help with first arduino program

ok ive been writing code arduino reads 91 civics ecu via serial, converterts numbers values, , displays em on 20x4 rgb lcd. current problems ive been having
1 temp calcaulation reads zero
2 rtd code outputs zero
also didnt not write of main code "void dash()" got guy on d-series.org , ive been adding things menus , more features. apperciate tips on hope lower memory requirement adding datalogging sd card , i2c i/o expander.
link code on google docs https://docs.google.com/open?id=0b3okxphybry9c1qtzwh0ovl2qta

1) before posting, try pass of auto format tool on code in ide.
    press ctrl-t, , code transformed, consistent indentation.

2) anywhere have literal, unchanging string,

code: [select]

lcd.print("ecu mil codes");
    can save precious ram putting string in progmem.
    using 1.0, simple

code: [select]

lcd.print(f("ecu mil codes"));, otherwise bit more legwork you.

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