Question about Toyota Cars & Trucks
When starting rpm may be 800 to1000 then goes up to1800 to 2000. Pressing down the accelerator pedal doesn't bring down rpm , after a couple of minutes rpm drop down to 800 to 1000. At times when coming to stop lights and idling rpm drop to 400 to 600 rpm causing to rough idle and stall. Having to keep cranking the ignition key to finally start. Replace plugs , wires , distributor cap and rotor .
The engine coolant temperature is high. Your other Codes are for missing cylinders on cylinder 1,2,3,and 4. Get the Codes cleared and start over. Changing the plugs and wires,etc could have generated the missing cylinder Codes.
Autozone,Advance, and Oreilys will scan for free.
Check your engine for an IDLE SPEED CONTROL SOLENOID, which may be in the intake. Or a fuel pressure regulator.
A lot of times people work on the spark side and forget the fuel injectors. They can cause a miss.
Posted on Nov 03, 2012
Erratic idle speed is most often caused by an air leak. by this i mean excess air is leaking into intake system and your sensors are trying to compensate for it. take it somewhere and get the codes checked. they will tell you for sure.
Posted on Apr 13, 2014
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Posted on Jan 02, 2017
SOURCE: rough idle stalls at low rpm's
hello first check your idle with the car running foot on brake see were your rpm reading is if your below 500rpm check your label underhood for your curb idle setting second see if theres a adjustment screw you can increase were your gas cable lever rest against your set screw underhood if you feel confident enough remove your iac motor idle air control valve if the bore were the end of the pintle extracts out to close has varnish builup our carbon it will stick creating vacuum leak type senario causing stalling rough idle sometimes even no start conditions good luck
Posted on Sep 18, 2008
i would check fuel supply, volume adn pressure, i wold also look at the MAF sensor hot wire to see if it has a little chia pet growing on it.
Posted on Dec 13, 2008
Just trowing some suggestions out there, but, I would check the idle air control valve (solenoid) or the throttle position sensor. If they check out then my last guess would be the map sensor or the vaccuum to the map sensor. Hope I was able to help. Best wishes.
Posted on Jan 17, 2009
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