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How do you know when a probe is bad?

buzd504buzd504 Posts: 770
Doing a spatch chicken tonight.  Put my Maverick on it since I was doing other things.  The chicken (probe in the thigh) started cooking really fast - to 170 in about thirty minutes, starting from a relatively cool chicken.

Got out my thermapen, and sure enough, the thigh was reading about 140, and the breast about 90!! 

Is this a sign that my probes are bad?  I put the probe in the breast and it's already showing over 200.
NOLA

Comments

  • Mattman3969Mattman3969 Posts: 2,583
    You can check it in boiling water. Should read 212*. Try putting the thermopen right where the tip of your maverick probe is in the chicken. Your probe could be too deep or near a bone. I have also had bad temp measurements when the batteries are goin dead.

    -----------------------------------------


    Large BGE. Small BGE Henderson, Ky. Waitin to find a Sasquatch to Egg.
  • grege345grege345 Posts: 1,377
    That probe on the maverick is big. Maybe to big for chicken???
    -————————————————————————•———————————————•———————– Pennsylvania / poconos
  • buzd504buzd504 Posts: 770
    shouldn't be too big - I've used it before.

    It could definitely be the batteries.  This thing is WAY off.  Thanks.
    NOLA
  • DMWDMW Posts: 3,511
    +1 On checking the batteries. My pit temps were jumping all over and food temps were't jiving with Thermapen a couple cooks ago. Changed batteries and all got better. Also in cold temps batteries don't work as well.
  • ZmokinZmokin Posts: 356
    DMW said:
    +1 On checking the batteries. My pit temps were jumping all over and food temps were't jiving with Thermapen a couple cooks ago. Changed batteries and all got better. Also in cold temps batteries don't work as well.
    If your maverick sending unit is going to be out in the cold, I recommend forking out the big bucks and buying Lithium batteries.  Lithium's perform much better in cold than the standard alkaline.
    Large BGE in a Sole' Gourmet Table
    Using the Black Cast Iron grill, Plate Setter,
     and a BBQ Guru temp controller.

    Location: somewhere West of the Mason-Dixon Line
  • nolaeggheadnolaegghead Posts: 11,017
    You can check it in boiling water. Should read 212*. Try putting the thermopen right where the tip of your maverick probe is in the chicken. Your probe could be too deep or near a bone. I have also had bad temp measurements when the batteries are goin dead.
    This. 

    Moisture in the probe can cause it to go haywire.  Tip:  Dry the probe (whole thing) in the oven at 220 F.  Thermistor probes are more susceptible to this than thermocouples.  That is a thermistor.
    ______________________________________________
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    Large and Medium BGE, two turntables and a microphone, my friend.
    New Orleans, LA - we know how to eat 

  • Miked125Miked125 Posts: 184
    Agree with the boiling water. I have one probe that reads 100F when sitting but it reads 212 in boiling water. 
  • buzd504buzd504 Posts: 770
    Thanks for the tips, y'all.


    About the boiling water - what if it's off?  Is the probe bad then (assuming the batteries are good).  You can't calibrate a maverick, can you?
    NOLA
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