My Audi starts , idles & can not rev or accelerate more than 1200RPM it dies. Put on an Electronic diag tool, it says Faulty Throttle unit? can someone assist?

Asked by Mar 14, 2015 at 07:30 AM about the 1999 Audi A4 1.8T Quattro

Question type: Maintenance & Repair

4 Answers

first of all you should have got your answer from the person who did the diagnostic, however you dont give full detail about your car. e.g year model and millage. its important to check it from that point too. but it seem to me the body Throttle is a problem. and i m thinking it could be a dirty Throttle if thats the case, it must be cleaned by a qualifies Auto electrician. or the Body Throttle will need to be replaced. one must remember the body Throttle serve the same function of the old Carberator, if you know the function of that, the your question is answered. Good luck

40,555

Hard to tell by your description. Did they say bad Throttle Position Sensor or replace your entire Throttle Body? Ebay has several for sale right now. From $35-$150. I think the TPS will be attached to the new throttle body when you buy it.

10

I have a Audi A4 1.8 non turbo with same problem, I replaced throtle body and TPS, Cam sensor, Heat switch with no luck, it starts idles but as soon as you toch the acc pedal it dies. Have any one got the sulution?

1 of 1 people found this helpful.
40,555

Arrie, checked out some Youtube videos. A guy was having the same issue as you. This is the answer someone gave him: The symptoms are consistent with bad 02 sensors, and the low boost is limp mode due to the check engine light. If your gas mileage is horrible, the car smells like un-burned fuel it's most certainly 02 sensors as the limp mode is throwing it into full rich. You will need to get it scanned to read the codes to see if its 02 sensors. Other thought would be the MAF sensor is bad, but once again you need to scan the car in order to determine the codes. The MAF issues tend to have the car struggle as you throttle up, then it will rev high as it can't read air flow. 02 and MAF are easy to replace but they are expensive electronic parts. You can find them much cheaper online. The video poster replied back and stated that the issue was in fact bad 02 sensors. The video poster had a turbo but that shouldn't make a difference. Hope this helps!

1 of 1 people found this helpful.

Your Answer

A4

Looking for a Used A4 in your area?

CarGurus has 10,720 nationwide A4 listings starting at $1,500.

ZIP:

Audi A4 Experts

  • #1
    Deathjam4
    Reputation
    3,570
  • #2
    lukeyramone
    Reputation
    540
  • #3
    Tom Demyan
    Reputation
    470
View All

Related Models For Sale

Used BMW 3 Series
1,020 Great Deals out of 31,324 listings starting at $1,000
Used Audi A6
140 Great Deals out of 6,499 listings starting at $1,700
Used Audi A3
70 Great Deals out of 4,778 listings starting at $4,100
Used Audi S4
55 Great Deals out of 1,746 listings starting at $3,750
Used Mercedes-Benz C-Class
585 Great Deals out of 23,269 listings starting at $1,995
Used BMW 5 Series
441 Great Deals out of 16,444 listings starting at $2,000
Used Honda Accord
1,046 Great Deals out of 62,123 listings starting at $999
Used Ford Mustang
751 Great Deals out of 42,448 listings starting at $1,300
Used Audi A8
50 Great Deals out of 2,021 listings starting at $2,750
Used Chevrolet Camaro
413 Great Deals out of 31,803 listings starting at $2,395
Used Mercedes-Benz E-Class
447 Great Deals out of 19,599 listings starting at $1,500
Used Honda Civic
814 Great Deals out of 77,568 listings starting at $888

Used Cars For Sale

2018 Audi A4 For Sale
1,843 listings starting at $38,955
2017 Audi A4 For Sale
42 Great Deals out of 2,812 listings starting at $26,750
2016 Audi A4 For Sale
15 Great Deals out of 220 listings starting at $22,500
2015 Audi A4 For Sale
15 Great Deals out of 478 listings starting at $16,400
2014 Audi A4 For Sale
58 Great Deals out of 1,281 listings starting at $12,995

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.