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- 3.5L V6 1
2008
If your 2008 Honda Ridgeline is misfiring, you've come to the right place for valuable information and ignition coils that will help your issue. First things first, we want to get out of the way is that the J35A9 3.5L V6 used in the 2006, 2007, and 2008 Honda Ridgeline had issues with the piston rings on cylinder number 4. This will cause a VTM-4 light and a P0304 misfire code. If you are here because of a P0304 misfire code, we want to stop you right now and tell you to get cylinder #4 compression tested. While we want to make money on our products, our first mission is to save our customers money and time with valuable information so they won't be trying to solve the problem by "throwing parts" at it, then realizing that they wasted money on something that was never faulty in the first place. If the compression check tests out fine, then it could be an ignition coil problem. You can keep reading below, and then continue on to find out how much you can save on this type of repair.
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2008 Honda Ridgeline Ignition Coil on Plugs
The 2008 Honda Ridgeline uses the infamous J35A9 motor with the cylinder number 4 issues. This was the last year that Honda used this engine before improving the design for the next model year. Cylinder number 4 has piston ring issues that cause oil to burn, spark plugs to foul and a P0304 and VTM-4 dash lights to come on. If you are experiencing a P0304 code, the first thing we recommend doing is getting a compression check. Cylinder number 4 is fortunately in the front of the engine on the far left hand passenger's side if you are standing directly in front of your 2008 Ridgeline. A telltale sign of bad piston ring is smoke from the exhaust with a light blue tint. If compression is low, then you may be looking at an engine replacement instead of an ignition coil. If the compression on cylinder number 4 is good, then it could be another issue which is usually a bad ignition coil. Usual misfire codes are P0301 though P0306. Often times you may notice that a misfire code may appear for every single cylinder, even if one is just misfiring. In this case reset the ECU with your OBDII scanner or by simply disconnecting the battery for a minute, and drive your Ridgeline until it comes back on again, If it still does not identify which cylinder the misfire is coming from, you can disconnect each ignition coil from the harness while the engine is running. Keep in mind that disconnecting the coil while the engine running is okay, but removing the ignition coils is not okay. Removing the coil while the engine is running can send the high voltage surging back into the coil, damaging the coil or even the ECU.
2008 Honda Ridgeline Ignition Coil Replacement
Replacing the coil packs in the 2008 Ridgeline is not a difficult task. The back three ignition coils look hard to remove, but with basic tools and the right sized extension, replacing the back coils is no more difficult than the front three with the exception that they are not directly in front of you. W e also include a packet of 2.5g silicone dielectric grease which helps to keep moisture away from the vital components of the coil and spark plug, and helps to remove the ignition coil. If you have been having trouble removing the #4 ignition coil, you are not alone. The radiator fan will either have to be removed or bent a little bit to get the ignition coil pack out. Be careful if you chose to bend the radiator fan shroud. All in all, removing #4 ignition coil is not a difficult process.
Lifetime Warranty Ignition Coils For 2008 Honda Ridgeline
The coil packs we offer for the 2008 Honda Ridgeline come with a lifetime warranty. Yes, this is a real lifetime warranty that is good for as long as you own your Honda Ridgeline. We will pay to return any bad ignition coil, and send a replacement, all shipping costs on us for as long as you own your Honda Ridgeline. Even though our aftermarket ignition coils are quality products with some of the lowest defect rates of any coil in our price range, defects can still happen, and we want our customers to know that they are taken care of if thid were to happen.
