Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Old May 2, 2008 | 08:09 PM
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hey guys! new to the sight and just wanted to say wats up. i am currently in the process of swapping a 99 ls1/t-56 into my 87 rx7 t2. im sure you guys know much more than i do and im sure im going to need to pick someones brain thats done this before. first, anyone have trouble getting the obd2 connector to communicate with the scanner? i know its simple, orange canstant power, purple is the serial data wire and the black with a white stripe goes to block ground and the solid black goes to chassis ground(not that it matters i dont think) any help would be greatly appreciated! thank guys!!!
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Old May 2, 2008 | 09:12 PM
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thats it, are you sure you have the orange to 12v constant? maybe its hooked up to a 12v switched on source.

As for the grounds, i just twisted the two blacks together and grounded it at a single location.

Mine works flawlessly.
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Old May 2, 2008 | 09:13 PM
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also, i'm not sure if it is like this with the ls1, but when i was trying to read codes for my eagle, the engine had to be running. So i just instinctively do that with my ls1 also.
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Old May 2, 2008 | 10:20 PM
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i checked the 12v constant and grounds already and as far as the codes go. i cant get the thing running for more than three seconds due to vats i believe? it starts, runs fine for 3-5 secs. and totally dies. i have 60-65 psi of fuel pressure the whole time. as its dying and i try to rev it, it just falls on its face and the motor stalls. losing injector pulse due to vats correct? if not i have to do more diag...ahhhhh! thanks and any help is greatly appreciated!
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Old May 3, 2008 | 12:31 PM
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www.ls1fc.com
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Old May 3, 2008 | 02:35 PM
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hey thanks fastfatboy. interesting stuff on that link but the diagram for the obd2 is the same as i have it wired im 99% positive the wiring is correct.thanks again!!
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Old May 3, 2008 | 08:24 PM
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Save the best for last


http://www.v8rx7forum.com/

The Holy Grail for LS1/V8 RX7's of all years...goooood stuff here.
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Old May 3, 2008 | 08:57 PM
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Welcome dude. Good luck with the build.
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Old May 4, 2008 | 07:37 PM
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hey does anybody know the size belt i need to run no power steering on an ls1 of course?
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Old May 4, 2008 | 09:45 PM
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Throw that question out there on v8rx7forum and they can surely answer that.
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Old May 5, 2008 | 05:09 PM
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thanks fadedfd. i got an answer right away on the p/s question. and for the obd2 connector i got it to communicate. the prob was i had the wrong wire from the obd2 connector spliced into c230. i assumed because the wire was purple that it went to purple,NO! i found out it goes to c230 pin"k" green wire and i made the correction and it worked fine! now tomorrow ill shut the vats off with efilive and see if it runs for more than 3-5 secs. thganks for the help guys!
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Old May 5, 2008 | 06:21 PM
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she will run tomorow 4 sure!!!!no more taxi's to work soon LOL
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Old May 5, 2008 | 08:32 PM
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HELL NO!!! I hate cabs! hopefully i can be in the 12s this summer!!!
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