Engine races when slowing down

Asked by Jul 02, 2016 at 07:33 PM about the 2012 Volkswagen Jetta TDI w/ Premium and Nav

Question type: Maintenance & Repair

I have a 2012 Jetta TDI which I purchased from new. I know her well and how
she drives. I have 92,000 miles on her and maintain her only at the VW
dealership. Over the last say...8 months, my engine races when I slow down. I
swear it's like someone is holding their foot on the gas and the engine just
races while I bring my Jetta to a slow stop. I have repeatedly taken my car to
the dealership to find out why she is doing this only to be told, nothing is
wrong with her (no codes and the like). My 100,000 mile warranty runs out
soon and I am afraid of not addressing something that could potentially cost
me some big bucks if not addressed. I would really appreciate any input on my
situation.

5 Answers

10,445

can you provide a bit more info about the car? such as enigne size is it a turbo and such. also when was the last time the glow plugs were done? try getting your car to repeat this problem and record it on your phone or a camcorder. this could be caused from excessive carbon build up in the engine. have the throtle body checked for signs of damage as well. are there any out of the normal sounds during regular operation? such as rattling ticking and the like?

She is a 2.0 L 4-cylinder turbo diesel. The glow plugs were replaced last year. There are no abnormal sounds at all when driving. If I am driving for example 55 mph and I go to slow down...the engine starts to rev like it's racing. I have tried to tell the dealership that this is not something that I have ever experienced since I purchased her however, they tell me everything checks out. I will take her in this week or next if I can and ask them to check the throttle body. If there is excessive carbon build up in the engine, is there something I can do to address it or is that something only the shop can take care of?

10,445

Normally if its left to long its something only a shop can handle as after a certain amount of time it gets so bad that only a chiseled can get it off. This is a automatic right ? there is a possibility the trany fluid is low or there might be a trany issue. its entirely possible the transmission is disengaging or lowering gear when it shouldn't be often cause by low fluid levels. so have them check the fluids while your in. And just so you know vw does and can decarbon the engine but it is costly since they have to tear down the engine to do it. in most cases tho it is good to be done. the 2L shouldnt have a turbo so that wouldnt be the issue which is what i thought might cause the issue. The only other thing i can think of is maybe reseting hte computers for the trany and main ecu. it might correct the issue if its jsut a bug in the system.

Best Answer Mark helpful

Thank you for taking the time to respond to my query. You definitely have given me some things to think about and questions to ask the dealership. I've read some really bad reviews on the VW Jetta's however from my own personal experience, it is one of the best vehicles I have ever owned.

10,445

yea i owned a 98 audi for 7 years before i bought my jetta but i rushed into a car that was subpar at best the dealership already sunk 10k into my car in the last year that i have owned it on warranty repairs. i got a simalur one to you jsut with the gas 2.5L engine. Overall i think its a good car but i just bought a lemon and they refused to take it back and short sticked me with it so i been making them pay for it they already lost what i payed for it so i think i came out ahead :P any wyas keep me posted

1 of 1 people found this helpful.

Your Answer

Jetta

Looking for a Used Jetta in your area?

CarGurus has 36,424 nationwide Jetta listings starting at $1,100.

ZIP:

Volkswagen Jetta Experts

  • #1
    Goodwrench707
    Reputation
    2,430
  • #2
    Deathjam4
    Reputation
    1,930
  • #3
    Scott Sr.
    Reputation
    1,470
View All

Related Models For Sale

Used Volkswagen Passat
414 Great Deals out of 20,714 listings starting at $1,900
Used Honda Civic
815 Great Deals out of 73,912 listings starting at $1,400
Used Volkswagen GTI
136 Great Deals out of 8,690 listings starting at $2,400
Used Honda Accord
1,134 Great Deals out of 62,429 listings starting at $1,199
Used Volkswagen Golf
111 Great Deals out of 5,164 listings starting at $1,495
Used BMW 3 Series
1,174 Great Deals out of 33,353 listings starting at $1,000
Used Toyota Corolla
910 Great Deals out of 57,793 listings starting at $1,488
Used Audi A4
277 Great Deals out of 11,376 listings starting at $1,999
Used Toyota Camry
1,078 Great Deals out of 73,747 listings starting at $295
Used Nissan Altima
1,014 Great Deals out of 75,761 listings starting at $1,627
Used Volkswagen CC
70 Great Deals out of 2,886 listings starting at $4,300
Used Mazda MAZDA3
337 Great Deals out of 26,935 listings starting at $950
Used Chevrolet Cruze
957 Great Deals out of 59,593 listings starting at $3,490
Used Ford Focus
750 Great Deals out of 53,164 listings starting at $999
Used Volkswagen Beetle
234 Great Deals out of 7,600 listings starting at $1,000

Used Cars For Sale

2017 Volkswagen Jetta For Sale
11 Great Deals out of 20,262 listings starting at $9,877
2016 Volkswagen Jetta For Sale
70 Great Deals out of 1,796 listings starting at $8,600
2015 Volkswagen Jetta For Sale
138 Great Deals out of 3,147 listings starting at $6,490
2014 Volkswagen Jetta For Sale
180 Great Deals out of 4,499 listings starting at $4,999
2013 Volkswagen Jetta For Sale
54 Great Deals out of 1,439 listings starting at $4,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.