Won't rev past 1200 RPM after battery died.
+ Reply to Thread
Results 1 to 7 of 7
  1. #1
    Neutral
    Join Date
    Feb 2011
    Location
    Colorado
    Posts
    26

    Won't rev past 1200 RPM after battery died.

    1999 1.8T Passat Wagon

    I left my lights on yesterday and killed my battery. Unfortunately I ended up having to buy a new battery.
    Now, it seems to idle much lower than normal and when I went to just drive it around the parking lot it would only rev up to about 1200 RPM then it suddenly drops in RPM very quickly. After messing with it a little bit I am getting a check engine light but I need to get my code reader out of storage so I can retrieve the trouble code.
    It is just really odd because it was running great up until I killed the battery. I read another thread that the computer needs some time to "re-learn" but I am just not sure about this.

  2. Remove Advertisements
    VW Passat Forum
    Advertisements
     

  3. #2
    Moderate Moderator Steve in Chicago's Avatar
    Join Date
    Jul 2008
    Location
    Chicago
    Age
    51
    Posts
    15,048
    The throttle body and engine computer may have lost calibration with each other.

    Throttle Body Alignment (TBA) - Ross-Tech Wiki)

  4. #3
    2nd Gear
    Join Date
    May 2011
    Location
    Ardmore, PA
    Posts
    649
    Pretty sure your car went into limp mode. You probably shorted something out when jump starting it.

  5. #4
    4th Gear
    Join Date
    Apr 2007
    Location
    Greensboro, NC
    Posts
    3,158
    Quote Originally Posted by Steve in Chicago View Post
    The throttle body and engine computer may have lost calibration with each other.

    Throttle Body Alignment (TBA) - Ross-Tech Wiki)

    x2, ^this^ Find someone with a VAGCOM and it will take less than 5 minutes to fix.

  6. #5
    2nd Gear
    Join Date
    Dec 2004
    Location
    Gateshead, UK
    Age
    42
    Posts
    910
    ....see if the bonnet up, door open, key turned for 5 mins trick works as well?

  7. #6
    PZ
    PZ is offline
    Redline
    Join Date
    May 2002
    Location
    Grapevine TX. 01 4M
    Age
    51
    Posts
    22,063
    Not very well on the 98-99 DBC engines.

  8. #7
    Neutral
    Join Date
    Feb 2011
    Location
    Colorado
    Posts
    26
    Ended up having to take it to the mechanic to have them adjust the Throttle Body. They ended up cleaning it and reprogramming it and that ended up fixing it.
    "Door Open, Hood Up, Key" trick didn't work at all.

  9. Remove Advertisements
    VW Passat Forum
    Advertisements
     

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Powered by vBadvanced CMPS v4.1.2