Fixed my pyrometer...I think

[Diesel JD]

Thanks, Travis, Dirtleg, all the rest of you guys that gave me advice on the pyro. My dad fixed it last night...and the crimp came loose yet again but I got it put back together. It now reads around 300-325 at idle, 350-550 driving around suburbia (45-50 mph, 0-2PSI boost) The only thing that has me concerned is the fact that it reads about 150-200 probably closer to a hair over 200 even with the truck off and cool. Does this mean I can't trust the gauge? Should it be recalibrated or replaced? If it is off is it likely to be too high or too low? Thanks,
JD

 

[SKimballC]

Your temps don't sound too far off from mine, though a tad higher, but if its showing a reading with your engine off it ain't right. Your gauge doesn't instill too much confidence if it isn't going to zero with the engine off.

As a reference point, my EGT's are around 250 at idle, 450 or so at 2-3 psi under acceleration, and on up to 1000 in the hills at an extended 5 psi on the interstate. All readings taken empty with what is probably slightly advanced timing and a turn or two too many on the fuel screw. My right foot NEVER touches the floor on the go pedal.

 

[Diesel JD]

Yeah I know it can't be quite right Shane, and maybe I should be saving up for a better pyro...in the meantime I am not living on the ragged edge by any means. Some more readings from today:
300-400 around town unless I'm climbing hills then its 500-550. On the interstate today I saw as high as 650 at 65-75mph and 2-3PSI boost. I have yet to see any boost #s higher than 3-4, then again I haven't had on a heavy load.