Normal Idle?
03-07-12, 11:05 PM
#16
Well Ive noticed this problem with my 2000 LS400. Im not sure if it is normal or not? It seems to idle kinda high between 850 - almost 1000 when it park. And then it seems to idle rather low in drive ranging from 200 - 400. So you guys know how to adjust my idle speed? or what could be the cause of this?
Here are some pictures.
In park
In gear
Here are some pictures.
In park
In gear
03-13-12, 05:55 PM
#17
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High Idle on LS400 1995
I've recently changed the air filter and it seemed to help the high idle temporarily. Took off the battery cable but didn't depress the brake, left off the cable for an hour and when I fired up the car the high Idle was back. Funny how after almost exactly 10 minuted the car idles fine and runs like a top. $4.00 + gas makes it hard for me to let her sit there and idle @1175 chugging high grade fuel. Any other suggestions on the high idle troubleshoot?
03-14-12, 07:21 AM
#18
May just be a coincidence, but that is about the amount of time it takes for the engine/cats to reach the proper temps for the ECU to go into closed loop, where it takes over all the idle and emission controls. Prior to that, the engine runs on default settings. It may be possible that your throttle plate is mechanically being held slightly open, or as said earlier, you have a vacuum leak.
03-19-12, 07:29 PM
#21
Pole Position
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Generally you unscrew the maf element from the housing and spray it with MAF cleaner, let dry in sun, re install plug in, done. I'm sure there is a writeup somewhere on here. If not do a google search because I know every other car forum I ever visited did.
It's real real easy to do IMO. Would be real difficult to mess up just be careful and don't touch the element.
It's real real easy to do IMO. Would be real difficult to mess up just be careful and don't touch the element.
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