Texvet
OBS Enthusiast
Happy Saturday All -
My 1992 SCLB 1500 5.7 700R4 2WD shut off - sputter and spitting to a stop. My friends a AAA brought me and "Ole Donnie" home.
First thing I did was check fuel pressure - nothing (0 psi). Pulled codes and got 33 MAP (manifold absolute pressure) sensor circuit high (low vacuum).
I am not sure if the 33 code is the result all the sputtering and spitting it stalled out? Or if it could be responsible for cutting off the fuel pump? The fuel pump and filter are about 8 months old.
Before I start throwing parts at it....
What do you think? Could the 33 trouble code be responsible for shutting off the fuel supply?
If not - I'm thinking it could be the fuel pump relay? The fuel pump fuse is not blown. But, I need to understand what roll the trouble 33 plays.
Please give it thinkin and let me know your thoughts.
My 1992 SCLB 1500 5.7 700R4 2WD shut off - sputter and spitting to a stop. My friends a AAA brought me and "Ole Donnie" home.
First thing I did was check fuel pressure - nothing (0 psi). Pulled codes and got 33 MAP (manifold absolute pressure) sensor circuit high (low vacuum).
I am not sure if the 33 code is the result all the sputtering and spitting it stalled out? Or if it could be responsible for cutting off the fuel pump? The fuel pump and filter are about 8 months old.
Before I start throwing parts at it....
What do you think? Could the 33 trouble code be responsible for shutting off the fuel supply?
If not - I'm thinking it could be the fuel pump relay? The fuel pump fuse is not blown. But, I need to understand what roll the trouble 33 plays.
Please give it thinkin and let me know your thoughts.