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I have the plenum pulled apart on my 91 base L98. I am replacing the IAT among other things since I am this far.
I am finding two types of IATs in various listings. Is there a difference in the solid-tip type versus the open-tip type IAT?
I posted two pics of what I mean.
Currently, I have the solid tip type that appears to be an aftermarket. I would like to replace it with an OEM, but I am not sure which it comes with. The FSM shows a drawing of an open-tip type but the caption reads “typical” implying there could be differences.
Anyone have any expertise in IAT specifics?
Note - I am only doing research at this time. I have not decided where or what to purchase at this time.
The stock sensor is the sold brass type threaded into the bottom of the plenum. I have seen the open style on other gm cars but i haven't seen it on Corvettes or Camaros. I have used the open one in a miniram swap in a Corvette. That intake doesn't have the fitting for it.
Benny,
Thanks for the concise answer. That helps.
While the one currently in there is the sold-tip type, I had doubts when I saw the drawing in
the FSM showing an open-tip type. I guess GM used a generic “file drawing” for the manual.
I will just go get the same type that was already there.
Way too much time to tear down this TPI to swap it again anytime soon!
Intake Air Temp Sensor 91 base
