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- #481
Another member asked the same question. I was able to confirm the timing is advancing with rpm’s. It does appear to be working as it should. I am using Techstream as pointed out.
I appreciate the feedback.
Build US Spec. February 1990 Poverty 80 2uz/h151f swap
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Another member asked the same question. I was able to confirm the timing is advancing with rpm’s. It does appear to be working as it should. I am using Techstream as pointed out.
I appreciate the feedback.
- Thread starter
- #482
Last night I was trying to collect some data for Tim in live stream and it didn’t go well. I need to back up though.
On Sunday night I tried swapping my second ecu to see if it performed differently. After swapping the ecu the pedal was dead no response and no trouble codes. I swapped the other ecu back in and no change the pedal was still dead.
Tim sent me the circuits to test, I tested continuity, didn’t find anything wrong all tests were good. After plugging everything in the pedal worked in full range idling in the garage. I tried to take it out for a drive and when I got to the main road the pedal was unresponsive again but I got two trouble codes this time, P0101 and P2111. I drove home with the pedal to the floor in first gear and it moved the truck just enough to get home but didn’t even register 5mph. It was a slow drive home to contemplate my choices.
My laptop fell off the seat when I turned around and broke the screen, so I cannot read tech stream any more until I fix or replace it.
I checked the throttle plate function after getting back and found that it opens fully when the pedal is pressed to the floor. The pedal appears to be communicating with the throttle body correctly.
It seems like every time one issue is solved another one is presented.
I think I may be nearing my limit for time and money on this engine. I really wanted the extra HP of the VVTI while still running regular gas. It just seems that with all the changes to the ecu to delete systems in order to simply it, something is not working. That is all I can come with anyway.
It has now been well over three years of trying to get it to run correctly. I have talked to a number of Toyota techs of varying skill who have been extremely helpful and other members that have done similar builds. They have all helped me test and eliminate potential causes. It does not appear that there is anything wrong with the engine or sensors. The most common conclusion is the problem is with the ecu.
I know Tim is planning to flash the second ECU to match or mimic an ecu from the South African market where the 2uz VVTI did not come with SAI. If it does not work I may be looking at scrapping the VVTI engine.
I really want to enjoy using this 80 rather chasing endless issues with the VVTI, at some point this either works or it doesn’t.
On Sunday night I tried swapping my second ecu to see if it performed differently. After swapping the ecu the pedal was dead no response and no trouble codes. I swapped the other ecu back in and no change the pedal was still dead.
Tim sent me the circuits to test, I tested continuity, didn’t find anything wrong all tests were good. After plugging everything in the pedal worked in full range idling in the garage. I tried to take it out for a drive and when I got to the main road the pedal was unresponsive again but I got two trouble codes this time, P0101 and P2111. I drove home with the pedal to the floor in first gear and it moved the truck just enough to get home but didn’t even register 5mph. It was a slow drive home to contemplate my choices.
My laptop fell off the seat when I turned around and broke the screen, so I cannot read tech stream any more until I fix or replace it.
I checked the throttle plate function after getting back and found that it opens fully when the pedal is pressed to the floor. The pedal appears to be communicating with the throttle body correctly.
It seems like every time one issue is solved another one is presented.
I think I may be nearing my limit for time and money on this engine. I really wanted the extra HP of the VVTI while still running regular gas. It just seems that with all the changes to the ecu to delete systems in order to simply it, something is not working. That is all I can come with anyway.
It has now been well over three years of trying to get it to run correctly. I have talked to a number of Toyota techs of varying skill who have been extremely helpful and other members that have done similar builds. They have all helped me test and eliminate potential causes. It does not appear that there is anything wrong with the engine or sensors. The most common conclusion is the problem is with the ecu.
I know Tim is planning to flash the second ECU to match or mimic an ecu from the South African market where the 2uz VVTI did not come with SAI. If it does not work I may be looking at scrapping the VVTI engine.
I really want to enjoy using this 80 rather chasing endless issues with the VVTI, at some point this either works or it doesn’t.
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Do you have a speed sensor for the toyota ecm? What gear is it locked into?
- Thread starter
- #484
It is powered in 2nd gear. There is no speed sensor wired on my setup. Tim’s harness is built such that there is not a provision for the sensor.