im184jcs92

I don't know if this would relate to the same post as http://us.lexusownersclub.com/forums/index...?showtopic=232&but let me explain to you my problem. I have a 1992 ES 300 with about 136K A Couple of issues with my car has come up and I think they are all related. 1) During ignition (start up) at ramdom times the engine would shake/throttle (what every you want to call it) and the rpm would fall below 500 rpm and the engine would die. 1b) Happens most freqently after driving long periods of time and then stopping for a while (between 30min to an hour) and then starting up again 2) Engine shakes and then dies when exiting freeway offramp when completing a stop. Also at ramdom times. - It can't be the fuel filter, transmission oil/filter, or the spark plugs since I changed them recently. - I took it to my mechanic who said that it has something to do with the "Idle Control Unit" that controls my RPM and if I replace it, it would cost about $300 since he claims the part can only come from the Lexus dealer. - He cleaned something out and now it doesn't happen as often but I do notice that it doesn't seem to have as much pick-up energy as before and that when I drive on freeway speeds (like around 70mph) the RPM barely reaches 3000 RPM when it use to reach 3500 RPM. My question is 1) what is this "Idle Control Unit"...is it same as the Idle Air Control Valve (IACV)? Where is it located at and how can I temporary fix it? 2) Will my car break down if I don't replace for the time being and wait until summer when I'll be on summer break from school 3) Is there a place I can get the part for less than $300 4) Should I be concerned with the low RPM for the time being? I don't want to get stranded on a nearly dead freeway on US. 101 since I have to travel a lot. 5) Does the car's computer chip have something to do with this? Please Help Thank you! :)

I say use whatever gas octane you either 1) can afford or 2) how much you're willing to pay. I fill up with rotating on Octane 87 and 89 gas just becuase I don't want to fork over $2.50 a gallon. Dang gas company and gas station owners trying to rob us hard working consumers. And as usual...I know this is going to hurt some people but.....[B]GAS IS GAS PEOPLE!! IT WILL RUN YOUR CAR EITHER WAY!! :D Remember: The faster you go, the more gas you burn, the more money you burn. So, ease up on the speed, ease up on the octane level and treat yourself to nice steak dinner with the money you save.