Question about 2004 Toyota 4Runner
Just swapped engine the secondhand engine is idling at1800rpms and wont drop down
Posted by Anonymous on
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Posted on Jan 02, 2017
1990 22re same problem surge when pedal was depressed thought it was booster or check valve still didnt fix it i even put a brand new booster on it just to make sure still no fix it finnally went away on its own for about a month now it does it just sitting at an idle with out the brake pedal depressed traced all vaccum lines no problem there and still have no clue
Posted on Feb 21, 2009
You have extra air leaking into the intake manifold that mimicks a throttle that is open further than it really is. Check for vacuum leaks.
Posted on Feb 28, 2009
The high idle speed at start up is normal. As the engine temperature increases, the engine idle should kick down automatically. Insofar as the emissions results, if there were a problem, the check engine light should be on. If it is, take the car to an autoparts store and have the fault codes read. Most parts stores will perform the scan for free. If the check engine light is not on, and the idle question was all you were worried about, you are good to go! Hope this helped and best wishes.
Posted on Jul 31, 2009
You might have a bad coil. Under a load the coil might preform well, but under no load, its weak causing a misfire...thus giving you a rough idle. I have had this problem on a few vehicle. Check plugs, wires, and distributor. Mike.
Posted on Sep 18, 2009
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