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Thread: 1992 4.9 injector replacement

  1. #1
    Join Date
    Aug 2005

    1992 4.9 injector replacement

    Ok folks I changed my injectors from MULTEC to 5.0 mustang injectors BOSCH and my rough idle is gone,no more hesitation on acceleration (bog)I tested all injectors with an ohm meter and they all checked out OK at 16-17 ohms except for one which was 7.8ohms.(this injector was causing all the symptoms)I just wanted to say thanks to all who posted about this problem and how to fix ROCK'S.

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  3. #2
    4.9fiero is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Jul 2007

    Re: 1992 4.9 injector replacement

    Besides being unreliable, the stock injectors plug much more easilly. I got Accel (Bosch) at Jegs for a 5 ltr (305) chevy, same as 5.0 Ford. Cheaper than the factory replacements and better all around. Actually easier to change on the 4.9 than the 2.8 that came in the Fiero.


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