IAT sensor resistance
#31
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Year: 90,84
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IONO?? That's what it measured. I mean it was a harbor freight free DMM, but it can't be off that much!?!
I just put my best educated guess on the IAT vs. CTS statement. I don't know for sure, but I guess you don't know for sure either? What makes you think CTS is used? What would it calculate from it?
I just put my best educated guess on the IAT vs. CTS statement. I don't know for sure, but I guess you don't know for sure either? What makes you think CTS is used? What would it calculate from it?
Howdy...Well I don't know either, I'm not sure anybody does. And YES! exactly...both the engine ind the IAT use the same chart....but of course the engine sensor uses mostly conduction it's gonna be steady and reliable, where as the IAT is subject to lots if variables. Got figure the puter knows that.
The stupid net just erased 1/2 of typing!!!!
(I'll do it again with more flames!)
#33
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ANYWAY, IN THE TEXT THAT VANISHED, I MENTIONED THAT I GOT NEARLY 22 MPG ON A TRIP THIS SUMMER, AFTER REPLACING MY IAT WITH A 225 OHM RESISTOR,on MY 90 WITH OVER 225K. Also I went to 280 155 746 injectors... https://www.cherokeeforum.com/f2/199...r-swap-163105/ and did my O2 sensor>
https://www.cherokeeforum.com/f2/ren...ce-rms-133153/
AND removed the air restriction in the air-box that is between your air cleaner and the throttle body. You can rip it out with pliers.
https://www.cherokeeforum.com/f2/ren...ce-rms-133153/
AND removed the air restriction in the air-box that is between your air cleaner and the throttle body. You can rip it out with pliers.
Last edited by DFlintstone; 10-21-2013 at 12:29 PM.
#34
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#35
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Howdy...Well I don't know either, I'm not sure anybody does. And YES! exactly...both the engine ind the IAT use the same chart....but of course the engine sensor uses mostly conduction it's gonna be steady and reliable, where as the IAT is subject to lots if variables. Got figure the puter knows that.
The stupid net just erased 1/2 of typing!!!!
(I'll do it again with more flames!)
The stupid net just erased 1/2 of typing!!!!
(I'll do it again with more flames!)
#36
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yes in a perfect world the sensor will only read the air temp, but it is obviously affected by other sources albeit less than the air convection. I believe we are all basically in agreement that the air temp readings is higher in the manifold vs outside the manifold. I mean you moved the sensor outside for a reason, because the air is hotter in the manifold. Well, what is the reason the air is hotter in the manifold? Because of the conduction and radiation. So if conduction and radiation affects the air, why would it not affect the sensor as well. The plastic cage design is not immune to those heat sources, but it is designed to minimize their effects. The question is whether or not the Renix ECU programmers took that into account or not.
#37
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Anyway it seems to me a minor player. I've been runnen great for months with just the 225 ohm resistor. Here "cold" is just freezing. We shall see what happens then....
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