Question about 1999 Lexus RX 300

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Where is the ignition coil on the engine? I cannot locate the spark plugs either it's a v6 1999 lexus rx300

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The back plugs are under the intake plenum. Tey can be changed without pulling the plenum but for a novice it may be easier to remove the plenum. The fronts are under the engine cover that says v-6...3000..v v t i, etc. Remove that cover and you will either see three coils or three wires. The plugs will be under those.

Posted on Oct 15, 2010


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Jun 18, 2015 | 2000 Lexus RX 300

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Mar 29, 2012 | 1999 Lexus RX 300

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I need to know where the spark plugs and distributer cap is located on my 1998 Lexus es300

Hello,the Lexus 3.0 litre engine has no distributor or cap.There is an individual ignition coil on top of each spark plug,all of which are located on top of the engine.There may be a removeable trim cover over the engine making these harder to see untill you remove it for access.

Sep 04, 2011 | 1998 Lexus ES 300

2 Answers


I just went thru a situation where I replaced all the 6 ignition coils and plugs along with 2 O2 sensors. The engine continued to throw codes and was doing a type of missing that I now understand is known as "fish-biting". I read a thread that this engine has an "oil pressure control valve" on each cylinder bank. I found them and pulled them out of the heads. I found that there's was to check these, but one of mine, the one nearest the front of the car, looked burned. I spent the $70 bucks. The fish-biting has been eliminated, and the car runs very smooth. Hope this helps.

Jan 10, 2011 | 1999 Lexus RX 300

2 Answers

Cylinders 1 and 4 are improperly firing on my 2000 lexus rx300

are cyl 1 and 4 fed off the same coil?if so the coil is faulty [common problem on all cars]Try changing coils around and see if the problem goes to the new position.

Nov 15, 2010 | 2000 Lexus RX 300

1 Answer

1999 lexus rx300 check engine light blinking - car vibrates at about 50 mph but if i tuen off overdrive it will stop - got error codes P0125 and P0306

Your 306 code means you have a misfire on cylender 6. That may be the cause of the po 125. Inspecdt the coil, spark plug wire, and spark plug on cylender 6. With the age of the car I would replace all 3 items. If you want know how to test all 3 I can tell you process of elimination is the way to do it. Do you know how to find cylender 6

Oct 15, 2010 | 1999 Lexus RX 300

1 Answer

Lexus 2002 RX300 - What is it when the Trac Off, VSC & Check Engine lights are on and the DTC code says cylynder 1 and 6 misfire

You could have a bad coil pack or a bad fuel injector. swap out the coil packs from the misfiring cylinders and put them in the cylinders that are known to be firing correctly to narrow it down to determine if it is the coil pack first. When is the last time you changed the spark plugs? Pull them out of the misfiring cylinders to check the condition of the plugs.

May 25, 2010 | 2002 Lexus RX 300

1 Answer

How to tune up the lexus rx300 can't locate the plugs

This is a lenghty job!! You would have to remove the plastic engine cover to locate the plugs (cover that has the lexus symbol). There are 3 coils(black squarish units) on the front head and another three in the rear head. You must remove these to access the sprakplugs. Front is very easy!! The rear is difficult, you would have to remove the intake(special tools are needed) to access the rear coils and sparkplugs. hopefully this helps

Jul 24, 2009 | 1999 Lexus RX 300

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