Question about 2004 Lexus ES 330

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Hesetate and shakes engine light on code po304

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Please refer:

Check condition of the following:

1) Spark plugs, leads and coils
2) Air filter
3) Fuel filter.

Posted on Nov 09, 2012


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Posted on Jan 02, 2017

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SOURCE: Change F to C for my lexus Es330 air conditioner

i dont think its possible was the car from canada? I have heard of but wasnt witness to when the battery was disconnected that the car went to farenheit

Posted on Aug 21, 2009

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SOURCE: Lexus 2004 Sedan. 3 lights on at the same time:

there are many different components to these systems that can cause the lights to come on. if you have the vehicle scanned by an experienced tech with the proper tools he will be able to pinpoint your problem and tell you what it will take to fix it. diagnostic fee is usually one hour of labor.

Posted on Oct 06, 2009

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SOURCE: how do i turn off the maintenanace light on my 2005 lexus es330?

watch this free video instructions on how to reset your maint reqd light if video dosent work go to

Posted on Oct 25, 2009

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SOURCE: 07 lexus rx 350 with check engine light code p0304

Hi, did you ever get an answer? I have the same issue. Thanks.

Posted on Apr 29, 2010

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SOURCE: how to turn off Check Engine light on 2004 Lexus

Sometimes the light will stay on for 100-500 miles depending on the fault code. You can disconnect the battery to reset it, but you will have to reset the radio and other memory such as seats mirrors.

Posted on Jul 01, 2010

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PO304--- Possible Bad Ignition Coil on cylinder #4

PO136-- O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)

Could be sensor or wiring or misfire or other items

You should have changed the front or upstream O2 sensors
on all your vehicles at 100,000 miles

The coil code may or may not be correct
You have to diagnose cylinder misfires

I would suggest a repair shop & they have to use a scan tool
in Mode #06 on a road trip of at least 20 miles, to check for
cylinder misfire counts or use an oscilloscope on a road test

If replacing the coil on #4 resolves the issue, it was just luck,
& luck only goes so far

I had a coil in June that no professional test equip found
I had to walk a new one one cyl at a time

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Hi my 2001 ford expedition code read po304 my neutral kicks in but does not move back when pushing only forward and my reverse kicks in but does not move and the over drive light is flashing and when in...

A code p0304 is a number 4 clyinder missing causing the rough run condition, last cylinder on the passenger side ,coil or spark plug the transmission problems and overdrive light on is a transmission problem.

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Hello i got a check engine light on on my 97

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Most likely ignition coils. Not all of them. What code do you get. PO304 as an example. Have a code reader or scanner plugged in next to your right knee under dash and give me the codes

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the dealer needs to find out the codes and from the codes they should know what the problem is, and then should manage to sort the problems from there,

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1996 dodge caravan 3.0

code P0304 is a cylinder missfire code and means that there is a problem with ignition to that cylinder check the spark plug and the spark plug wire

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