Are you using the factory Automatic with it?I could be on the wrong subforum but regardless, I have a 2001 IS300 2JZ VVTi engine swapped into a different car.
Like the title says, my engine has a rpm lock directly on 4K. Apart from this, everything works fine, though occasionally I will have a CrankShaft Position Sensor and CamShaft Position Sensor code pop up and then go away after a bit on its own. Ive replaced everything (to my knowledge) that could be related like the PRNDL Position Switch on the original trans, Throttle Body, Multiple Factory ECU's, and the MAF. It should be worth noting that the lockout is in all gears.
According to the engine shop I bought this engine from, it has 55K miles, factory oil changes, and no mods. The normal stuff. Does anyone know what I can do to fix this (apart from buying a aftermarket ECU) or lead me in the right direction?
4K rpm lockout
I could be on the wrong subforum but regardless, I have a 2001 IS300 2JZ VVTi engine swapped into a different car.
Like the title says, my engine has a rpm lock directly on 4K. Apart from this, everything works fine, though occasionally I will have a CrankShaft Position Sensor and CamShaft Position Sensor code pop up and then go away after a bit on its own. Ive replaced everything (to my knowledge) that could be related like the PRNDL Position Switch on the original trans, Throttle Body, Multiple Factory ECU's, and the MAF. It should be worth noting that the lockout is in all gears.
According to the engine shop I bought this engine from, it has 55K miles, factory oil changes, and no mods. The normal stuff. Does anyone know what I can do to fix this (apart from buying a aftermarket ECU) or lead me in the right direction?
Like the title says, my engine has a rpm lock directly on 4K. Apart from this, everything works fine, though occasionally I will have a CrankShaft Position Sensor and CamShaft Position Sensor code pop up and then go away after a bit on its own. Ive replaced everything (to my knowledge) that could be related like the PRNDL Position Switch on the original trans, Throttle Body, Multiple Factory ECU's, and the MAF. It should be worth noting that the lockout is in all gears.
According to the engine shop I bought this engine from, it has 55K miles, factory oil changes, and no mods. The normal stuff. Does anyone know what I can do to fix this (apart from buying a aftermarket ECU) or lead me in the right direction?
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Are you using the factory Automatic with it?
For the most part, yes. I'm using a normal automatic transmission out of an IS of the same year but different car of course.Are you using the factory Automatic with it?
Toyotas Beans (can-bus) is weird
Probably have to have every single sensor from the IS, most notably wheel speed sensors
Probably have to have every single sensor from the IS, most notably wheel speed sensors
I have a 2002 Lexus IS300 5 Speed Manual, had a similar issue where it wouldnt go past 4000 rpm. I had a CEL for P0440. Changed the fuel check valve for evap and the car stopped bogging. Goes to redline, driven 200 miles with no issuesI could be on the wrong subforum but regardless, I have a 2001 IS300 2JZ VVTi engine swapped into a different car.
Like the title says, my engine has a rpm lock directly on 4K. Apart from this, everything works fine, though occasionally I will have a CrankShaft Position Sensor and CamShaft Position Sensor code pop up and then go away after a bit on its own. Ive replaced everything (to my knowledge) that could be related like the PRNDL Position Switch on the original trans, Throttle Body, Multiple Factory ECU's, and the MAF. It should be worth noting that the lockout is in all gears.
According to the engine shop I bought this engine from, it has 55K miles, factory oil changes, and no mods. The normal stuff. Does anyone know what I can do to fix this (apart from buying a aftermarket ECU) or lead me in the right direction?
Have you checked for vacuum leaks and fuel pressure?For the most part, yes. I'm using a normal automatic transmission out of an IS of the same year but different car of course.
This is something I will definitely check out soon, thank you for your response.I have a 2002 Lexus IS300 5 Speed Manual, had a similar issue where it wouldnt go past 4000 rpm. I had a CEL for P0440. Changed the fuel check valve for evap and the car stopped bogging. Goes to redline, driven 200 miles with no issues
I have and they both check out as normal.Have you checked for vacuum leaks and fuel pressure?
This is something I will definitely check out soon, thank you for your response.
I have and they both check out as normal.
You have no cel codes?This is something I will definitely check out soon, thank you for your response.
I have and they both check out as normal.
As far as I know, through OBD2, there's no codes at all. No check engine light either.You have no cel codes?
Wheel speed sensor input?
It's possible, though from my previous attempts to fix my problem, I read upon that the wheel speed sensors are really only for the Speedometer (and a few other small things I'm 1000% forgetting rn)Wheel speed sensor input?
It’s can bus dude, everything effects everything- go stand-alone
You are probably correct with the wheel speed sensors. Our cars are very analog. The “Can bus” ,actually called BEAN, is really a single wire custom serial protocol. It doesn’t actually do anything useful. Nothing useful communicates over it. I’ve proved the BEAN bus and there’s not much there. The few sensors that are there update at a piss poor rate compared to modern day can bus. Incidentally modern day can bus modules DO communicate necessary sensor info over the bus.It's possible, though from my previous attempts to fix my problem, I read upon that the wheel speed sensors are really only for the Speedometer (and a few other small things I'm 1000% forgetting rn)
The engine ECU is SOLELY responsible for controlling the engine and SOLELY responsible for controlling the automatic transmission. The wheel speed sensors don’t interface directly at the engine ecu. It’s highly improbable it has anything to do with your problem. (Sidenote: traction control and VSC do depend on the wheel speed sensor. It can afffect the engine. However, the control is transmitted over a signal direct wire to the engine ecu from the abs/trac ecu. It is NOT on the BEAN system/ “can bus”. if you don’t have the is300 abs/trac ecu wired in, then this is of NO CONCERN. If you didn’t depin or cut very short those connections, you should do that just in case. Electricity can do magic stuff)
The manual for the auto doesn’t seem have any DTC codes where the rpm is locked at some certain rpm. I would think this means some engine sensor is the problem. Or maybe a misfire? Try replacing the crank and cam position sensor if you haven’t. I think it’s a little strange that the crank and cam sensors set code occasionally.
I’ve had a sketchy crank sensor that would occasionally cause the engine to cut above 2k-5k rpm. it was not consistent when it would freak out BUT I’m using a standalone so maybe the stock ecu is more tolerant of a sketchy sensor. The wiring for those sensors could also be a big problem. If the wires for those sensors aren’t shielded, shield them.
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