idle question again

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Old 01-27-2004 | 12:12 PM
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idle question again

Ok wassssssup all my a-cl peoples!

I still want to know why my car idles at 1,500rpm all the time WHEN I START IT UP. Day or night and if i havent been in the car for lets say 1 hr it idles at 1,500rpm then 5 min later it goes down to 750rpm. If i just drop it in reverse it will go down to 750 and stays at 750 whenever im stopped. But why is the car always idling soo high when i start it? My friends car doesn't seem to do this...And usually in the morning ill start it up and go back inside and grab my stuff and then when I go to drive the car its at 750rpm, but Is it bad if I drop it into reverse from 1,500? I have done it a couple times when i was in a rush for class and it seems to kinda SLAM down for a second. thankz in advance
Old 01-27-2004 | 12:19 PM
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That is the way the engine warms itself up fast. Though i can't see why this would be happening in florida to your car. Could be a bad thermo
Old 01-27-2004 | 12:25 PM
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thats like the choke its just to warm up mine does it all year round i live in ct
Old 01-27-2004 | 12:42 PM
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Tap on the gas a couple of times and see if it goes down....
Old 01-27-2004 | 12:57 PM
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Ya when I rev up the car to about 2500 rpm it goes down a tad bit faster but still takes a good 4-5min to go down to normal idle at any time of the day even when its 80 degrees out and even like 30 min after i drove it ...
Old 01-27-2004 | 01:48 PM
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Most cars idle high then come down its nothing to worry about.
Old 01-27-2004 | 07:12 PM
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my car idles at about 1500 in the mornings.. and when the temp gauge goes above the Cold line.. the RPM's usually drops down to 1000, and then 750
Old 01-28-2004 | 10:15 AM
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Originally posted by r0dxx
Ya when I rev up the car to about 2500 rpm it goes down a tad bit faster but still takes a good 4-5min to go down to normal idle at any time of the day even when its 80 degrees out and even like 30 min after i drove it ...
Just checking......Have you cleaned your throttle body lately? Chck that and the cable too.
Old 08-19-2004 | 10:17 PM
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Sorry bringing my own thread back from the dead...

I have gotten my thermostat replaced but my car still idles at 1,500 rpm all day long (when I start the car up). And its really annoying cause usually i wait like 3-4 minutes until it hits 750 rpm. Anyone know what could be my problem? Should I even let it go down to 750 or just drop it in reverse?

BTW how do i clean my throttle body? And what cable should i check!?
Old 08-19-2004 | 10:19 PM
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Also does anyone elses car idle at 1,500rpm when you start it up for a couple minutes?
Old 08-20-2004 | 12:31 AM
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i noticed that when i do oil change... if i use synthetic oil.. my car idles super super low... (i just realized that) when i used standard 10W-30 engine oil.. it idled at 1500 for about 10 seconds.. then drops down to 1100 for about 1-2 min.. then drops to 900 for about 1 min.. then stays around 750...

but.. as i said before.. after i switched to synthetic.. it idels at around 1000 when i start it up.. and it drops to about 500..

and on hot days.. when i try to start my car up.. it idels around 300.. (odd...)
Old 08-20-2004 | 12:47 AM
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rodxx- i share the same problem
Old 08-20-2004 | 01:17 AM
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I live in florida and my car is at 1500 at start up then it drops down after a few min, it has done it since i first got the car. i dont think its a problem and it didnt change any when i did a seafoam cleaning. I wouldnt worry about it.
Old 08-20-2004 | 11:23 AM
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Is this a proven fact? Synthetic oil idles lower? why?
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