Finally an update and a few more questions regarding my LC conversion from a
2LT-E to a 2LT.
I needed to replace the engine in my 1990 Prado EX5 and ordered a used engine from Japan. Received a wrong engine twice and after months of searching and waiting I've decided to go with the 2LT. At the time it seemed like a good idea and the only real problem was the missing hole for the Crank Angle Sensor (CAS) or Crankshaft Sensor.
After the conversion, the engine was running fine, but with limited power. As I've learned on this forum it was running in limp mode because of the CAS not giving a signal to the computer.
I've found a couple links and pictures of a set-up where the CAS is mounted so it's pointing to one of the pulleys.
A small piece of metal is triggering the signal or to be more precise, is producing the AC current.
I've found a welder and learned how to weld and started fabricating a bracket to hold the CAS in place. Welded a small, rectangular piece of metal to the pulley. The set-up pretty much matches the original set-up. The size of the metal trigger and the distance from the sensor to the metal piece. I've actually mounted two sensors - one is hooked up to the computer/engine. The other one is hooked up to an oscilloscope I've borrowed to see if it's producing a consistent wave. It is. The pulse width is 71 ms and its 13.3 Hz. The voltage is roughly 1.4V.
Resistance is 22.88 Ohms.
So here's the problem: It works, but not all the time. I start the engine up and no check engine light comes on. I can drive for a while in first or second gear. Full power, uphill the turbo kicks in and all is fine. Then the check engine light comes on and I can feel the engine running in safe mode with less power. Unless I slow right down the light stays on. So, its on and off roughly 50% and I can not find a rhythm to it. It doesn't really seem to be related to speed or anything else. Sometime the check-engine light comes on at 3000 RPM, sometimes sooner.
I've been playing and adjusting the setup for two days now and it does get better, but its not perfect.
What else can I try? Should the set-up work? Isn't the fact that it runs for a while without the check engine light a good indication? Is there anything else that could cause the problem?
I'm running out of time and really need my vehicle, any suggestion for a good mechanic who can solve my issue? I'm in the BC Interior but would travel to Kamloops, Vancouver even Calgary if I'd knew someone can get the LC running for me...
I'm attaching a few pics showing the CAS set-up.
Thanks for your help in the past with this! Sorry for the long post.
2LT-E to a 2LT.
I needed to replace the engine in my 1990 Prado EX5 and ordered a used engine from Japan. Received a wrong engine twice and after months of searching and waiting I've decided to go with the 2LT. At the time it seemed like a good idea and the only real problem was the missing hole for the Crank Angle Sensor (CAS) or Crankshaft Sensor.
After the conversion, the engine was running fine, but with limited power. As I've learned on this forum it was running in limp mode because of the CAS not giving a signal to the computer.
I've found a couple links and pictures of a set-up where the CAS is mounted so it's pointing to one of the pulleys.
A small piece of metal is triggering the signal or to be more precise, is producing the AC current.
I've found a welder and learned how to weld and started fabricating a bracket to hold the CAS in place. Welded a small, rectangular piece of metal to the pulley. The set-up pretty much matches the original set-up. The size of the metal trigger and the distance from the sensor to the metal piece. I've actually mounted two sensors - one is hooked up to the computer/engine. The other one is hooked up to an oscilloscope I've borrowed to see if it's producing a consistent wave. It is. The pulse width is 71 ms and its 13.3 Hz. The voltage is roughly 1.4V.
Resistance is 22.88 Ohms.
So here's the problem: It works, but not all the time. I start the engine up and no check engine light comes on. I can drive for a while in first or second gear. Full power, uphill the turbo kicks in and all is fine. Then the check engine light comes on and I can feel the engine running in safe mode with less power. Unless I slow right down the light stays on. So, its on and off roughly 50% and I can not find a rhythm to it. It doesn't really seem to be related to speed or anything else. Sometime the check-engine light comes on at 3000 RPM, sometimes sooner.
I've been playing and adjusting the setup for two days now and it does get better, but its not perfect.
What else can I try? Should the set-up work? Isn't the fact that it runs for a while without the check engine light a good indication? Is there anything else that could cause the problem?
I'm running out of time and really need my vehicle, any suggestion for a good mechanic who can solve my issue? I'm in the BC Interior but would travel to Kamloops, Vancouver even Calgary if I'd knew someone can get the LC running for me...
I'm attaching a few pics showing the CAS set-up.
Thanks for your help in the past with this! Sorry for the long post.
