annoying rattle

Discussion in 'Technical' started by hennon05, May 11, 2009.

  1. hennon05

    hennon05 Member

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    Anyone have any ideas, I have an annoying rattle when accelerating, from about 20mph to 30mph. I thought it was the heat shield around the converter, sounds to me like its in that area but i can't find it. HELP, thanks.
     
    hennon05, May 11, 2009
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  2. rayzorsharp

    rayzorsharp I "AM" a Maverick!

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    Good possibility it is the converter itself. Make sure it's cooled off and hit the bottom of the converter with your fist a few times. If the honeycomb stuff is broken up inside the converter it will make a helluva rattle. You can clean the broken stuff out or replace the entire converter.
     
    rayzorsharp, May 11, 2009
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  3. PaulS

    PaulS Member extrordiare

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    Sounds to me like it may be spark knock. Try retarding your timing to find out if it goes away. If it does you can have the distributor recurved so you can have more advance at idle and then a bit less coming on as the revs increase.
     
    PaulS, May 11, 2009
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  4. rayzorsharp

    rayzorsharp I "AM" a Maverick!

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    After re-reading the post I believe Paul is probably right. (y)
     
    rayzorsharp, May 11, 2009
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  5. WA8DDN

    WA8DDN Member

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    I had a noise that appeared under acceleration once and it was the flex plate slightly hitting the starter gear. I got a spacer to move the starter back and no more noise.
     
    WA8DDN, May 11, 2009
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  6. 71gold

    71gold Frank Cooper Supporting Member

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    :hmmm:...this was on a CHEBY...right?

    ...:bouncy:...
     
    71gold, May 11, 2009
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  7. WA8DDN

    WA8DDN Member

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    351 Windsor in a 1981 Mustang.
     
    WA8DDN, May 11, 2009
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  8. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    I'm with Paul...spark knock.you could try a higher octane fuel too(but thats just a crutch)
     
    Mavman72, May 11, 2009
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