Question about 2007 Toyota Yaris

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Make engine idle

Engine start but don't idle

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Check the automatic idle module for proper operation.

Posted on Nov 17, 2014

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  • Master
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Check Air filter and then the air intake path for breaks or blockage.

Posted on Nov 17, 2014

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Free lander rev counter intermittent and eng light on and off


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Idle too high and service engine light on, how do I adjust idle?


Don't listen to that other guy-there is no idle speed adjustment screw.If your idle speed is to high and you have a check engine light,you probably have a vaccum leak.Start it up and listen under the hood for a loud air-rushing sound.It's probably a broken rubber or plastic fitting,or maybe something just got disconnected by accident.

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1986 dodge ram 225ci slant six and a single barrel holley carb


Start with the idle needle screw first, the idle mixture screw. Seat it all the way in, first-don't overtighten and damage it, just seat it lightly, and back out two full turns. Run the engine and set the adjustment by ear to get your best lean idle: start turning the screw in (clockwise) 1/8 or 1/4 turn at a time till engine stumbles, dies, or runs rough. Keep the engine running, and turn screw out (counterclockwise) a little at a time till you hear the idle dropping. Now between those two settings is your best lean idle. Turn the screw in, a little at a time and wait for engine to respond, tiill you get the highest idle speed. Now set the other idle screw, curb idle, to the idle setting for your truck, probably about 700 rpm. You can move back and forth between the screws to get the best steady idle. Just don't over do it on the idle mixture screw.
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May 08, 2012 | Cars & Trucks

1 Answer

Rough engine idle


you don`t say if you have checked anything so start with the plugs for condition and age as well as plug gap.then the ignition wires they may need changing.the engine compression can affect idle and give the impression its alright at higher speeds.fuel injectors if they are dirty can cause rough idle and run okay at higher speeds.just somethings to check

Jan 11, 2012 | 2004 Pontiac Sunfire

1 Answer

Really rough engine idle at cold start up,, reving the engine seems to smooth it out,,,,


Some causes about rought idle could be:
- Valve adjustment
- Incorrect ignition timing,
- Vacuum leaks
- Bad ignition wires (Test w/ ohmmeter)
- Incorrect idle speed
- Cold Start Injector always "ON" (Revised injector time switch avail.)

A source of rough idle in EFI engines is air leaks or vacum leaks these leaks will upset the fuel mixture without triggering any codes. A bad oxigen sensor will also cause a rough idle, but you should see a code for it ( I think is number 5, but check it).

A good place to start would be an inspection of the spark plugs, plug wires, ignition timing, and idle speed. Next would be valve adjustment. Don't overlook the simple things.

Hope this helps, keep us updated and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa.

Nov 04, 2011 | 1997 Honda Accord

1 Answer

1993 mercury villager check engine on with code 32 and 34. repair manual says the code 32 doesn't bring the check engine light on but the 34 does. code 34 says problem with the egr valve solenoid or...


After awhile these idle screws don't have a lot of effect, the throttle body & injectors are also probably dirty. The 1.5 turns out from a soft seat is a starting point. Go another 1 to 1.5 turns out to find the sweet spot. Pour a can of Seafoam in with about 1/2 tank of gasoline. That will help clean the injectors & combustion chambers. Clean the throttle body with throttle body cleaner, make sure there is no carbon around the edges of the butterfly and where it seats.
The knocking on starts is most likely from worn bearings. It will knock until oil pressure builds up & is circulating through the journals. I hope this helps.

Sep 24, 2011 | 1993 Mercury Villager

1 Answer

03 ford explorer starts and dies


First, this "solution" assumes that the engine starts and runs OK, but will not idle once the key is returned to the RUN position.

A real common cause of that is the Idle Air Control Solenoid (IAC). To see if this is the problem, see if you can keep it running by stepping on the accelerator a little right when it is starting.

NOTE: you don't want to step on it before you start cranking the engine over or you will flood the engine. Also, step lightly, just enough to see if you can keep it "idling".

If you can keep the engine idling this way, then replace the IAC.

If this does not work, try unplugging the MAP Sensor and see if it will start and idle. If it continues to run (idle) with the MAP sensor unplugged, then replace the MAP sensor.

The next thing to suspect if none of the above works is the ignition switch. If it gets this far, post a comment to let me know and I'll post some instructions for testing the circuits for your ignition switch.

May 02, 2011 | Ford Explorer Cars & Trucks

1 Answer

If come to A light or A stop my engine want to stop I have to push on the gass if I don`t it will stop it`s ok is long I don`t STOP.1999 fordr explore 4 door xlt (ingine light is on)


does it start and run at idle in park.
it is probably either a vacuum leak or an idle air control valve,
if it misses and runs rough before it dies maybe a vacuum leak.
if it just idles too low, the iac valve

May 19, 2010 | 1999 Ford Explorer

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