08' Lexus LS460 P0012 and poping/creaking noise when turning
09-10-23, 07:24 AM
#1
10th Gear
Thread Starter
08' Lexus LS460 P0012 and poping/creaking noise when turning
I don't know if this is the correct thread so I apologize if it is not...
I got a 08 Lexus LS460 with 140k miles that I recently purchased couple of months ago. Recently I noticed the check engine light was on for P0012 Code: Intake (A) Camshaft Position Timing – Over-Retarded (Bank 1).
I had the oil changed and flushed out thinking it's dirty oil and than I took it to my mechanic and he changed the Bank 1 solenoid which I believe is on the drivers side (this car has two solenoids) check engine came back on as soon as I drove off...he's thinking it'a a timing chain issue but no symptoms of that at all...This car is so over complicated that I don't know where to even begin! Sensors and electronics everywhere...
Than I noticed a very close clicking/screeching noise when I may slow or even fast turns and steering when will click when I am stationary if I turn it...
I got a 08 Lexus LS460 with 140k miles that I recently purchased couple of months ago. Recently I noticed the check engine light was on for P0012 Code: Intake (A) Camshaft Position Timing – Over-Retarded (Bank 1).
I had the oil changed and flushed out thinking it's dirty oil and than I took it to my mechanic and he changed the Bank 1 solenoid which I believe is on the drivers side (this car has two solenoids) check engine came back on as soon as I drove off...he's thinking it'a a timing chain issue but no symptoms of that at all...This car is so over complicated that I don't know where to even begin! Sensors and electronics everywhere...
Than I noticed a very close clicking/screeching noise when I may slow or even fast turns and steering when will click when I am stationary if I turn it...
09-10-23, 08:18 AM
#2
Solenoids are exhaust. Intake are VVT-iE motors. Best case scenario - you need new motor. Worst case - chains are stretched.
09-10-23, 08:42 AM
#3
Lead Lap
iTrader: (1)
It's good that you understand that the car is very complex. The steering wheel clicking is a different issue from timing chain, obviously. Over the years I can recall threads with similar issue. There are several plastic parts in the steering wheel, there is a shaft that goes through firewall with universal type joints, the steering is electric and has parts that can click. It could be multiple points from your description. Wish I could be more specific. If there is no performance issue with steering, you may wish to defer addressing the click.
Depending on service history, you're overdue for coolant, brake fluid and transmission services. Do monitor the coolant overflow bottle for loss of fluids before hand. At your mileage it's possible there are leaks. Transmission is trickiest as a partial drain and fill is recommended 2-4 times with use in between. Some like to drop pan, and change filter. Either way, it's never a full fluid exchange with one service. Whoever does your services should have familiarity with Lexus procedures.
More versed members can advise you about what other services to do if the timing chain needs replacement.
Depending on service history, you're overdue for coolant, brake fluid and transmission services. Do monitor the coolant overflow bottle for loss of fluids before hand. At your mileage it's possible there are leaks. Transmission is trickiest as a partial drain and fill is recommended 2-4 times with use in between. Some like to drop pan, and change filter. Either way, it's never a full fluid exchange with one service. Whoever does your services should have familiarity with Lexus procedures.
More versed members can advise you about what other services to do if the timing chain needs replacement.
09-10-23, 08:53 AM
#4
10th Gear
Thread Starter
09-10-23, 08:58 AM
#5
He meant the vvt motor.
09-10-23, 09:01 AM
#6
10th Gear
Thread Starter
09-10-23, 09:03 AM
#7
Uhm, nope. Chains can be serviced. I replaced 10+ chain sets on UR-FSE - old cars, bad thick oil = chains stretch. Heck of a job though, barely doable with engine in... We use 4ch oscilloscope to see cam/crank corelation and compare to factory/known good waveforms.
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09-10-23, 09:12 AM
#8
10th Gear
Thread Starter
Do you know the part# for the vvt motor?
09-10-23, 09:21 AM
#9
10th Gear
Thread Starter
It's good that you understand that the car is very complex. The steering wheel clicking is a different issue from timing chain, obviously. Over the years I can recall threads with similar issue. There are several plastic parts in the steering wheel, there is a shaft that goes through firewall with universal type joints, the steering is electric and has parts that can click. It could be multiple points from your description. Wish I could be more specific. If there is no performance issue with steering, you may wish to defer addressing the click.
Depending on service history, you're overdue for coolant, brake fluid and transmission services. Do monitor the coolant overflow bottle for loss of fluids before hand. At your mileage it's possible there are leaks. Transmission is trickiest as a partial drain and fill is recommended 2-4 times with use in between. Some like to drop pan, and change filter. Either way, it's never a full fluid exchange with one service. Whoever does your services should have familiarity with Lexus procedures.
More versed members can advise you about what other services to do if the timing chain needs replacement.
Depending on service history, you're overdue for coolant, brake fluid and transmission services. Do monitor the coolant overflow bottle for loss of fluids before hand. At your mileage it's possible there are leaks. Transmission is trickiest as a partial drain and fill is recommended 2-4 times with use in between. Some like to drop pan, and change filter. Either way, it's never a full fluid exchange with one service. Whoever does your services should have familiarity with Lexus procedures.
More versed members can advise you about what other services to do if the timing chain needs replacement.
09-10-23, 09:24 AM
#10
09-10-23, 09:33 AM
#11
10th Gear
Thread Starter
Anyway, I am not finding the VVT motor? Do you have a part? Is it the below one?:
09-10-23, 09:39 AM
#12
Those are matched to your vin, no universal part no exists.
09-10-23, 09:47 AM
#13
10th Gear
Thread Starter
09-10-23, 09:54 AM
#14
Lead Lap
iTrader: (1)
I agree with Boykie, it's always best to use VIN to find exact parts. BTW, the price I mentioned is MSRP, it can be purchased for less. Considering how little the car was used, it'd be wise to perform all fluid services I mentioned. IMHO. Fluids were likely untouched for many years. As he mentioned, neglected oil can cause issues. This may very well be the case here with the new info you provided. FWIW, this is a relatively low mileage car at a good price, worth catching up on deferred services to enjoy for many years to come.
09-10-23, 10:00 AM
#15
10th Gear
Thread Starter
I agree with Boykie, it's always best to use VIN to find exact parts. BTW, the price I mentioned is MSRP, it can be purchased for less. Considering how little the car was used, it'd be wise to perform all fluid services I mentioned. IMHO. Fluids were likely untouched for many years. As he mentioned, neglected oil can cause issues. This may very well be the case here with the new info you provided. FWIW, this is a relatively low mileage car at a good price, worth catching up on deferred services to enjoy for many years to come.
Last edited by TheArc23; 09-10-23 at 10:04 AM.