92Lex

All that information is very credible...it's the same stuff I learned. The burn rate of fuel is fixed....premium is just a little harder to ignite. Thanks for taking the time to research that, that post was way better at explaining it than I was.

Are you confirming the voltage drop through a digital cap or are you using a multimeter?

Dead battery.

Okay.

Main antenna and sub? I hooked up an aftermarket headunit and there's only 1 plug for the antenna...both AM and FM work. What am I missing here?

If it's the antenna wire then howcome FM works but AM doesn't?

Bank 1- system lean? Contaminated MAF, low fuel pressure...maybe even a vacuum leak. O2S isn't the only reason for this code...there's NO direct monitor that tells you of a failed O2 sensor. Maybe once they develop OBD3 you'll see this but there isn't a monitor that tells you of a failed O2S as of right now. Are you trying to say that premium fuel somehow tricks the O2 sensor into thinking that the air/fuel ratio is richer? Or are you saying that premium fuel causes a vehicle to run richer? It doesn't matter what fuel you run...if your O2S is bad then it's bad. I'm sure if you drove another thousand or more miles with the regular fuel the computer would of thrown the same trouble code. (I was under the impression that RX's require premium unleaded...sorry about that one).

Nobody said anything about an EGR being clogged shut.

So all the FM stations work right? If your FM stations work and your AM doesn't then I have no idea what's wrong...sorry.

Take a picture of the housing...I *might be able to help

87 was the culprit of the "ping" because it caused the carbon build up. Exactly what sensor are you refering to? Was it carbon fouled? Is your RX designed to run on premium or regular?

At least you're learning as you go along.

What do you mean the AM stations only work sometimes? No reception? Is there a CD changer or only tape? Do you listen to tapes frequently? If you don't really care for CD's then there's no need to get a different HU unless it's not repairable...but it might be easier to just replace the headunit.

Well, some people swear by it. This is like one of those synthetic versus dino oil arguments...everyone has their own opinion about a certain product/service.

I agree with Barkat...take it to Toyota. If they find any areas that need attention just point it out to her and try to work the price.

Seems to be a 50/50 thing. I'm not going to say that using 87 will cause pinging in every vehicle...but how does premium mask any problems? Tell me if I'm wrong cause I'll throw out some of my schooling and I'll absorb the knowledge.

Hahah

No, I'm not being sarcastic. Those parts you chose will work but you could do better and go with OEM parts for about the same price. Try this: http://www.trademotion.com/partlocator/ind...808&catalogID=1

Sure.

Your best bet would be to stick with OEM parts.

That's sick!!! Haha. Can you pick me up some soup on aisle 4?

You don't have to remove it from the vehicle. Just hook up the pressure and return lines of the MotorVac and it cleans the engine using detergents/fuel. Cleans O2S, spark plugs, ports, valves, injector housings, cats & EGR. It's like $100 at most shops around here...well worth the money though.

1. Yes 2. I don't knnow about these wires...it's good to go OEM. 3. Distributor caps, distibutor rotors & thermostat. If money allows (or if needed) you might want to also replace these if they haven't already been done: Air filter, fuel filter, PCV valve & serpentine belt. You might want to clean the PS solenoid screen while you're at it.

SW, I'm sure you're right about that but I'm just saying vehicles using lower octane than they were designed to run on are likely to "ping"...I'm not saying every single vehicle will ping on 87 octane but it's not uncommon. mikey, are you refering to vehicles made to run on premium or made to run on regular unleaded? 87 octane burns faster than 91...the ECU can only !Removed! the timing to a certain point, if it's already retarding the timing all it can but the mixture is still "pre-ignited" because of the added heat, wouldn't you get pinging because of the extreme combustion temperature? I've seen vehicles come into the shop that fail for NOx, they've been running 87 octane in vehicles made to run on 91 octane. I'll tell ya, those vehicles usually ping under acceleration.

At Walmart it's labeled as TA028 or TA021...it's the exact same harness as the TA02. They should have a Scosche catalog there that you could use to cross reference.