OBDII conversion - troubleshooting time
#1
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OBDII conversion - troubleshooting time
Spin-off from this topic http://www.bonnevilleclub.com/forum/...247&highlight=
I decided to keep the topics separate as this one actually involves the conversion instead of just talking about it
Anyways, I have most, if not all, of the necessary components to do the conversion. Here is the list of items I had to beg, plead, trade, or flat out pillaged for. Keep in mind that this list may or may not be complete.
1996 or 1997 PCM (as they can control the 4t60e)
Same year PCM harness
1993 SSE firewall connector (to graft onto the new style harness for power, ground, sensor, and data. This allows to keep the original harness intact)
1994-1995 EGR assembly. This includes the pedestal.
1996-up S2 L67 MAP sensor array (optional. I wanted to keep my boost gauge, and running 2 MAPs will allow that, as the OBDII setup uses a MAP for boost reference). This also has the EVAP switching valve.
PCM tray and cover
OBD2 connector
S2 L67 temp sensor (not sure on this one yet. Pretty sure though)
1992(?)-1995 neural safety switch harness ends (they are different than what the OBDII harness has)
4-wire O2 sensor (depending on what I want, I may get a second one).
Keep in mind that I will have the PCM reflashed to mimic S1 tables. I will also have to repin the trans connector to work with the older configuration (and somehow graft a trans fluid temp sensor without opening up the trans). I also have alot of cross-breeding of harnesses to do.
Here is my work so far:
Overall shot of the engine. Looks pretty stock so far.
PCM tray installed
MAP sensor array installed
My next project is to start on the crossbreeding of the harnesses. God help me there
I decided to keep the topics separate as this one actually involves the conversion instead of just talking about it
Anyways, I have most, if not all, of the necessary components to do the conversion. Here is the list of items I had to beg, plead, trade, or flat out pillaged for. Keep in mind that this list may or may not be complete.
1996 or 1997 PCM (as they can control the 4t60e)
Same year PCM harness
1993 SSE firewall connector (to graft onto the new style harness for power, ground, sensor, and data. This allows to keep the original harness intact)
1994-1995 EGR assembly. This includes the pedestal.
1996-up S2 L67 MAP sensor array (optional. I wanted to keep my boost gauge, and running 2 MAPs will allow that, as the OBDII setup uses a MAP for boost reference). This also has the EVAP switching valve.
PCM tray and cover
OBD2 connector
S2 L67 temp sensor (not sure on this one yet. Pretty sure though)
1992(?)-1995 neural safety switch harness ends (they are different than what the OBDII harness has)
4-wire O2 sensor (depending on what I want, I may get a second one).
Keep in mind that I will have the PCM reflashed to mimic S1 tables. I will also have to repin the trans connector to work with the older configuration (and somehow graft a trans fluid temp sensor without opening up the trans). I also have alot of cross-breeding of harnesses to do.
Here is my work so far:
Overall shot of the engine. Looks pretty stock so far.
PCM tray installed
MAP sensor array installed
My next project is to start on the crossbreeding of the harnesses. God help me there
#2
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This intrigues me a lot. I have a 95 and cant find anything as far as a PCM tuner goes. I have plans to turbocharge my bonnie in the near future and need to be able to tune the PCM. But I am very limited with the OBD1.5 IMine has the OBD2 connector already. I would suspect that mine may be even easier to convert then?
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Originally Posted by samueljackson
what about the second knock sensor. did the 96-97 pcm'* use 2 ks'
Originally Posted by TheDude
This intrigues me a lot. I have a 95 and cant find anything as far as a PCM tuner goes. I have plans to turbocharge my bonnie in the near future and need to be able to tune the PCM. But I am very limited with the OBD1.5 IMine has the OBD2 connector already. I would suspect that mine may be even easier to convert then?
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what about utilizing the port bill refers to in the tech info for a temp gauge
http://www.bonnevilleclub.com/forum/...ght=trans+temp
http://www.bonnevilleclub.com/forum/...ght=trans+temp
#7
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Originally Posted by samueljackson
what about utilizing the port bill refers to in the tech info for a temp gauge
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I've talked to several members on here that seem to think that this idea should work, provided all the wiring is checked and double-checked. The Aeroforce addition would be great, but I am looking more for tuneability. This conversion should allow that, but the biggest obstacle would be making the tables from scratch. That'* gonna take alot of research.