By Logan pool
I took my 98 ls400 to a mechanic because the car would not accelerate unless it was completely floored, I had already replaced the throttle position sensor and I took it to the mechanic to replace the acceleration position sensor, after he replaced it and reconnected the battery the car wouldn’t even start anymore and he was getting codes for something like a security problem, and the security light was flashing but if I remember right it has always been flashing. There was also a code for the ECM (computer), I have no idea what the problem is so anything anyone can tell me would help, thank you.
My daughter totaled her 95 so we found a 96 and put the much lower mile engine in. Engine runs fabulous just like in the other car. After a few hours of running, the engine light comes on. Nether LS had codes before the swap Checked codes and get these: "PO450 Evaporative Emission System Pressure Sensor Sensor/ Switch" and "PO430 Catalyst System Efficiency Below Threshold Bank 2". .
What I could find on out there was limited but I believe the 96 had an emission system that the 95 did not. I still have the 95 as a parts car so looking for best options to turn the engine light off for these errors. Again, engine runs fine and she is driving it every day.
Thanks in advance for any assistance.
I recently purchased a 1997 Lexus ls400 coach edition with 176k miles. As we were driving it home, the check engine light came on. We took it in to a shop that we've been going to for years and got a reading. They said it was the catylitic converters and that they needed to be replaced in order to pass inspection in Virginia. Since that shop only used brand new parts, each converter would cost around 2 grand. I started looking for cheaper alternatives and found some on rock auto and carparts.com for around $42-300 and was wondering if those would be a good idea to buy. Most of the ones I found had warranties so that would lessen the risk.
By Dylan Schultz
i have a 98 ls400 with about 244,000 miles on it. I’m having this very odd issue with the car. When I come to a stop light/ sign, the battery light comes on, rpms drop straight to 0 and the engine dies. Air and radio some times stay on. If I put it in park and restart the car the light goes away then its fine to drive until.. ya guest it I come to another stop. It does the exact same thing over an over at each complete stop. I assumed it was the alternator and I replaced it yesterday. No battery light, or weird idols happened for about a day. it is back to doing the battery light thing. If anyone has any Ideas of what it could be, or how to fix this issue id really appreciate it. ALSO not sure how old my battery is, changed the negative battery terminal when I did the alternator. Positive could be the problem (Corrosion on positive terminal) or maybe the terminal cable(s)?? Im very new to working on cars and any information is appreciated and retained.