I'm wondering if the the PCM controls the Fuel Tank Pressure Sensor on a 1997 K1500?
Thanks,
dave w
I'm wondering if the the PCM controls the Fuel Tank Pressure Sensor on a 1997 K1500?
Thanks,
dave w
P0452 Evaporative Emission Control System Pressure Sensor Low Input
P0453 Evaporative Emission Control System Pressure Sensor High Input
Are both listed in 1997 Vortec cal and both unchecked for no reporting.
I think P codes are from PCM, then there's B codes which are Body Control Module, and C codes which are ABS/Suspension... there's a pattern but some codes overlap like these Fuel Sender is in B and Fuel Tank Pressure in B on later vehicles...
Then U codes is missing data stuff.
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
That has me thinking, I need to find the published technical material to figure out if the fuel tank pressure sensor is an input / output to the Evaporative Emission Purge Valve (which is controlled by the PCM). I'm thinking most likely an input, but where? The fuel tank is from a single tank system, so is the fuel tank pressure system used by the fuel pump balance system? The vehicle is a daily driver, that has to pass emissions, so I need to get my homework done correctly.
dave w
NM. much better explanation Robert.
Last edited by gregs78cam; 05-26-2013 at 06:27 AM.
1978 Camaro Type LT, 383, Dual TBI, '7427, 4L80E
1981 Camaro Z-28 Clone, T-Tops, 350/TH350
1981 Camaro Berlinetta, V-6, 3spd
1974 Chevy/GMC Truck, '90 TBI 350, '7427, TH350, NP203, 6" lift, 35s
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
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