left side window lost power | FerrariChat

left side window lost power

Discussion in 'Technical Q&A' started by Dr.T348, Aug 21, 2007.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Dr.T348

    Dr.T348 Formula 3

    Jan 8, 2004
    1,599
    Chicago NW Burbs
    Full Name:
    Richard T.
    I have a '94 348 tb. Last week the left side window lost power. Thankfully in the up position.

    It's not the fuse or the switch. I have check those. Any ideas why the motor would lose power? Anyway to check without taking the door apart?

    Thanks.
     
  2. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
    Full Name:
    Mr. Sideways
    It's usually in the circular door jamb electrical connector (black plastic). Unscrew it by hand and take a peek.
     
  3. Dr.T348

    Dr.T348 Formula 3

    Jan 8, 2004
    1,599
    Chicago NW Burbs
    Full Name:
    Richard T.
    Looks ok. It disconects the power to both window switches. What should I look for? Only the drivers' side is without power.
     
  4. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
    Full Name:
    Mr. Sideways
    With it disconnected you should be able to unscrew the forward most connector in order to examine the actual wiring coming in to it.

    Likewise, you should be able to peel back the insulator to look at the door wiring where it connects to its black connector there.
     
  5. Miltonian

    Miltonian F1 Veteran

    Dec 11, 2002
    5,966
    Milton, Wash.
    Full Name:
    Jeff B.
    #5 Miltonian, Aug 21, 2007
    Last edited by a moderator: Sep 7, 2017
    Turn the key on, open the drivers door, hold the power window switch in the "down" position, grab the harness in the driver's door jamb, and wiggle it around. Chances are that the window will suddenly start moving when you make contact. Those silly pins can get loose, they can fry, or they can actually break in half. Here's a picture of what I found under the boot in my 348. I've seen much worse.
    Image Unavailable, Please Login
     
  6. Darolls

    Darolls F1 Veteran
    BANNED

    Jul 2, 2003
    7,782
    Full Name:
    Sparky
    Or, it's time to take it to Ed.

    Tony Tag's car just left so there's room!

    Oh, and Andreas doesn't have anything residing there at the moment either; just John K's Lotus Esprit.

    In a few weeks, some of my cars will be there for maintenance and hibernation.
     
  7. Darolls

    Darolls F1 Veteran
    BANNED

    Jul 2, 2003
    7,782
    Full Name:
    Sparky
    And wires tend to break, after constant flexing from opening and closing the door.
     
  8. Dr.T348

    Dr.T348 Formula 3

    Jan 8, 2004
    1,599
    Chicago NW Burbs
    Full Name:
    Richard T.
    Absolutely right. The wire had come unplugged. The connector seems loose. Is there a way to tighten it up?
     
  9. Ricambi America

    Ricambi America F1 World Champ
    Sponsor Owner

    Tear the old POS connectors out and hardwire it. It's a big pain-in-the-butt project because the fender liner needs to be removed too, but it's worth it.
     

Share This Page