ysm79

Hi, I got this code p0330, hired a mechanic to get both knock sensor replaced (also the wire, and 3 gadgets). However, the check engine light still came back with same error code (I erased it twice with my check engine reader). What should I do next? Please help! P.S. Don't ask me why not to talk to the mechanic, he's a friend of mine, cheap but honest. he has no clue at all, didn't charge me anything so far.

Is the bank 2 easy to reach? I don't need to open the engine, correct? Urgently awaiting reply. Thanks.

Help. My crappy Lexus 2000 RX300 had the check engine on together with a symptom of unmoveable handle and break light failure. I had someone changed the break sensor, the check engine was still on. I then had it diagnosed with a scanner and found the coolant was low. I added coolant, the notorious check engine light was still on! Next I bought a scanner and got it today. Scanned. got 4 codes: P1135 P1130 pd, P1133 pd, P1135 pd. Basically, 3 codes: P1135, P1133 and P1130! Can anybody give some advises as where I shall start to fix the issues. I am a pretty handy man but have very little experience with cars. My plan is to dump the crap after I fix it. I want to throw in as minimum bucks as possible because I am so tired of the crap. I will go ahead to clear all codes and see which one will be back first. But if you guys can help conclude the "rear A/F ratio sensor" is bad, I can start fix it. Question: How harmful to the entire car or engine if I keep driving it for about 40 mile per day? I am asking this because this doesn't sound like a quick fix and I need time to order parts somewhere cheap. Thanks for any help!