Coolant temperature sensor fault causing low boost

TM t44tq at
Sat Jul 10 22:02:22 EDT 2004

I've recently had a problem with low boost and poor
boost ramp-up, seeing only 10psi constant after a long
time of WOT. Just after observing this problem intermittently
a few times, I had a radiator neck failure, so I wasn't sure
if the two events were connected.

Now following the radiator replacement, I've found that I still
have a low boost problem after the engine is hot- pulled codes
and found coolant temperature sensor, intermittent fault.

Doing the Bentley diagnostic, it seems like the multifunction temp
sensor is fine, this doesn't really make sense.

I didn't see any other sensors other than the radiator fan sensor
on the radiator and the afterrun pump temp sensor.

Did I miss anything?


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