pisque3 Posted November 24, 2005 Share Posted November 24, 2005 My 1998 ES300 has a very high idle. I had the throttle body cleaned and the TPS replaced but the rpm still is around 1500 on the rpm gauge. Someone told me it probably is the Idle Air Control Valve but I don't know where it is located. Please help. Quote Link to comment Share on other sites More sharing options...
Lexusfreak Posted November 24, 2005 Share Posted November 24, 2005 My 1998 ES300 has a very high idle. I had the throttle body cleaned and the TPS replaced but the rpm still is around 1500 on the rpm gauge. Someone told me it probably is the Idle Air Control Valve but I don't know where it is located. Please help. ← Is this when the car is already warmed up to operating temperature? When was the last time you had a major tune up? But yes, sounds like the IACV is a possibility. B) Welcome to the club btw! ;) Quote Link to comment Share on other sites More sharing options...
pisque3 Posted November 24, 2005 Author Share Posted November 24, 2005 My 1998 ES300 has a very high idle. I had the throttle body cleaned and the TPS replaced but the rpm still is around 1500 on the rpm gauge. Someone told me it probably is the Idle Air Control Valve but I don't know where it is located. Please help. ← Is this when the car is already warmed up to operating temperature? When was the last time you had a major tune up? But yes, sounds like the IACV is a possibility. B) Welcome to the club btw! ;) ← Yes the problem is there when the car is warmed up to operating temperature. I had the spark plugs, ignition wires and air filter changed less than 500 miles ago. Please tell me the location of the IACV Quote Link to comment Share on other sites More sharing options...
ford212.809 Posted November 24, 2005 Share Posted November 24, 2005 Remove the throttle body - there it is !! ;) Quote Link to comment Share on other sites More sharing options...
Toysrme Posted November 25, 2005 Share Posted November 25, 2005 IAC is always a good thing to clean. After that check your coolant temp sensor. The older they get, the colder they read. The colder they read, the more rpm @ idle & fuel they spray. Quote Link to comment Share on other sites More sharing options...
OceanView Posted August 11, 2007 Share Posted August 11, 2007 My 1998 ES300 has a very high idle. I had the throttle body cleaned and the TPS replaced but the rpm still is around 1500 on the rpm gauge. Someone told me it probably is the Idle Air Control Valve but I don't know where it is located. Please help. I am having the same problem now. I just took off the IACV and cleaned it, put it back together and the car idles higher than normal. Even after the engine warms up, it stays that way. Anyone know what is going on? Quote Link to comment Share on other sites More sharing options...
JokeDog Posted August 14, 2007 Share Posted August 14, 2007 Hi, I'm a new 98 es300 owner, what is considered to be a "normal rpm" at startup? I didn't pay any attention to it, but when I checked in the dealership before driving out, it was between 1 - 1.5k. My old 95 corolla doesn't even have a tachometer. Quote Link to comment Share on other sites More sharing options...
Toysrme Posted August 14, 2007 Share Posted August 14, 2007 Hi, I'm a new 98 es300 owner, what is considered to be a "normal rpm" at startup? I didn't pay any attention to it, but when I checked in the dealership before driving out, it was between 1 - 1.5k. My old 95 corolla doesn't even have a tachometer. *in general* 450rpm cranking a toy v6 1800-2000rpm initial startup throttle blip to raise oil pressure 1200-1500rpm cold idle 750rpm warm idle no powersteering no fan, no A/C on an automatic transmission 800-1200rpm with the above active. 800-1200rpm with the brakes applied depending on the load created by the vacuum assist. Quote Link to comment Share on other sites More sharing options...
JokeDog Posted August 15, 2007 Share Posted August 15, 2007 Thanks Toy! Quote Link to comment Share on other sites More sharing options...
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