01 IS Won't rev past 4000
#1
10th Gear
Thread Starter
01 IS Won't rev past 4000
Hi guys!
I just bought a 2001 lexus is300 yesterday and to my surprise when I took it for a drive today i tried flooring it and it won't rev past 4000rpm, in neutral or driving, no engine light nothing.
I took it on the freeway in manual mode and dropped it into 3rd and engine light came on but when away when i shifted back in 4th since it wasnt over 4000rpm anymore
The guy wont tell me anything and it's really got me down thinking I just lost 4k D:
Any help would be awesome, thank you!
OBD2 Live data:
Here is my OBD2 Reader's live data at idle:
Fuel System 1: Closed Loop
Fuel System 2: Closed Loop
Load Value: 17.9%
Coolant Temp: 165*F
STFT - Bank 1: -5.4%
LTFT - Bank 1: 9.3%
STFT - Bank 2: -5.4%
LTFT - Bank 1: 6.2%
Engine RPM: 825 RPM
Vehicle Speed: 0 MPH
Ignition Advance: 10.5 deg
Intake Air Temp: 64*F
MAF Air Flow Rate: 0.5 lb/min
Throttle Position: 13.6%
Bank1 - Sensor1: O2S Output 0.105V
Bank1 - Sensor1: STFT - 0.7%
Bank1 - Sensor2: O2S Output 0.055v
Bank1 - Sensor2: STFT 99.0%
Bank2 - Sensor1: O2S Output 0.880V
Bank2 - Sensor1: STFT - 2.3%
Bank2 - Sensor2: O2S Output 0.165v
Bank2 - Sensor2: STFT 99.0%
I just bought a 2001 lexus is300 yesterday and to my surprise when I took it for a drive today i tried flooring it and it won't rev past 4000rpm, in neutral or driving, no engine light nothing.
I took it on the freeway in manual mode and dropped it into 3rd and engine light came on but when away when i shifted back in 4th since it wasnt over 4000rpm anymore
The guy wont tell me anything and it's really got me down thinking I just lost 4k D:
Any help would be awesome, thank you!
OBD2 Live data:
Here is my OBD2 Reader's live data at idle:
Fuel System 1: Closed Loop
Fuel System 2: Closed Loop
Load Value: 17.9%
Coolant Temp: 165*F
STFT - Bank 1: -5.4%
LTFT - Bank 1: 9.3%
STFT - Bank 2: -5.4%
LTFT - Bank 1: 6.2%
Engine RPM: 825 RPM
Vehicle Speed: 0 MPH
Ignition Advance: 10.5 deg
Intake Air Temp: 64*F
MAF Air Flow Rate: 0.5 lb/min
Throttle Position: 13.6%
Bank1 - Sensor1: O2S Output 0.105V
Bank1 - Sensor1: STFT - 0.7%
Bank1 - Sensor2: O2S Output 0.055v
Bank1 - Sensor2: STFT 99.0%
Bank2 - Sensor1: O2S Output 0.880V
Bank2 - Sensor1: STFT - 2.3%
Bank2 - Sensor2: O2S Output 0.165v
Bank2 - Sensor2: STFT 99.0%
Last edited by 4EFTE; 04-01-17 at 07:05 PM.
#3
10th Gear
Thread Starter
Thanks for the reply
so there is no stored codes, And I've hit two different places and they couldn't find a code either.
I've disconnected the battery and also have taken the ecu out to inspect/reset it being very gentle and it hasn't made a difference
I did notice that it's missing the a/c fuse but I don't think that would cause this problem...
so there is no stored codes, And I've hit two different places and they couldn't find a code either.
I've disconnected the battery and also have taken the ecu out to inspect/reset it being very gentle and it hasn't made a difference
I did notice that it's missing the a/c fuse but I don't think that would cause this problem...
#5
10th Gear
Thread Starter
the coolant is a beautiful ruby red.
The guy I bought it from said it needs a reflash because he let the battery die for too long etc and or that a brake sensor is touching or something :/
#6
drive it around under load for a few minutes. See if there's a check engine light or DTC that's triggered. Could be a number of issues,
MAF, Fuel pump, throttle body assembly.
Never heard of an ECU needing a flash after sitting for too long. not saying it doesn't exist, I've just never heard of this.
MAF, Fuel pump, throttle body assembly.
Never heard of an ECU needing a flash after sitting for too long. not saying it doesn't exist, I've just never heard of this.
#7
10th Gear
Thread Starter
drive it around under load for a few minutes. See if there's a check engine light or DTC that's triggered. Could be a number of issues,
MAF, Fuel pump, throttle body assembly.
Never heard of an ECU needing a flash after sitting for too long. not saying it doesn't exist, I've just never heard of this.
MAF, Fuel pump, throttle body assembly.
Never heard of an ECU needing a flash after sitting for too long. not saying it doesn't exist, I've just never heard of this.
SOoooo I have two options, either take it to PRE (portland racing engineering) and have them run it on their dyno or take it to toyota the stealership for the same price (around $150) to solve this situation because before I buy a ton of parts I would like a source x.x
UNLESS maybe it is the fuel pump etc, I have an obd2 that does live reading but Idk what to compare them to
Last edited by 4EFTE; 04-01-17 at 06:05 PM.
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#8
So I replaced the MAF and reset the ecu for the whole night then installed it all back together and didn't fix anything.
SOoooo I have two options, either take it to PRE (portland racing engineering) and have them run it on their dyno or take it to toyota the stealership for the same price (around $150) to solve this situation because before I buy a ton of parts I would like a source x.x
UNLESS maybe it is the fuel pump etc, I have an obd2 that does live reading but Idk what to compare them to
SOoooo I have two options, either take it to PRE (portland racing engineering) and have them run it on their dyno or take it to toyota the stealership for the same price (around $150) to solve this situation because before I buy a ton of parts I would like a source x.x
UNLESS maybe it is the fuel pump etc, I have an obd2 that does live reading but Idk what to compare them to
trac light blinking? Or is there an ABS light on?
#9
10th Gear
Thread Starter
#10
10th Gear
Thread Starter
Just as an update, we took off the crank sensor and noticed one of the crank gears teeth was damaged, gonna be changing it on Monday and will keep this up to date
Apparently previous owner tried to use a screw driver to get it off when they did the timing belt 8k miles ago smh...
Apparently previous owner tried to use a screw driver to get it off when they did the timing belt 8k miles ago smh...
#11
10th Gear
Thread Starter
FIXED
Soooo, after doing a complete timing belt kit etc and a new crank timing gear, she now revs past 4000!!!!
So ANYONE who is experiencing this, just take out your crank sensor and look into the small hole, you'll see small little teeth, have a buddy turn the crankshaft and watch all the teeth on the gear to see if something is damaged.
Mine was BARELY damaged but was just enough to let it run to 3500-4000rpm.
I love my now fully functioning 2JZ!!!
SIDENOTE:
My crank sensor was covered in oil though, so that could've also been the problem...
Soooo, after doing a complete timing belt kit etc and a new crank timing gear, she now revs past 4000!!!!
So ANYONE who is experiencing this, just take out your crank sensor and look into the small hole, you'll see small little teeth, have a buddy turn the crankshaft and watch all the teeth on the gear to see if something is damaged.
Mine was BARELY damaged but was just enough to let it run to 3500-4000rpm.
I love my now fully functioning 2JZ!!!
SIDENOTE:
My crank sensor was covered in oil though, so that could've also been the problem...
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