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Toyota/Lexus uses a direct mount ignition coil for each spark plug so you have six of them on your engine. If you have a bad coil the engine will run rough, the vehicle will shake, and your check engine light may light. The trick is to find which coil is bad. You may be able to get a free scan at a local auto parts store(AutoZone does it, maybe others) that should tell you which cylinder is misfiring. The cylinders are numbered like this as you look at the front of the vehicle 1 3 5
2 4 6
2,4 and 6 are easy to change since they are in front. Remove the vanity engine cover by unscrewing the L emblem on top of the engine and remove 3 allen (4 mm or 5/32) screws at the top front of the cover. You can then see the 3 front coils. Disconnect the wiring connector by pushing on the clip that holds it in place and wiggle and pull, don't pull on the wires though. Remove the 10 mm bolt that holds the coil down and then twist and pull the coil off the spark plug. I have seen cracks and arc tracks on the shaft of a bad coil but just because there are cracks doesn't mean it's bad. I have switched a suspected bad coil to a different cylinder and rescanned to verify that the code changed to that cylinder. 1,3 and 5 are much more difficult to get to but can be done by removing a couple small parts to allow
access. There is a good procedure on Lexus club forums called DIY Spark Plugs (if you have the patience). Try searching on Google for it. The individual coils run $80- 100 at stores, slightly cheaper online. On Amazon I saw a set of 6 for around $225.
What else can I help you with?
How do you replace the spark plugs on 1999 rx300 Lexus?
To replace the spark plugs on a 1999 Lexus RX300, first ensure the engine is cool and disconnect the negative battery terminal. Remove the engine cover if necessary, then carefully detach the ignition coil connectors and unscrew the coils to access the spark plugs. Using a spark plug socket and ratchet, unscrew the old plugs, checking for any debris in the cylinder head, and then install the new plugs, tightening them to the manufacturer’s specifications. Reassemble the ignition coils and connectors, reattach the engine cover, and reconnect the battery terminal.
How do you fix obd code p0301 on Lexus rx300?
OBD code P0301 indicates a misfire in cylinder 1 of your Lexus RX300. To fix this issue, start by inspecting the spark plug and ignition coil for signs of wear or damage; replace them if necessary. Additionally, check for vacuum leaks, fuel injector problems, or compression issues in that cylinder. If these basic checks don’t resolve the issue, consider a more thorough diagnostic to identify underlying problems.
How to replace ignition coil in a Ford Focus?
http://www.ehow.com/how_4509339_replace-ignition-coil-pack-ford.html
How to replace 1996 Buick Skylark Ignition?
Ignition what? Switch? Coil?
How do you fix P0352 ignition coil B primary secondary circuit malfunction?
Replace the ignition coil(s).
When should you replace your ignition coil?
Replace it only if it becomes defective.
How do you install ignition coil on 1999 Lexus rx 300?
Each spark plug has it's own ignition coil, they are on the spark plug itself. Unplug the ignition coil connector, remove the bolt holding the coil in place, pull the coil off of the spark plug and out of the valve cover. Install the new coil.
How many ignition coils does your 2003 Lexus IS300 have?
The 2003 Lexus IS300 uses a 2JZ-GE inline-6 Toyota engine, and has 6 ignition coils (coil on plug).
How do you replace ignition coil on 99 Jeep Grand Cherokee?
there is a coil on each plug
How do you change an ignition coil on a 97 sonoma?
pull the two bolts buy new or used ignition coil the replace the ignition coil is on th left side of motor right by the tbi
How hard is it to replace heater coil 1993 Lexus es300?
Very hard.
Why is there no spark in a 1991 Jeep Cherokee?
Replace the ignition coil.
