
3NE 2NR Moderator
Posts: 15612
Joined: April 22nd, 2003, 8:07 am
Location: playing with above and below
Contact:

Re: Pros and Cons of new 1.4 tsi Jetta

Postby Dave » October 14th, 2020, 7:53 am

Carbon build up is exacerbated by thinner oils required in newer cars and less use of good gas treatments.
Traffic also adds to this condition.

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 14th, 2020, 8:21 am

Update.....same ole front wheel speed sensor need replacing from the diagnosis. He told me vw always give trouble with them speed sensors. I asked him if cleaning would help. He said no. So them wheel sensors always be poppin...lol
Steups..

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 14th, 2020, 8:41 am

You all ever get trouble with those wheel sensors like me?

jrpug407
Riding on 13's
Posts: 13
Joined: March 31st, 2020, 2:28 am

Re: Pros and Cons of new 1.4 tsi Jetta

Postby jrpug407 » October 14th, 2020, 8:58 am

aaron17 wrote:You all ever get trouble with those wheel sensors like me?
they do pop up once awhile but not as often as you had described, by the way with regards to the sensor problem have had a 2nd opinion?

I had always sent my cat to one garage after the warranty was over. I decided to try another after they failed to address the issues of the ever mistifying misfires my car had been experiencing the last thing they recommended was an engine change (6k) at that point I knew I had to obtain a second opinion.

The car is in the garage and I'm really hoping a thorough clean up of all carbon would finally resolve the issue.

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 14th, 2020, 9:15 am

What I read on google was is either they failing as a defect...they not designed properly or they need cleaning. Strange enough, I was in some heavy white rain the day before. Would that cause something? Them thing jus pricey to change and the car does act up if I don't. I read up a forums and this does cause the same problems that I have and they just have to change the wheel sensors to sort out the erratic behaviour. A japanese vehicle next time yes...like the yaris cross..vezel (no dct) ...
Toyota ...honda or mazda....

User avatar
Kinday
12 pounds of Boost
Posts: 2241
Joined: May 19th, 2003, 10:47 pm
Location: Living in the Sunshine
Contact:

Re: Pros and Cons of new 1.4 tsi Jetta

Postby Kinday » October 14th, 2020, 8:59 pm

I changed the rear left wheel sensor a couple years ago. Now I'm getting the christmas tree lights on dash cluster, upon checking it's the same rear wheel sensor again. I realized that VW changed the part number though so I'll try the new revision. Eagerness cost me the last time around because out of frustration I bought two sensors but they were for the older model.

What I find strange though is that the lights themselves come on and off on their own. They might come on while on the highway and come off before I get to my destination. Some days they're on for a full day then off for two days. So weird and frustrating at the same time. The mechanic confirmed that its the sensor and no its not lose nor can't be cleaned. Regarding the erratic behaviour, I must agree. When the light comes on the car act like there are other issues involved...When there's no dash lights = no problems.

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 15th, 2020, 7:35 am

"When the light comes on the car act like there are other issues involved...When there's no dash lights = no problems"

This^^ self.
Only way for me so far is to shut down and restart car to clear the lights...may not be full proof but it avoids the car bucking and erratic behaviour.

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 16th, 2020, 10:22 am

I guess potholes and bad roads would make this fail more often.

jrpug407
Riding on 13's
Posts: 13
Joined: March 31st, 2020, 2:28 am

Re: Pros and Cons of new 1.4 tsi Jetta

Postby jrpug407 » October 16th, 2020, 12:39 pm

aaron17 wrote:I guess potholes and bad roads would make this fail more often.
Is yours a Jetta 1.4tsi ?

