crazy idle in my hatch CX
11-18-2002, 10:12 AM
#1
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crazy idle in my hatch CX
its a 97 hatch and its running great still, but while my car is in idle it jumps up to a higher idle then drops back down. does anybody have an idea what i could do. its a killer with my exhaust!!!
11-18-2002, 10:55 AM
#2
O.G. SON!
Re: crazy idle in my hatch CX
Originally posted by huviduc
its a 97 hatch and its running great still, but while my car is in idle it jumps up to a higher idle then drops back down. does anybody have an idea what i could do. its a killer with my exhaust!!!
its a 97 hatch and its running great still, but while my car is in idle it jumps up to a higher idle then drops back down. does anybody have an idea what i could do. its a killer with my exhaust!!!
11-18-2002, 11:13 AM
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ur iacv or fast idle soleniod could be goin out or u have a vacumn leak somewhere. check all ur vacumn lines and did u ever take off ur tb or intake manifold, cuz if those r not torque down correctly, u can have air leaks there too causin weird idle. i know cuz my im is still loose and i havent fix it yet. 
late
late
11-18-2002, 12:36 PM
#6
のんびり～(´ε｀)
Originally posted by inspyral
The IACV increases idle speed when the engine is cold in order to warm it up faster. The idle speed should be constant around 1000-1200. If it's fluctuating, then there is something wrong. Usually, a fluctuating idle is cause by one or all of the following:
1) vac leak
2) air in your cooling system
3) bad IACV
If you're sure you don't have a vac leak, then I would wager you either have air in your cooling system, which throws off the IACV(the IACV relies on coolant running thru it in order to determine how fast to idle the engine) which could cause a fluctating idle. To bleed any air that m ay be in your cooling system, you need to open the radiator cap, and then put it back on loosely. Then, start the car, and let it idle until it completely warms up. During this time, you should have the heater blasting full-hot in order to circulate out any air that may be trapped in the heater core. Once the car is warmed up(radiator fan comes on at least twice), shut it off and check the coolant level in the radiator. If it went down, fill it up to the top and repeat the process. When you're done, put the radiator ca back on tightly. If this doesn't solve the fluctuating idle problem, then your IACV is probably toast.
The IACV increases idle speed when the engine is cold in order to warm it up faster. The idle speed should be constant around 1000-1200. If it's fluctuating, then there is something wrong. Usually, a fluctuating idle is cause by one or all of the following:
1) vac leak
2) air in your cooling system
3) bad IACV
If you're sure you don't have a vac leak, then I would wager you either have air in your cooling system, which throws off the IACV(the IACV relies on coolant running thru it in order to determine how fast to idle the engine) which could cause a fluctating idle. To bleed any air that m ay be in your cooling system, you need to open the radiator cap, and then put it back on loosely. Then, start the car, and let it idle until it completely warms up. During this time, you should have the heater blasting full-hot in order to circulate out any air that may be trapped in the heater core. Once the car is warmed up(radiator fan comes on at least twice), shut it off and check the coolant level in the radiator. If it went down, fill it up to the top and repeat the process. When you're done, put the radiator ca back on tightly. If this doesn't solve the fluctuating idle problem, then your IACV is probably toast.
11-18-2002, 01:18 PM
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ok thanks for the info im up for more info if somones believes different but u guys are a great help if i need to fix any of this is it going to cost alot of cash????