Thanks tdpower we will try this, did new gauge read below 200deg?

 

Mine went to the 6 o clock position with the probe disconnected. Autometer customer service said it should be 50-100 with it disconnected. Not positive if that is ambient or not. I would give them a call if you think you have a problem.

 

Its only cold until you start the engine, I don't think EGTs can be under 200* with the engine running.

 

My gauge is accurate to within 20* as compared to my laser temp finder, dont worry about it sitting at 200* not running. Mine has never given me a lick of trouble.

 

Stepper motor gauges do not reset to zero when turned off. They will reset when the key is turned back on, this is not something that is isolated to Autometer.

 

Your EV-2's will do the same damn thing... When you turn the key off the gauge will stop at the current reading.

Stepper motors, just the nature of the beast.

 

My son called yesterday (Monday) and said the gauge jumps to 200deg +- when you turn the key on BUT when you start the engine the gauge clicks and moves to zero then back to 200deg and then raises as temps increase and has not been reading 800+ like it was when first installed, Why it decided to start working is a mystery but all seems well....Thanks everyone...

 

I think you misread me. Of course, if the gauge is not powered, it is not reading anything. My point was a gauge reading 130-200 degrees higher than ambient with the key turned on but the motor not yet started does not seem right to me.

 

With the key off our gauge is reading 200deg, from what many others have said theirs never read below 200deg EVER I personally am with you and think it should be reading ambient temp +- a few deg until after the truck is started but it appears autometer pyro's read no less then 200d3eg ever!! I am not impressed and we no doubt will eventually change it out for one that does.. Thanks for your update/calcification cant hurt to call them and inquire I guess,,

 

I just went out and rechecked my pyrometer. When I looked at it with key off (after setting for about 4 hours ) the pyrometer reads 175 deg, when I srarted it it moved to 245 deg. in abour 10 to15 seconds. I got out and checked the exhaust temp. with a hand held temp gun it read 248 deg. It
never got above an idle. Why do you need it to show less than 200 deg when the exhaust gas temp will never be under 200 deg. Maybe they should have put a zeor in place of any readings below 200 deg. no gauge on the market will need to show anything under 200 deg. enough said

 

I think it would help the problem if they didn't put a zero on the gauge, bottom the range at 200. When your gauge doesn't read accurate at any given point it doesn't give you a warm fuzzy that its reading correct at any other point.

 

Enough said? That is a little dismissive...

A thermal couple should read the temperature. Sure it may not be dead on ***** accurate at either extreme end of the scale but to read 200 when the probe is room temp would cast a long shadow on the validity of any other reading. The 1960's model aircraft I fly has a turbine inlet temp gauge and it cruises at 932 degrees. Wanna guess what it reads when it is powered but before the motor is started? Ambient. If it read anything else, it would get fixed because it is broke. Our truck's gauges are not as critical as an airplane so if you choose the live with whatever your stuff is doing that is up to you. I was just stating what my trucks gauges we're doing.

 

The aircraft gauge cost more than a new truck, it should read to the thousand of a degree.