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Toyota Rav 4 1997 .Check engine comes on .Codes are P0301,302,303,304116 . What to do.

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 .

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  • Toyota Master
  • 5,470 Answers

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

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  • Expert
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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

  • 178 Answers

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

  • 31 Answers

SOURCE: hesitates/stalls during acceleration

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

  • 141 Answers

SOURCE: Engine runs rough after about ten minutes /idles really low

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

  • 2 Answers

SOURCE: Very Rough Idle and sometimes cuts off while idling




sounds like bad Idle Air control valve Not Cheap


wl2ac485003.jpg

Posted on Feb 21, 2009

  • 150 Answers

SOURCE: 92 Honda Accord LX- idles rough when started up

sticking valves. the short run of the engine free's them enough to enable runnig

Posted on Aug 14, 2009

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2 Answers

My 2002 Toyota Avalon Idle above 1500 rpm when it's on natural how can i bring it down to 900 or 800 rpm thanks.


Run the engine, till you come to the average temperature, and stop the engine. Remove the negative battery wire & leave it for 1 minute & fix it back, to reset the ECU.
Clean the throttle body.

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I have a 2006 toyota Rav 4 and all the engine warning lights go on, lights reset and after a few days come on again. What can it be?


You need to start with a code. If it says an o2 sensor B1S2 4 cyl replace sensor 1 first. As it may be tricking it. If it is a P0420. Catalyst inefficiency. Clean injectors and add extra cleaner to a low tank of fuel and drive are high rpm's. And use better fuel. Go to a corner garage and check the codes. This takes about 10 seconds and should be free. If your garage charges. You can buy a code reader for about $50 -$80. Plug it in and it tells you the code

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Warning lights not going out


this a 1996 Toyota Hilux??????????
is RPM at 300? or 800,. 300 is bad idle and alt will fail there.
water level, ,
timing belt? (no way on any 96 !!!)
oil level in 1996, ? ahhh you think pressure is level , gotch.
what country is this. ive not seen all 50 country Hilux.s ever.
its not USA car. so?????

check engine RPM
if dash has RPM this is easy, 800 good, lower bad
cold engine RPM is about 1500 and drops to 800 hot.
is this car EFI or CARB, many cars not in USA are carb up to 2001.
to get best help. for all engine issues.
  1. Post your Country, is that so hard,. not one poster ever did.?
  2. Post engine type, most cars have 3 engine options,, land-cruisers 12 engines. world wide.
  3. List all engine related symptoms, misfire , bogging stalls, and engine shaking or low idle RPM or too high,
  4. check all fuse and report the status of the CEL lamp, key on CEL glows, and running stays off. if not insert the check jumper and read the flash codes, CEL on running means the ECU wants to tell you what and why tests fail.. listen to it or fail.

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1 Answer

Idles@2500 rpm until engine warms up


old post
all do, everyone. but. the devil really is in the details with EFI.
this IAC valve does that,
to speed it up warm up , put in a 195F thermostat.
this assumes 800 RPM is hot.
most of these engines, do this. new. bewlow.

1: cold start, for 3 to 15sec, 2500 rpm , worse in alaska.
2: then the above DASH pot closes and IAC takes over, at ~1200
3: then as engine heats the IAC closed inch by micro inch a
its now 100% closed and the ECU not controls idle hot.
using the modulated ISC,
there is a fast idle feature on this year, 950 to1000 rpm hot
with these turned on.
1. headlights hot.
2: defrost glass, rear.
3: heater fan on.
4: a/c on if opted.
other wise 800 is normal hot.

Jan 13, 2014 | 1989 Geo Tracker

1 Answer

I have a 2007 rav 4 the engine light will flash and the rav feels rough the engine or trans won't shift then it stops and works fine


The flashing check engine light means there is a serious problem with the performance of the engine. You need to get the computer scanned for trouble codes next.

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My 07 toyota rav 4's engine and four wheel drive


I doubt it.
Did you check the computers for trouble codes ?

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Possible IAC (idle air control valve) problem. Have it put on a scanner to be sure. O'rielly's and Auto Zone will do this for free. Hope I helped you, TJ

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An exhaust leak ahead of the O2 sensor can cause this. Air leaking in gives it an inaccurate reading. Check ahead of the sensors for telltale black sooty streaks at your exhaust joints and tighten any you find loose. You can temporarily cover any small holes with some muffler tape as well. Hope this helps.

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1 Answer

Oil light in 1999 Toyota camry comes on when idling.


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2 Answers

97 toyota rav 4 dies at accel.


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