Aristo Swap Does Not What To Run
#18
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ok! next question. have you figured out what size the factory 2jzgte intake pipe is that holds the mass air flow sensor? if your three in pipe you have now is larger than factory it will throw off the fuel demands for the engine. even the slightest big larger than stock or smaller changes the fuel trims drastically.
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#21
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Don't know much about these swaps but I'll post some quick findings from other problems:
- Timing was off. He spun the crank by hand and noticed one of the cams was wobbling and skipping a tooth every other turn.
- Solved it by doing the 12v fuel pump mod. Apparently the fuel pump ECU wasn't communicating correctly and that fixed it.
- The signal wire to a fuel pump was no good so he ran a accessory power line to it
- Was "missing the igniter cable from the Ik1 orange body plug pin 8 black cable that goes to the igniter and got spark to the coils and fuel to the engine"
- Ground issue to the engine block, diagnosed it by running a jumper wire from the battery ground to engine block
- Jumped pins fp and b+ in the diagnostic box and turned the key to the on position to see if the fuel pump primes. IF it does then jump starter relay pins 3 and 5 to see if it starts
- Jumpered clutch start switch, another jumped neutral safety switch (manual problems)
- Too large of a intake pipe where the MAF sits, from member TURBO819 on here
- Check all cam/crank sensors
- Verified ECU was not immobilizer one
- Problem with grounding on igniter and resistor pack
- Blocked Idle Air Control valve
Here is a diagram on this thread of ECU pinouts. Someone's ground to the fuel injectors were disconnected, https://www.clublexus.com/forums/per...n-t-start.html
Another diagram thread: http://www.celicasupra.com/forums/sh...aristo-2jz-gte
- Timing was off. He spun the crank by hand and noticed one of the cams was wobbling and skipping a tooth every other turn.
- Solved it by doing the 12v fuel pump mod. Apparently the fuel pump ECU wasn't communicating correctly and that fixed it.
- The signal wire to a fuel pump was no good so he ran a accessory power line to it
- Was "missing the igniter cable from the Ik1 orange body plug pin 8 black cable that goes to the igniter and got spark to the coils and fuel to the engine"
- Ground issue to the engine block, diagnosed it by running a jumper wire from the battery ground to engine block
- Jumped pins fp and b+ in the diagnostic box and turned the key to the on position to see if the fuel pump primes. IF it does then jump starter relay pins 3 and 5 to see if it starts
- Jumpered clutch start switch, another jumped neutral safety switch (manual problems)
- Too large of a intake pipe where the MAF sits, from member TURBO819 on here
- Check all cam/crank sensors
- Verified ECU was not immobilizer one
- Problem with grounding on igniter and resistor pack
- Blocked Idle Air Control valve
Here is a diagram on this thread of ECU pinouts. Someone's ground to the fuel injectors were disconnected, https://www.clublexus.com/forums/per...n-t-start.html
Another diagram thread: http://www.celicasupra.com/forums/sh...aristo-2jz-gte
#22
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No problem! I'm not 100% sure but I think he is talking about "fuel dampers" as in the circuitry that dims the voltage to 5v or 9v for the fuel pump when not on full throttle. A lot of swap guys were only getting 1.5volts for some reason due to the ECU communication and did the 12 volt mod. One guy did it correctly though eventually and got the proper fuel pump ECU which was from an Aristo I believe without having to do the 12 volt mod
#23
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No problem! I'm not 100% sure but I think he is talking about "fuel dampers" as in the circuitry that dims the voltage to 5v or 9v for the fuel pump when not on full throttle. A lot of swap guys were only getting 1.5volts for some reason due to the ECU communication and did the 12 volt mod. One guy did it correctly though eventually and got the proper fuel pump ECU which was from an Aristo I believe without having to do the 12 volt mod
#26
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Same problem and symptoms I had when I did my swap. The ecu I got with the motor was bad. I had already ordered one on eBay thinking the motor I bought wasn't going to come with one so I had another in hand. As soon as my mechanic switched the ecu, it fired right up. Might wanna try swapping in another aristo ecu.
#27
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well everything is done accordingly to the swap there was noting I missed unless its a bad ECU...
#28
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Same problem and symptoms I had when I did my swap. The ecu I got with the motor was bad. I had already ordered one on eBay thinking the motor I bought wasn't going to come with one so I had another in hand. As soon as my mechanic switched the ecu, it fired right up. Might wanna try swapping in another aristo ecu.
#30
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its none immobilizer ECU...........Well I did unplug the MAF sensor it started right up but that was with the fuel pump disconnected ... so I try it again with the Fuel Pump plugged back in it Wanted to start but then it didn't ...........