Question about Cars & Trucks
RPM's are jumping up and down while in idle...check engine light has been on and auto zone says it's a leak in the air intake hose...Car feels like it's going to stall while at stop
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Posted on Jan 02, 2017
NO U HAVE TO REMOVE THE IAC TO CLEAN.DO U KNOW WHET CODE THE LIGHT IS SETTING?
Posted on May 05, 2009
SOURCE: high idel
You may have a bad control valve or regulator. Did you adjust the idle properly?
1. Disconnect the connector on top
2. Adjust idle to around 650-700k rpm
3. Reconnect the electrical connection
After reconnecting, the idle should jump up around 700-750k rpm.
The idle screw is fail safe setting in case the ecu cannot set the idle. The rpm's set by the idle screw are supposed to be below the ecu/stock idle.
If this doesn't work, you may have a dirty or bad Idle Air Adjuster and/or Air Regulator. For information on cleaning that, you can refer to this page http://s95014253.onlinehome.us/63104/157335.html
You can test the IAA by supplying power to the plug with the car off. Listen for any clicks or humming. That will signify that it still may be working but is possibly stuck. The Air Regulator is for high idle for warming up your car. It has a bi-metal spring inside that rotates a disc closing off an airway to bring idle to normal after a couple minutes. If it dies it will stay open and give you permanent high idle. If it gets clogged usually no high idle for warm up.
You can remove it and peer through the end. If you see a thin sliver of light, it's open. Connect 12 volts + & -, wait a few minutes and see if it's now closed. If not, it's likely dead. It can be opened and cleaned if that's the issue.
Posted on Jun 27, 2009
Do you have the idle speed turned up to keep it from dying? Because it is high. Check engine light on? Have you checked for vacuum leaks at the gasket under the throttle body? How does the car run under acceleration? You might have a worn distributor shaft.
Posted on Jun 22, 2010
Testimonial: "Thank you for your tips and ideas you have gave me, One question, but before read my latest update. my car rpms hover around in between 1100 to 1500rpm at idle, but when I shift into drive it goes to a steady 1000rpm... is that good? if not, what are the correct specs. thanks again"
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