Question about Haynes Repair Manual for Toyota Highlander 2001 thru 2007 and Lexus RX 300/330 1999 thru 2006 Does not include information specific to hybrid models

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Can a faulty brainbox affect the performance of the transmission in a lexus rx300 2001 model?

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Yes

Posted on Apr 28, 2015

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I have a 2000 Lexus rx300 with a code p1130. what is the location of the sensor causing this code ?


That code doesn't mean any sensor is defective, it can be the sensor, problems with the engine or a faulty fuel injector or the wiring or the engine control computer that triggered the fault.



P1130 Lexus Air Fuel Ratio Sensor Circuit Range Performance Malfunction...

Apr 30, 2017 | Lexus Cars & Trucks

2 Answers

Can a weak brainbox cause fuel to be mixed with engine oil


Why do you think there is fuel in the oil? Does it smell like it? Or is the dipstick level climbing? Tell us more about the problem and what you have already tried/done. When was the car last fully serviced? Poor maintenance is no excuse for poor running.

Mar 30, 2015 | Lexus Cars & Trucks

1 Answer

We recently had a different transmission put in our 1991 plymouth voyager and it still droped down to first and then a new brainbox it still drops to first what else could it be some one was saying wo


replace the input and output turbine sensors,its a common problem with those transmissions,they both screw in to the front of the transmission,yopu should be able to get them at any parts store

Dec 27, 2014 | Plymouth Cars & Trucks

1 Answer

My brainbox was stolen and i want a perfect replacement for it


You might need to get a hold of your Lexus dealer, I know some companies set the ECU to the VIN # of the vehicle to try and prevent the selling of stolen parts. If this is the case with your Lexus then you will need to have the used ECU flashed to your VIN # before it will work properly, or you might even need to replace with a new unit.

Aug 23, 2014 | 2001 Lexus RX 300

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Code p0330 knock sensor does this affect the way it shifts if engine light is on


Possible but unlikely. Code p0330 refers to knock sensor(KS) 2 bank 2-circuit malfunction==causes --wiring --KS--ECM. Replace the KS. The engine light is telling you that there is a problem with sensors in the ECM and that is what will be affecting the performance . Shifting is the area of the TCM( transmission control module ) so have that checked out as well

Oct 26, 2013 | 1999 Lexus RX 300

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How can I fix my ******?


You may be able to get a readout on some scanners to diagnose the servo solenoids and brainbox for your truck. You may also have problems with the Torque converter that is affecting the trans.

About all you can do is change the trans filter and fluid, and with a measure of difficulty, the shift solenoids and perhaps a Vacuum control. If pressure readings are taken externally, some diagnosis is possible.

Have to truck towed to a place for diagnosis if it is not driveable. If a place tells you they will not know until the trans is bench checked, this is largely true.

There are 2 ways to fix a trans. Complete rebuild or replace only worn parts.

In conclusion, the Electronics can adversely affect the performance of the trans. A part called a PCM adjusts trans shifts and it can be reprogrammed for proper performance. You need a diagnosis.

Please rate my info.

Jan 31, 2013 | 2004 Ford F150

2 Answers

I HAVE A MAZDA 626 98 AMERICAN MODEL WITH BRAINBOX NUMBER F82F-12A650-GF. THE BRAINBOX IS DAMAGED AND I HAVE LOOKED EVERY WHERE WITHOUT SUCCESS OF REPLACING THE BRAINBOX WITH THE SAME NUMBER. CAN U HELP...


Majority problem on the ECU is the leaky electrolytic capacitors.
If you has the time to do soldering then you can fix the brain box for under $15 vs $120+ for a use one.
Just open the cover and look for damage (over-heated + leaked) capacitors.

Jul 28, 2011 | 1998 Mazda 626

1 Answer

2001 CHEVROLET 2500 SILVERADO WITH THE 6.0 LITRE ENGINE & 4L80E TRANSMISSION. WITHOUT ANY WARNING EXCEPT FOR POSSIBLY THE GAUGES NOT READING RIGHT & BATTERY LIGHT COMING ON A COUPLE DAYS BEFORE THE...


You may have a power problem, the battery light is an indicator of charging problems that can affect performance of electrial componets [ the transmission is controled that way ]. Have the charging system checked out. If you had an alternator replaced recently then it could be a faulty remanufactured one - this is very commom with this model alernator.

Mar 22, 2011 | Chevrolet Silverado 2500 Cars & Trucks

1 Answer

Lexus rx300,2001, how to change knock sensor#2? where is knock sensor#2?


some are on the cylinder head or on the side of block . they screw in .

Dec 13, 2010 | 2001 Lexus RX 300

2 Answers

Dinghy Towing


Yes, depending on the year of the vehicle. Roadmaster (800-669-9690) will give you all the info you need for the tow bar and brackets for the car. Remco (800-228-2481) will give you all the info you need to make the car towable. It will take a lube pump for the transmission- model LP-7. Remco does not answer email inquiries,but they are very good on the phone. I bought all of the gear through Roadmaster at the FMCA meeting in Indio in January, so I would recommend your start with a call to Roadmaster. Be advised that the 2010 Lexus RX-350 CANNOT be made towable. The 2007-2009 can be. Also be advised that, if you do this, it will void your warranty- at least as far as the transmission is concerned. The local Lexus dealer told me it would not affect the warranty on other parts of the car. Good luck

Feb 15, 2009 | 2008 Lexus Rx 350

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