95 Idle high when cold?
02-12-08, 10:28 PM
#16
Here Is A Update On Our Lexus When I Had Have My Valves Ajusted The Tech Told Me About A Problem We All Might Have With The Old Lexus With High Mileage. It Was About The Carbon That Gets Into Our Throttle Body And Can Almost Close Of The Air Going Into The Engine. On Mine He Had To Chip It Sand It And Finally It All Came Off. He Said This Is A Problem With All The Fuel Injection Cars So If Your Lexus Seems Sluggish Check The Throttle Body For Carbon. Valve Ajustments Are Rare On The Lexus Motor Mine Was An Exception It Made Noise And 1 Or The Lifter Buckets Was Giving Problems. Cost $895.00 Ouch But The Car Now Tons Of Power Which I Didn't Have For Years. HAS ANY ONE HAD THE SAME PROBLEM AND IT WAS CARBON IN THE THROTTLE BODY.
02-12-08, 10:35 PM
#17
On topic: It seems this is common, but still doesn't mean it is in 'proper intended function' Or in other words maybe alot of these older Lexus's simply have yet another common problem. Though a high idle is not damaging the engine, if anything it is helping everything get lubricated on a cold day. -- Not top priority,.. now in ice as was mentioned.. I can see the annoyance. Luckily down south I don't have to deal with that but once every few years.
To the quote:
I've heard the opposite. I have heard that it is best to let the engine idle for a minute when you first start it after it has set for the night/a day, or longer. So the engine becomes lubricated and warms up before putting any major stress on it. Why would it be bad to allow an engine to idle?
To the quote:
I've heard the opposite. I have heard that it is best to let the engine idle for a minute when you first start it after it has set for the night/a day, or longer. So the engine becomes lubricated and warms up before putting any major stress on it. Why would it be bad to allow an engine to idle?
02-13-08, 02:46 PM
#18
Also they are among one of the first items in a series of sensors and whatnot before the air goes into the Intake.
Generally it is something like Air filter -- piping -- MAS/F -- TB -- Piping (or not) (maybe some a sqaure block with coolant running through it to quickly cool the air, depends on car) then into the Intake manifold.
I only mention this, because carbon buildup generally happens *after* that point.
Anyone care to comment on why carbon deposits would form in a damaging (major) fashion in the Thottle body ? Besides the carbon in the air, the air shouldn't be that heated to form large deposits (a little yes, but not alot) --
Does the intake back-flow into the TB?
Thanks,
10-04-16, 04:13 AM
#19
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