Lately I've been wondering if possibly I've got a problem with my IAT sensor. I haven't gotten any codes but my grid heaters cycle at weird times & I also seem to be getting pretty bad gas mileage. 13-14mpg in town...Sometimes after I drive the truck for a while & it gets up to normal op. tmps I can shut it down, wait 5 minutes, start it back up & my grid heaters start cycling again....Shouldn't the intake manifold have already gotten warm enough that it wouldn't need to cycle the grid heaters again? I live in Alabama too, so it's not like it's cold or anything.... I've already pulled the IAT sensor out & checked it & cleaned it....It wasn't even dirty at all.....I'm just wondering if it might have a problem....Is it very common for one to have a problem & the truck not throw any codes at all?
Lately I've been wondering if possibly I've got a problem with my IAT sensor. I haven't gotten any codes but my grid heaters cycle at weird times & I also seem to be getting pretty bad gas mileage. 13-14mpg in town...Sometimes after I drive the truck for a while & it gets up to normal op. tmps I can shut it down, wait 5 minutes, start it back up & my grid heaters start cycling again....Shouldn't the intake manifold have already gotten warm enough that it wouldn't need to cycle the grid heaters again? I live in Alabama too, so it's not like it's cold or anything.... I've already pulled the IAT sensor out & checked it & cleaned it....It wasn't even dirty at all.....I'm just wondering if it might have a problem....Is it very common for one to have a problem & the truck not throw any codes at all?