Idle issues

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tim_lemmy

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Dec 13, 2007

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Jan 31, 2008

#1

• Jan 31, 2008

• #1

My 93 LX is acting strange It idles at about 1200rpm when i first crank the car and once it's had time to warm up if I stop somewhere and let it idle it runs anywhere from 500-800rpm. Any thoughts?

 

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SILENTCARL

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Feb 15, 2007

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Jan 31, 2008

#2

• Jan 31, 2008

• #2

Once it is warmed up, turn off the car. Then unplug the IAC (Idle Air Control) valve on the throttle body. Start it back up, and adjust the idle to 850-1050 rpms (or your desired idle) with the adjustment screw. Then Shut the car off, and plug the IAC back in and drive. That should do it.

If not post back so we can try to help you some more.

 

Stinger

Founding Member

Jul 7, 2001

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Basehor (Kansas City), KS

Jan 31, 2008

#3

• Jan 31, 2008

• #3

Leave it alone, that's how it is supposed to work...

 

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tim_lemmy

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Dec 13, 2007

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Feb 1, 2008

#4

• Feb 1, 2008

• #4

So my car is supposed to idle low enough that it sputters? I don't think so. no car that i'm aware of is supposed to do that

 

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SILENTCARL

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Feb 15, 2007

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Feb 1, 2008

#5

• Feb 1, 2008

• #5

Just raise the idle like I mentioned to get away from the too low idle. Stinger is right, it should start off at 1500 or so, and idle down to 800. But 500 rpm and hunting idle makes me think your base idle is set too low.

 

Stinger

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Basehor (Kansas City), KS

Feb 2, 2008

#6

• Feb 2, 2008

• #6

tim_lemmy said:

So my car is supposed to idle low enough that it sputters? I don't think so. no car that i'm aware of is supposed to do that

Click to expand...

Did you say it sputters in your first post? No. You just said it idles down to 500-800 (which implies you don't know how low for sure). Don't be a smartass.

 

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tim_lemmy

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Dec 13, 2007

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Feb 5, 2008

#7

• Feb 5, 2008

• #7

Sorry. I wasn't trying to be a smartass. I just ass/u/me d that any car that idled at 500 rpm would sputter and die.

 

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SILENTCARL

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Feb 15, 2007

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Feb 5, 2008

#8

• Feb 5, 2008

• #8

Did you / have you tried just setting your base idle yet? If it doesn't work I have a few more suggestions...

 

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tim_lemmy

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Dec 13, 2007

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Feb 6, 2008

#9

• Feb 6, 2008

• #9

I haven't had a chance I've been teaching karate at night because the main instructor is on vacation I plan on doing it this Friday

 

Stinger

Founding Member

Jul 7, 2001

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Basehor (Kansas City), KS

Feb 7, 2008

#10

• Feb 7, 2008

• #10

tim_lemmy said:

Sorry. I wasn't trying to be a smartass. I just ass/u/me d that any car that idled at 500 rpm would sputter and die.

Click to expand...

Fair enough. For future information, many 4 cylinder cars idle between 500 and 600rpm.

 

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tim_lemmy

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Dec 13, 2007

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Feb 11, 2008

#11

• Feb 11, 2008

• #11

the car's running fine now but now that i've adjusted the idle the check engine light is coming on

 

Stinger

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Basehor (Kansas City), KS

Feb 12, 2008

#12

• Feb 12, 2008

• #12

Scan for codes...

 

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Jimmy2Times

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Jun 9, 2003

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Atlanta, GA

Feb 18, 2008

#13

• Feb 18, 2008

• #13

tim_lemmy said:

the car's running fine now but now that i've adjusted the idle the check engine light is coming on

Click to expand...

If you changed the idle speed by turning the throttle set screw but didn't adjust your throttle position sensor (TPS), that's probably why your engine light is coming on. You need to adjust the sensor to return a voltage between 0.8V and 1.0V with the throttle closed.

If you aren't familiar with this procedure I'm sure you can find a write-up on here... if not let us know and I can give you the short version.

 

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SILENTCARL

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Feb 15, 2007

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Feb 19, 2008

#14

• Feb 19, 2008

• #14

Jimmy2Times said:

If you changed the idle speed by turning the throttle set screw but didn't adjust your throttle position sensor (TPS), that's probably why your engine light is coming on. You need to adjust the sensor to return a voltage between 0.8V and 1.0V with the throttle closed.

If you aren't familiar with this procedure I'm sure you can find a write-up on here... if not let us know and I can give you the short version.

Click to expand...

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