Odd inconstant logging with HPT scanner
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Joined: May 2009
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From: over dere
Odd inconstant logging with HPT scanner Noticed this today... the engine rpm logged waves up and down. At one shift it never even logged the throttle being released on the TPS. The injector duty cycles, NB MV’d and injector data stays constant during the waving RPM. Anyone else experience this?
This sounds like it could be a grounding issue. Is your battery in the trunk or in the engine bay. If it's in the trunk, there should be a ground from the negative terminal of the battery to the engine block directly. Grounding issues extend themselves to scanner data as the sensors go silly.
Noticed this today... the engine rpm logged waves up and down. At one shift it never even logged the throttle being released on the TPS. The injector duty cycles, NB MV’d and injector data stays constant during the waving RPM. Anyone else experience this?
https://youtu.be/XT819Isend4
https://youtu.be/XT819Isend4
Thread Starter
10 Second Club
Joined: May 2009
Posts: 3,427
Likes: 226
From: over dere
This sounds like it could be a grounding issue. Is your battery in the trunk or in the engine bay. If it's in the trunk, there should be a ground from the negative terminal of the battery to the engine block directly. Grounding issues extend themselves to scanner data as the sensors go silly.
maybe try a new USB a to b cable? i wanted a longer one and the cheap *** replacement i got would drop channels
areyou logging w/bthru the mpvi inputs? that little adapter thing the screw can back out so i loctite em after putting the wire in
areyou logging w/bthru the mpvi inputs? that little adapter thing the screw can back out so i loctite em after putting the wire in
I'm assuming you have hpt pro with the green panel of possible wire inputs. So just making sure your analog output from your wideband harness is going to mpvi slot 1 and your analog ground from your wideband harness going to mpvi slot 5, as far as clearing up wideband related things go. If that's what you have and still see issues, run an additional ground wire from your negative battery terminal to your mpvi ground slot #5.
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