Which is more accurate?????
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
They both use the same data .... the PCM reports the coolant temp to the IPC which then displays it on the gauge and the DIC. Neither is more "accurate" .... though the DIC reports the data in a digital format, which may seem more "precise".
Former Vendor
Joined: Apr 2007
Posts: 1,331
Likes: 4
From: Jacksonville Florida
You are correct, but in my experience the guages generally are not in the best calibrated state. The DIC is always the more accurate of the two. For example, set your cruise control at 70 MPH according to your guage, 8 out of 10 Vettes i see will generally report 2-3 MPH difference on the DIC vs the guage. (IE the needle is set on 70 for cruise, but the DIC will report cruise set to 67-68 MPH)
