Autometer pyr will not zero &
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Freshman User
Joined: Apr 2010
Posts: 42
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From: NW Montana
Autometer pyr will not zero &
My son and I installed a 3 gauge pillar mount from autometer yesterday after installing the yards of wires and that LOVELY 1/8th plastic pressure tubing wrestling match, we turned the key and the pyro meter stayed at 200 after starting and running for awhile it did move upward but after a cool down or with the key off it will not drop below 200 and while running seems to be indicating 200deg to warm 800 vs 600 no load, gravel road drive, after sitting overnight (it was 32deg last night) its still reading 200deg seems like it is not self calibrating or is calibrated wrong from autometer? Any other ideas?? (YES we used separate clean to metal grounds)
Postmaster
Joined: Dec 2008
Posts: 3,340
Likes: 2
It's not uncommon to get a bad gauge. Mine was bad from autometer. I would call their customer service. They had me disconnect the leads to the probe at the gauge and turn the key on. Leave the + and ground hooked up. The gauge should read ambient temperature. Mine would stay at the 6 o clock position so they said the gauge was bad. They had me send it in and they replaced it.
Laughing Gas
Joined: Nov 2010
Posts: 915
Likes: 1
From: oriental NC.
very good but very few cust service issues with them the two times i needed them in 25 years of using there gauges in my shop they sent new ones quick no questions asked call your vendor. 
after rereading your post its working you just arnt seeing it hit 0 correct ? ill check mine but its like any gauge or scale you want it most percise near the normal range of whatever it is you are measuring .what line of gauges did you buy ?
after rereading your post its working you just arnt seeing it hit 0 correct ? ill check mine but its like any gauge or scale you want it most percise near the normal range of whatever it is you are measuring .what line of gauges did you buy ?
Last edited by 429 f-100; Mar 10, 2012 at 12:01 PM. Reason: re read daaaa
Senior User
Joined: Mar 2006
Posts: 487
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From: CT
My autometer pyro does the same thing, key off the gauge reads just above 100deg. Had autometer send me another and same thing, they told me that its fine and thats just the way it is. Long story short, i will never buy an autometer product again.
Postmaster
Joined: Dec 2010
Posts: 2,951
Likes: 4
From: Gary,Indiana
I have been using Autometer gauges for about 30 yrs and never an issue. And I have used them in boats, race cars, motorhomes and trucks. But it good to know if there is an issue they will make it right. 
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
My pyro gauge rests at whatever temp it read when the key was turned off. When cold, it reads near ambient with key on and rises after starting.
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Duct Tape Tech.
Joined: Jul 2009
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From: San Antonio Tx.
I have had autometer gauges for 2 years and mine will do the same, I called Autometer, and was told it is normal for the pyrometer to not go lower than 200* They said it would read correct at higher temps. They said you would never need to know the actual temp as long as it was at 200 or less. When I start the engine it will go up to 300 or so at idle. Others on this fourm have had the same thing and have had no problems.
Edit: this issue is only with the Pyrometer, all other gauges are fine.
Edit: this issue is only with the Pyrometer, all other gauges are fine.
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Hotshot
Joined: Jan 2008
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From: Rochdale MA
I have had autometer gauges for 2 years and mine will do the same, I called Autometer, and was told it is normal for the pyrometer to not go lower than 200* They said it would read correct at higher temps. They said you would never need to know the actual temp as long as it was at 200 or less. When I start the engine it will go up to 300 or so at idle. Others on this fourm have had the same thing issues and have had no problems.
Edit: this issue is only with the Pyrometer, all other gauges are fine.
Edit: this issue is only with the Pyrometer, all other gauges are fine.
Postmaster
Joined: Dec 2008
Posts: 3,340
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Mine does the same. The difference might be different models. I have the autometer phantom gauges.
Lead Driver
Joined: Jun 2003
Posts: 8,298
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From: Damon (South East Texas)
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
I went out and shot the uppipe (engine off/ sat overnight) where my pyro probe is mounted with my IR temp gun. The pyro gauge (key on) is reading within 20*(+/- 5) of the temp gun. That's close enough for me. 
I'll have to check it running later and make another comparison.
I'll have to check it running later and make another comparison.
Thread Starter
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Freshman User
Joined: Apr 2010
Posts: 42
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From: NW Montana
These are Autometer phantom gauges, when they arrived the pyro was reading 200deg we assumed it would "re-set" itself after instillation and power was added, no luck, I read it should read 100deg if you disconnect the leads at the gauge? It appears to be reading 200deg +- to hot at all readings, truck is mostly stock Diamond 4in straight pipe exhaust and cold air intake system gauge is responsive but should we actually ever hit 800deg truck unloaded highway speeds 40deg outside temps? We would be "ok"with the 200deg issue IF we knew the gauge was accurate the rest of the time, just stinks to try and buy American then have to settle..Thanks for the info guys...
Last edited by fromnwmt; Mar 11, 2012 at 11:07 AM. Reason: spelling