Ultimate Guide to Parameter Monitoring?

[johnredding]

Hey @Sid3wayS so I watched the bats and they were around 120f but when I parked at work after stop and go traffic it was at 160-169 but the intake air temp was roughly the same..is that normal?

[Sid3wayS]

Originally Posted by ANITIX87 I thought the whole point of injector cut off is to save fuel and that completely shuts off fuel to the engine since the spinning wheels cause the engine to windmill when engine braking or coasting in gear. The lowest I have seen my fuel pressure go so far is 405psi during engine braking. TIS Tapatalkative.

That I know of our cars do not do this, but im not 100%. Being as thou there is fuel pressure at all levels of cruising, engine braking, idle. and WoT I would be left to think that our injectors do not "turn off". I know some economy 8 cylinders do this such as the tahoe but it only shuts off half the injectors while crusing so that it essentialy only waists as much as a 4 cylinder.

Originally Posted by johnredding Hey @Sid3wayS so I watched the bats and they were around 120f but when I parked at work after stop and go traffic it was at 160-169 but the intake air temp was roughly the same..is that normal?

Well considering that you were stopped, the intake is sucking all the hot air from inside the engine bay. Add to that the no air is passing infront of/on top of your intercooler, it is basicly just sucking in hot air and pushing it into your motor with no way of being cooled. This is a normal occurance and as sson as you begin to move that cooler ambient air enters the engine bay and flows on the intercooler the temps will begin to drop.