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Saturday, August 18th, 2012 AT 5:30 PM
RMONET2012
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How do I check the idle speed?
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KHLOW2008
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The one I have circled in red. You can try inserting a cardboard in between screw and stopper to test if it improves.
To check idle speed, note the position of the tachometer in dash.
To check idle speed, note the position of the tachometer in dash.
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-1
Saturday, August 18th, 2012 AT 5:45 PM
RMONET2012
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I'll take a look at it. Is there any other way to test the IAC counts without using a 'scan' tester?
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Saturday, August 18th, 2012 AT 6:02 PM
KHLOW2008
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No, there is no other way but you need not worry about it for now.
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Saturday, August 18th, 2012 AT 6:12 PM
RMONET2012
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What kind of test meter would you recommend?
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Saturday, August 18th, 2012 AT 7:05 PM
KHLOW2008
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You need one that is compatible with your vehicle and are rather pricey for those that can be used to perform the task required so I would say it is not really feasible unless you want to go full time into being a mechanic.
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Saturday, August 18th, 2012 AT 7:10 PM
RMONET2012
- MEMBER
- 46 POSTS
I cleaned the throttle body and IAC again. I started the car,
left it in Park, and ran it for about 15 minutes, while gradually
giving it more gas.
It stalled again, same as before. Once warmed up it will crank and
start, but it will not stay on.
Q - How do I check idle speed and position of the tachometer?
What exactly am I looking for?
I have very limited knowledge in car mechanics, so I need details.
Thank you.
left it in Park, and ran it for about 15 minutes, while gradually
giving it more gas.
It stalled again, same as before. Once warmed up it will crank and
start, but it will not stay on.
Q - How do I check idle speed and position of the tachometer?
What exactly am I looking for?
I have very limited knowledge in car mechanics, so I need details.
Thank you.
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Monday, August 20th, 2012 AT 5:33 AM
KHLOW2008
- MECHANIC
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Tachometer is the gauge in dash showing 1, 2, 3, 4 and has the word rpm on it, next to speedometer.
It should be 3/4 between 0 and 1.
It should be 3/4 between 0 and 1.
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Monday, August 20th, 2012 AT 7:36 AM
RMONET2012
- MEMBER
- 46 POSTS
What did you mean by:
"Observe Idle Air Control (IAC) minimum 10-20) counts."
Q - The is the significance of a 'count' and what does it tell me?
"You can try inserting a cardboard in between screw and stopper to test if it improves."
Q - What will the cardboard do and how thick does it need to be?
"On the tachometer, it should be 3/4 between 0 and 1."
Q - What if it's too high or too low; what does it mean?
Q - What is the normal range for the idle on the Chevy Corsica?
Thanks
"Observe Idle Air Control (IAC) minimum 10-20) counts."
Q - The is the significance of a 'count' and what does it tell me?
"You can try inserting a cardboard in between screw and stopper to test if it improves."
Q - What will the cardboard do and how thick does it need to be?
"On the tachometer, it should be 3/4 between 0 and 1."
Q - What if it's too high or too low; what does it mean?
Q - What is the normal range for the idle on the Chevy Corsica?
Thanks
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Monday, August 20th, 2012 AT 3:17 PM
KHLOW2008
- MECHANIC
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The count is for the scan tool. If the number is out of specs, the idling would be either too high or too low.
Any thickness of cardboard would do. Tht is for opening the throttle, as if you had adjusted the screw.
If it is lower than 700 rpm the engine might stall. If it is high, you would have higher fuel consumption and trmight jerk hard when shifting from P or N to R or D.
Most vehicles have idling between 700 to 800 rpm when idling at operating temperature.
Any thickness of cardboard would do. Tht is for opening the throttle, as if you had adjusted the screw.
If it is lower than 700 rpm the engine might stall. If it is high, you would have higher fuel consumption and trmight jerk hard when shifting from P or N to R or D.
Most vehicles have idling between 700 to 800 rpm when idling at operating temperature.
