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Discussion Starter · #1 ·
So I finally got my gauges installed this weekend. Thanks to a buddy of mine for helping me out. Anyway, my pyro gauge doesn't go under 200* when the truck is cold or when I shut the truck off. Also when I turn my lights on, the pyro jumps 20* hotter . Anyone know what goings on? Thanks Dustin
 

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You will rarely see under 200*. When you turn on the lights, you are creating electrical draw...require the alternator to kick in. That or your probe wires are getting interference from the headlight wires...who knows. 20* is more than negligible....
 

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Discussion Starter · #4 ·
Yeah 20* is nothing. Just wonder why when I shut the truck off the EGT gauge won't go under 200*. Hope theres nothing wrong with the gauge. :thud:
 

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I have Isspro's and the pyro gauge drops to 0* when I turn the key off.
 

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20 degrees flat is nothing, but 20 degrees is 10% of 200 degrees... It's not so good to be 10% off... I'd think interference in the headlight wires, didn't know you could interfere with thermocouple signals like that though...
 

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I'd think interference in the headlight wires, didn't know you could interfere with thermocouple signals like that though...
It doesn't make a whole lot of sense, though. The headlight wires shouldn't be near the pyro wires (unless it was wired retardedly)...I don't really see how they would interfere...:confused:
 

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the first thing that I thought of would have been the graound but you say that u made sure that it is grounded properly so that says to me it could be a faulty guage. Mine drops to 0* when i turn the key off. You say that you tapped into the illumination wire meaning parking lights
 

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They weren't wired "retardedly". The only wire spliced into the headlight wire is the illumination wire. All the other wires are connected to the main harness under the dash. Not my first install. I do know what I'm doing.
Whoa whoa whoa whoa whoa whoa..whoa...whoa. Hold on a second! I didn't say you did. For the interference, you would have to have the pyro leads NEAR the actual wiring or wiring harness...and with the way that harness is run, you shouldn't be anywhere near it...
 

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Mine will drop to about 50*F as the lowest temp cold in the morning... My Pyro gauge has no power connections just the pyro probe and lighting...

DiPricol gauge...
 

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Discussion Starter · #12 ·
When I let the truck sit all night, get in the next morning, turn the key forward, the pyro does go below 200* but only like 80*-90*. So who knows whats going on. Might give Autometer a call tomorrow.
 

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:ah:Any luck with finding out any answers on the pyrometer? Its racking my brain why I cant figure it out. Let me know if you find out something :ah:
 

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Discussion Starter · #14 ·
:ah:Any luck with finding out any answers on the pyrometer? Its racking my brain why I cant figure it out. Let me know if you find out something :ah:
Oh its driving me crazy when I shut the truck off and the pyro only goes down to 200*. I have a couple buddies with the same gauges, hopefully I will see them this weekend to see if theirs do the samething.
 

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When I let the truck sit all night, get in the next morning, turn the key forward, the pyro does go below 200* but only like 80*-90*. So who knows whats going on. Might give Autometer a call tomorrow.
As awenthol said, his meter holds the temp until you recycle the key, being that your getting a reading of 80~90* could that be the air temp or somewhere near there when you cycle the key, read the literature that came with the meter check if that is a standard feature and go from there
 

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Discussion Starter · #16 ·
Well I went to DHRA last weekend, and was looking at everyones pyro. :lol3: Almost every pyro I looked at was at 200*. So I don't think theres a problem. Thanks everyone for your help. :thumbsup
 

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wire them using shielded control wire,(looks like foil around the conductors) comes with a ground as well. ground at both ends, That will clear up any interference problems.
 
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