I just did an SR5 cluster upgrade and now that I have a tach I'm noticing the motor won't rev past 4300 RPM when floored. If I use a small amount of skinny pedal the motor will rev all the way up to 5700 RPM or so then hit the rev limiter. But, when I use half or full throttle the motor will flutter around 4300 RPM.
I may have some questionable vacuum lines but I am not sure if this could be a culprit because this problem is dependent on how much gas I use.
First thing that comes to mind was the TPS. So I pulled the throttle body and checked the TPS. It was out of adjustment so I moved it around till I got these results:
VTA-E2 (0.0mm) .70k Ohms
IDL-E2 (.57mm) .11k Ohms
IDL-E2 (.85mm) Infinity
VTA-E2 (OPEN) 4.55K Ohms
VCC-E2 (ANY) 5.83K Ohms
All parameters are good so I know the TPS is good. I also checked the AFM and came up with this:
E2-VS 450 Ohms
E2-VC 180 Ohms
E2-VB 280 Ohms
E2-THA 1.87k Ohms
I know the E2-VS is out of range by 50 ohms (should be 20-400) and according to the FSM, the AFM should be replaced. But with the AFM only being off by just that little amount, I am sceptical if this would by my problem.
btw: this motor is a 88 22re (4runner) with a fresh rebuild about 2500 miles ago. The motor has a 268 cam, Street RV head, LCE Header and is bored .030 over.
And I am getting a code for the water temp sensor and o2 sensor. I doubt these are related to my problem because as stated before, the motor will rev all the way if I use a light amount of gas.
So... Here's where you chime in
I may have some questionable vacuum lines but I am not sure if this could be a culprit because this problem is dependent on how much gas I use.
First thing that comes to mind was the TPS. So I pulled the throttle body and checked the TPS. It was out of adjustment so I moved it around till I got these results:
VTA-E2 (0.0mm) .70k Ohms
IDL-E2 (.57mm) .11k Ohms
IDL-E2 (.85mm) Infinity
VTA-E2 (OPEN) 4.55K Ohms
VCC-E2 (ANY) 5.83K Ohms
All parameters are good so I know the TPS is good. I also checked the AFM and came up with this:
E2-VS 450 Ohms
E2-VC 180 Ohms
E2-VB 280 Ohms
E2-THA 1.87k Ohms
I know the E2-VS is out of range by 50 ohms (should be 20-400) and according to the FSM, the AFM should be replaced. But with the AFM only being off by just that little amount, I am sceptical if this would by my problem.
btw: this motor is a 88 22re (4runner) with a fresh rebuild about 2500 miles ago. The motor has a 268 cam, Street RV head, LCE Header and is bored .030 over.
And I am getting a code for the water temp sensor and o2 sensor. I doubt these are related to my problem because as stated before, the motor will rev all the way if I use a light amount of gas.
So... Here's where you chime in