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Found 7 results

  1. LS430 P0325

    I'm looking for answers to my mysterious knock sensor code on my 2001 LS430 180k miles. P0325 Knock sensor circuit 1 is the code I am recieving. Trying to do some preventative maintenance I changed the spark plugs with NGK laser iridium. Prior spark plugs I believe were the Densos. I as well changed a leaky PCV hose and went ahead and did the valve. The car ran great for roughly a week or so and then the code came and hasn't left. I seafoamed the car as well after getting the code. If I reset the code the car runs great, but returns shortly. I notice a slight tick and pinging under hard acceleration. Any suggestion would greatly be appreciated! I changed the spark plugs again also hoping maybe one of the NGK's was gapped incorrectly. I've went over the harnesses looking for shorts. It just seems strange I change the spark plugs and a knock sensor decides to give out.
  2. So my wife's 99 RX300 lit the check engine light and went into limp mode. Had the codes read and showed 2, one for air fuel ration and another for knock sensor voltage. I replaced the AF sensors front and rear first just because they are easy. no change. Next I replaced both of the knock sensors. this cured the knock sensor code but left me with a Lean Misfire on Bank 1. I cleaned the MAF, same thing so I replaced it, still the same. The last round I decided to replace the fuel injectors. While I had the intake off again I replaced the plugs and swapped the coils from the front bank to the rear, (if I did have a coil issue the code would should banks). It did run OK if you drive it like a Grandma. If you get on it, it will miss an sputter in the upper RPM range and throw the check engine light. P0171, P0330, P0250 are the current codes. Knock sensors are new along with other parts. right now I'm leaning to fuel delivery problems, fuel pump or pressure regulator. I drive a truck OTR so I'm not home but a limited amount of time and have a limited amount of internet access Because of that I've been dealing with this for over 6 months. Luckily I have a 92 Ford Explorer with 250,000 miles the purrs like a kitten she can drive Any insight would be appreciated Vehicle is a 1999 RX300 AWD 140,000 miles. had a new timing belt and water pump @ 120,000, O2 post cat and exhaust repair @ 125,000 along with parts mentioned in the post.
  3. Hello everyone, I have a 99 ES300. When I bought the car it had a check engine code, ended up being both knock sensors so I replaced them both along with the harness. I took it for a test drive and within 2 miles the codes pop up again 😔. I used aftermarket parts so I figured that was the problem. Then I repurchased the parts all with OEM this time, I get it all back together and again 2 miles down the road and code P0325 pops up car again goes into limp mode. So to sum it up I replaced the knock sensors and harness twice with NO cure to the problem. Could I be missing something or does this problem run deeper? Has anyone else experienced this problem?
  4. I have a 1999 RX 300 with 186k miles on it. Kept getting code for knock sensors, so i had mechanic change the sensors as the car would no go out of overdrive. Well had Knock sensors replaced and the P0325 and P0330 came back and car will not go into overdrive again. Any suggestions on what else to try. I have put in the Premium gas but that has not helped. The car runs great but MPG is down and worry about log trips. Will take any suggestions to help take care of problem or can i just drive it like it is?
  5. Hallo together, first please excuse my bad English. My Name is Holger I´m from Germany and I did bought (may not a good deal) a 00 LS 400 with low mileage. but it seems the knock Sensor is not working. OBD Error: P0325 - Generic Type Powertrain - Ignition System or Misfire - ISO/SAE Controlled Description Knock Sensor 1 Circuit Location Bank 1 or Single SensorI did found by searching: in http://us.lexusownersclub.com/forums/topic/31948-replace-knock-sensors/ You can change the knock sensors and wire harness without removing the intake manifold. Remove the EGR valve, PCV hose and you can get you hand into the V area of the block. A 27mm socket and small rachet with a flex head and the job is done. and in an other board: " IThe good news is that I just finished changing the right-side knock sensor, and the problem is fixed (no more pinging). It was fairly easy to change the sensor. The whole job including test drives took about 1 1/2 hours. I removed a couple of the plastic cover pieces between the manifold and the valve cover, and with a long screwdriver, gently removed the connector on the sensor (accessed on the right side of the engine thru the small openings around the manifold). I removed the knock sensor using a long 3/8 extension with a universal joint and a 1 1/16" sensor socket taped together to hold the tools together. I installed the new sensor using tape on the socket to hold it in place. FYI - The sensors are very tight in the block Read more: http://www.clublexus.com/forums/ls-1st-and-2nd-gen-1990-2000/183789-gen-1-ls400-knock-sensor-replacement.html#ixzz3sKFHmoMt " So my question i did not find an Answer: does this way to do the work similar with the VVTI Engine in the Late LS400? (Both up are for the older Engines) and may if any ever did change in the late Engine, did you use an OEM Part without Problems? Thank You!
  6. Hi I have lurked and mined for data, and need some help. I have seen posts recommending only using OEM knock senors, and I have seen posts where folks have used Rock Auto Standard parts, etc. What is the experience out there? Only replace with OEM (pricey) or save a buck and ues aftermarket. if aftermarket, which brand? Also if you have done this repair, how long has it been running since? Thanks
  7. Would like to know where the knock sensor is located on my vehicle so I can change them if the job isn't too difficult. Vehicle failed emissions, I replaced the throttle body which got rid of codes P1125, P1128, and P1780. Replaced O2 Sensor Bank 1 Sensor 1 which got rid of codes P0125 and P0135. Now I have P0325 Knock Sensor 1 Circuit Bank 1 Single Sensor code left along with P0753 Shift Solenoid A Electrical which I will do more research on for the transmission and post as a different topic unless someones gives references on this thread. Thanks for your help. P.S. can a bad spark plug cause the Knock Sensor code P0325 to come? I had it check out at a Toyota dealer and they gave me what I already knew which was the codes, so I went to work for myself on my vehicle and notice a plug wired was completely unscrewed and out of socket and I had a lot of leaks because I had several of my engine bolts so loose they were about to fall off. I wont speculated that someone did this but I don't know how my spark plug wire came out if I had them replaced at Lexus dealer during my timing belt change just over a year ago. Thanks for any help.