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Monday, August 20th, 2012 AT 3:52 PM
KHLOW2008
- MECHANIC
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https://www.2carpros.com/section/how-does-it-work
Check the link for more information.
Check the link for more information.
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Monday, August 20th, 2012 AT 3:56 PM
RMONET2012
- MEMBER
- 46 POSTS
I tried the cardboard and ran the car for a 1/2 hour, while gently
accelerating the engine.
The tachometer (RPM x 1000) never dropped or climbed past 1 (1000).
The car eventually stalled after I removed the cardboard. It seems to be having trouble recovering after more gas is applied.
Does this make sense to you?
Q - What kind of tool is needed to make idle adjustments?
accelerating the engine.
The tachometer (RPM x 1000) never dropped or climbed past 1 (1000).
The car eventually stalled after I removed the cardboard. It seems to be having trouble recovering after more gas is applied.
Does this make sense to you?
Q - What kind of tool is needed to make idle adjustments?
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Monday, August 20th, 2012 AT 6:17 PM
KHLOW2008
- MECHANIC
- 41,814 POSTS
That indicates the idling is possibly too low.
What you need to do is to extend the screw out slightly. The cardboard is to act as if the screw is extended.
A screw driver would be sufficient but at rear of the adjusting position, I see there ia a valve that is restricting you from adjusting. You would need to remove that first.
What you need to do is to extend the screw out slightly. The cardboard is to act as if the screw is extended.
A screw driver would be sufficient but at rear of the adjusting position, I see there ia a valve that is restricting you from adjusting. You would need to remove that first.
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Monday, August 20th, 2012 AT 6:35 PM
RMONET2012
- MEMBER
- 46 POSTS
From another web site I read:
'You shouldn't have to adjust the screw; it's pre-set at the factory.
The computer controls the idle speed, that's why the idle screw is
sealed.
Is that true?
'You shouldn't have to adjust the screw; it's pre-set at the factory.
The computer controls the idle speed, that's why the idle screw is
sealed.
Is that true?
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Monday, August 20th, 2012 AT 7:05 PM
KHLOW2008
- MECHANIC
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Yes, that is true. Under norml circumstances you need not adjust it but you are having a problem now.
Linkages and wearof related parts can cause the air flow to go uot of specs. That is the reason the scan tool calibration is required.
If you don't want to try adjusting, then you would have to replace it.
Linkages and wearof related parts can cause the air flow to go uot of specs. That is the reason the scan tool calibration is required.
If you don't want to try adjusting, then you would have to replace it.
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Monday, August 20th, 2012 AT 7:27 PM
RMONET2012
- MEMBER
- 46 POSTS
I was working on the car while it on and I notice 2 things
1. The coolant fan was not turning on
2. The temp gauge was climbing past normal levels.
There is plenty of coolant and there are no leaks I can see.
Any thoughts?
1. The coolant fan was not turning on
2. The temp gauge was climbing past normal levels.
There is plenty of coolant and there are no leaks I can see.
Any thoughts?
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Tuesday, August 21st, 2012 AT 4:04 PM
KHLOW2008
- MECHANIC
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If the fans do not turn on when they are supposed to, it means a fault with the cooling fan control system. Does turning the A/C on makes any difference?
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Tuesday, August 21st, 2012 AT 4:19 PM
RMONET2012
- MEMBER
- 46 POSTS
My A/C does not work; never has since I got the car.
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Tuesday, August 21st, 2012 AT 4:20 PM
KHLOW2008
- MECHANIC
- 41,814 POSTS
Here is the cooling fan schematic. What you need to do is to test if the fan motor is working. Locate the fan relay, unplug it and test terminal for battery voltage. If battery voltage is available, use a fused jumper wire to bridge it with terminal E. If fan turns on, the motor is good and so is the Fusible link.
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Tuesday, August 21st, 2012 AT 5:54 PM
RMONET2012
- MEMBER
- 46 POSTS
Fan is OK. Another thing I notice - the car stalls when I give it gas even when it's cold.
Any thoughts?
Any thoughts?
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Thursday, August 30th, 2012 AT 6:13 PM
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