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I'm having a hard time reaching the ground at the back of the engine head, it's pretty tight in there. Is there a better way to reach it? Should I remove the heater core valve in place? Will I damage anything doing so, like gaskets or seals? I drove the car this morning about 30-40 miles back...

I just got done checking the ECU for leaks and whatnot, not that I'm bragging, but being an Electronic Engineer, everything looks fine in there. No leaks, no corrosion, actually the ECU was still sealed air tight, and was pretty hard to pop open and everything inside looked brand spanking new...

Alright, so I tried working on the ground this afternoon, it was quite a tight fit, I didn't realize how close the rear part of the engine was to the firewall. I did find a couple of bolts to the engine head, but I cannot identify which one is the ground, due to lack of lighting, and the rear...

Ok, thank you for your help, I really appreciate it. If you could assist me further, I'd like to eliminate every other part that can cause these problems first before getting in to the ECU. Just wanna make sure that my car is still mechanically able. So far I've replaced these parts, all with...

Just a brief history of the car and myself; I bought it around 3 years ago, and has been my daily ever since. It was parked by the previous owner for roughly 3 years as well. I dealt with every common problem these cars have. First year I owned it, I fixed a lot of suspension problems, steering...

I don't have an oscilloscope. Is there another way to see? Btw, the codes 24 and 31 are back. And my factory alarm is going coocoo on me. There are times when I push the lock it will immediately unlock on its own and pushing the lock the second time wouldn't work anymore. I'd have to insert the...

It's 4 wire. It's brand new OEM Denso. Can you enlighten me on "scoping the voltage?"

Hi guys! Sorry to bump a dead thread... I'm a regular at CLub Lexus but no one can seem to help me with my problem. I went through the exact same thing the OP experienced. I have a '95 SC400 with 198xxx miles. I replaced my main o2 sensors about 6 months ago with the hopes to fix my gas...

Hi guys! Sorry to bump a dead thread... I'm a regular at CLub Lexus but no one can seem to help me with my problem. I went through the exact same thing the OP experienced. I have a '95 SC400 with 198xxx miles. I replaced my main o2 sensors about 6 months ago with the hopes to fix my gas mileage...