348 - 348ts Battery warning on after service | FerrariChat
Buy

348 348ts Battery warning on after service

Discussion in '348/355' started by rob58, Oct 27, 2024.

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

  1. rob58

    rob58 Karting

    May 30, 2020
    122
    CT.
    Full Name:
    Robert Orris
    #1 rob58, Oct 27, 2024
    Greetings All, after some maintenance on my 1990 348ts I experienced the following: The shop- (Replace Alternator Lower Support Bracket - Includes Bearing, Hub and Adjustment Screw) Remove & Replace Crank Shaft Sensors) Then the following occurred before I picked up the car: Warning lights came on. The shop-

    (Perform Blink Code Retrieval for cylinders 1-4. Code 1114 for oxygen sensor. Inspect and test Ignition system for spark, injector operation, and fuel delivery. Found relay for RH fuel pump INOP. Clean with contact electrical cleaner and swap with rear defrost relay. Clear code from RH Motronic and road test. Engine is currently performing correctly) Ok I then picked up the car.

    During the ride home the following occurred: The red Battery warning light came on. I noticed that it would go off on deceleration and reappear on acceleration. This occurred all the way home. (25 miles or so) As I entered my driveway both the yellow Cylinders 1-4, and Cylinders 5-8 warning lights came on. The car shuddered and stalled out!

    I tried to restart, and it gave the dead battery rapped click-click-click. I checked the battery and found it to be low. After a recharge it started right up. However, the red battery light is still on. Given the above what do you think are the issue (s)? Should I replace, and clean all the relays? Alternator issues? Wouldn’t an alternator warning light have came on?

    Please help!
     
  2. steved033

    steved033 F1 Veteran
    Owner Silver Subscribed

    Apr 12, 2017
    9,554
    Atlanta, GA
    Full Name:
    Steve D.
    #2 steved033, Oct 27, 2024
    missed a ground...
    didn't tighten the + cable on the alternator....
     
  3. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    13,881
    Sydney
    Full Name:
    Ian Riddell
    #3 Qavion, Oct 27, 2024
    The alternator warning light is the battery light. Sounds like they messed up the alternator re-installation.
     
  4. rob58

    rob58 Karting

    May 30, 2020
    122
    CT.
    Full Name:
    Robert Orris
    #4 rob58, Oct 28, 2024
    Thank you for your observations. I will start with that then. So, the car is running off the battery? The alternator is not properly charging?
     
  5. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    13,881
    Sydney
    Full Name:
    Ian Riddell
    #5 Qavion, Oct 28, 2024
    I would invest in a cigarette lighter voltmeter. It should tell you if your alternator is putting out > 14volts.

    There are so many things that can go wrong with the charging system. I suppose there could be something mechanically wrong with the connections if it comes on with acceleration (as mentioned, loose cables, belts, etc). Just look around your alternator for something obvious. Was the battery disconnected during maintenance?

    I assume they mean the Check Engine light/s?
     
  6. rob58

    rob58 Karting

    May 30, 2020
    122
    CT.
    Full Name:
    Robert Orris
    #6 rob58, Oct 29, 2024
    Yes, check engine light. The red Battery light on the dash warning light cluster. Yes, I assume the battery was disconnected during maintenance. I have a disconnect key. I have a trickle charge on it now. It reads fully charged!
     
  7. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    13,881
    Sydney
    Full Name:
    Ian Riddell
    #7 Qavion, Oct 29, 2024
    Start car and with a voltmeter, read the voltage on, say, battery bus terminals in the engine bay (to ground)

    Image Unavailable, Please Login

    See if anything changes if you rev your engine. I don't know if actual acceleration is causing your issue, or just engine rpms.

    Check tightness of those terminals (with cutout switch in cutout).
     
  8. rob58

    rob58 Karting

    May 30, 2020
    122
    CT.
    Full Name:
    Robert Orris
    #8 rob58, Oct 30, 2024
    Wow! Thank you for the diagram / photo this is very helpful! I will do this over the weekend as I am traveling. I'll report back as to my findings.

    Again, thank you for your help.

    Sincerely
     
    Qavion likes this.

Share This Page