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 16th, 2020, 4:55 pm

jrpug407 wrote:
aaron17 wrote:I guess potholes and bad roads would make this fail more often.
Is yours a Jetta 1.4tsi ?
Yea

valentino 46
Riding on 13's
Posts: 7
Joined: November 30th, 2006, 12:06 am

Re: Pros and Cons of new 1.4 tsi Jetta

Postby valentino 46 » October 18th, 2020, 11:22 am

I had the same issue with wheel speed sensors with an a3 . When they bad they can misreport the speed of the vehicle erratically so gears would change erratically . When it gets really bad the car will disable electric steering (since this is speed sensitive and relies on data from sensors , abs, and tyre pressure mgmt - all dependent on speed sensor data ) I have vcds diagnostic so I knew which one was bad and changed it .I can actually drive the car with laptop on and log the data then look at all 4 sensor data on a chart and you will see how the bad ones makes the graph spike . I eventually had to change all . Bought them on eBay (original part from a German seller ) and well easy to install. No problems since.
Prob even same vw part number as a3

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 19th, 2020, 7:12 am

What is the part number? Lights came up today....this morning it geared from d6 to d7 with a high rpm . Then I stopped on the shoulder and it geared down but the last gear it geared down to was d7..with a shudder... wth.

jrpug407
Riding on 13's
Posts: 13
Joined: March 31st, 2020, 2:28 am

Re: Pros and Cons of new 1.4 tsi Jetta

Postby jrpug407 » October 19th, 2020, 7:22 am

aaron17 wrote:What is the part number? Lights came up today....this morning it geared from d6 to d7 with a high rpm . Then I stopped on the shoulder and it geared down but the last gear it geared down to was d7..with a shudder... wth.
I've got a feeling the issue lies with the transmission speed sensor and wheel speed sensor, car shuddering while changing gears could be a mechatronic problem but since your wheel sensor seems to be an on going issue then it's could be also affecting the transmission speed sensor. Just my 2 cents

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 19th, 2020, 8:02 am

Hmmm

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 19th, 2020, 8:56 am

From 2016 to now...10 speed sensors were changed so far.
A total of $7,844.96 or more were spent :/

I eh changed this one yet ...

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 19th, 2020, 2:10 pm

What is advisable on how to drive by the mean time?

User avatar
Pointman-IA
Shifting into 6th
Posts: 2035
Joined: April 3rd, 2005, 11:34 pm
Location: South West Trinidad
Contact:

Re: Pros and Cons of new 1.4 tsi Jetta

Postby Pointman-IA » October 19th, 2020, 2:25 pm

Drive into a reputable garage and do a complete diagnostics.
Regardless of manufacturer, you should not be changing sensors like that.

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 19th, 2020, 2:30 pm

I assume not massy right?

valentino 46
Riding on 13's
Posts: 7
Joined: November 30th, 2006, 12:06 am

Re: Pros and Cons of new 1.4 tsi Jetta

Postby valentino 46 » October 19th, 2020, 9:53 pm

aaron17 wrote:What is the part number? Lights came up today....this morning it geared from d6 to d7 with a high rpm . Then I stopped on the shoulder and it geared down but the last gear it geared down to was d7..with a shudder... wth.


This is for left side front I think
WHT 003 861

Remember it’s left/right, front / rear specific

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 20th, 2020, 8:10 am

valentino 46 wrote:
aaron17 wrote:What is the part number? Lights came up today....this morning it geared from d6 to d7 with a high rpm . Then I stopped on the shoulder and it geared down but the last gear it geared down to was d7..with a shudder... wth.


This is for left side front I think
WHT 003 861

Remember it’s left/right, front / rear specific


thx

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » October 22nd, 2020, 7:40 am

Mechanic says I still can drive it.but when i drive it on the highway at 80 constant..it does act up and i does lose power when it slip and rev over 3000rpm. So i have to pull on the shoulder and restart car. Mind u it only happens when abs and traction lights on.

User avatar
aaron17
Shifting into 6th
Posts: 2170
Joined: June 13th, 2006, 7:54 pm

Re: Pros and Cons of new 1.4 tsi Jetta

Postby aaron17 » Today, 3:23 am

Got it replaced...runs like new again..until it fails again ...steups

Advertisement

Return to “EURO”

Who is online

Users browsing this forum: No registered users and 4 guests