brens-is200

hi colin , thanks for the info unfortunately its definitely an issue internal to the diff itself 🫣 and will need to be replaced or fixed regards brendan

hi all. I'am looking for some help/guidance as I'am just back from my mechanic and we have diagnosed the rear diff as the cause of the rumbling/vibration felt when driving the car. When the car was up on the lift and spinning either wheel while placing my hand on either wheel bearing I could feel nothing however when i placed my hand on the diff casing there was a definite vibration from it . we checked the fluid and it was nice and clean, so my questions are: 1. has anyone else expierenced this and what was the cure 2. is it a common issue ? 3. whats the best way to repair it ?? thanks in advance Brendan

hi all thanks fro the help. It's been ongoing for a while and i put it down to old tyres so i was hoping that new tyres would cure the problem but no joy. ther is no wobble at speed or under braking and at lower speeds ( sub 50kph) its not an issue but is consistent when up at 100-120kph, it really does feel like somewhere in the drivetrain/chassis something is askew. I have read the link as poitned out by colinbarker and some of it is similar to my case so i need to contact my Lexus dealer and see if it apples or not. Thanks once again brendan

Hi all. I have a 2014 gs300h that is having a very odd sensation when driving. The best way I can describe it as an engine vibration/wobble when driving. It feels like a pulley wobble and only occurs when driving. The sensation is not transmitted to the steering at all but it's felt through the chassis, I have had the tracking done as well as a new set of Tyres to no avail. There is a pulley to the right as you look at the engine bay that has a very little bit of play in it but I don't know if it's related. As a matter of interest what does that pulley drive? I also noticed the heatshield is also loose put seems from what I have read is a design feature rather than an issue This is driving me nuts at the moment so any help greatly appreciated.

god iam getting fed up of this problem. brief update: moved coils from 1,2,3 cyl to 4,5,6, and vice versa removed shielding from the wires going to cyl 1 coil pack to see if there was any damage ( non found ) removed and cleaned the 2 Earth points on the head. ran car all day yesterday without issue but i dont trust that its fixed so is the possible fix one of the above I dont know , but it may just work for you. brendan

well another update cleaning the injector connections has made no difference but what i noticed is that the car runs fine from cold but once you turn it of and on again thats when the misfire occurs. I then let the car go cold and then ran it until it was hot with Torque pro running ( O2 sensors b1s1 b2s1b and b1s2 been monitored) all was fine until i shutdown the car and left it for a few minutes. Once restarted after a couple of seconds there was no output form sensor B2S1 . verified this a couple of time so looks like a bad 02 sensor , have one on order so will see how it goes. sadly after this its going to be the scrap keep as i have just doubled the value of the car so far ha ha . Cant understand how the B2S1 sensor is causing a misfire on cyl 1, a bad B1S1 faulty sensor makes sense but not the B2S1 can anyone enlighten me ?? thanks for looking Brendan

hi thanks for the reply and will see if i can find the source of the oil leak. regards brendan

just a quick work in progress update. I decided to check the resistances of the injectors and all within range of 13.4 -> 13.7 ohms. what i did discover was that injectors 1, 2 & 4 had oil in the electrical connectors see attached pictures. so having cleared out the oil and using electrical contact cleaner there is a marked improvement in the idle and so far no issues with the rough running. may be early days but will keep this thread updated as I have read lots of people having the same problems but never a solution been published. Injector 1 was by far the worst for the oil soakage and maybe this contributed to the misfire always been reported on cyl 1. however i couldn't see how the oil is getting into the connectors and wondering as anyone seen this behavior ?

hi PCM, thanks for that , i have checked the forums and the Web quiet deeply and have been unable to resolve the issues hence why i posted. regards Brendan

Hi all, got a problem on my 2003 Is200 automatic. when it gets up to temp it runs really rough and shows a flashing cel and P0301. this is a misfire on cyl 1. I have replaced the coil pack and all six spark plugs without success. It has also recorded a P0701 ( system too lean on bank 1 ) O2 volts bank 1 sensor 1 = 0.965 O2 volts bank 1 sensor 2 = 0.03v O2 volts bank 2 sensor 1 = 0.32v Using android and Torque Pro there is no visible sign of any wiring damage and i desperately looking on what else it could be. any help would be greatly appreciated thank in advance brendan

hi all Today I replaced the 3 belts on my 2001 IS200 and ended up ringing the nut holding on the pulley for the Air-con belt aagghhh . I have 2 questions 1 whats the part number of a new pulley 2. whats the part number of the nut that holds it in. ( or even what size nut is required as I'am sure I may have some in the shed but dont want to take it off as I need the car. ) thanks in advance brendan