2004
The 2004 Nissan Altima 2.5L and 3.5L engines both have one thing in common: they use the pencil style ignition coil packs. These are also called ignition coil on plugs or C.O.P. As these age, they tend to fail within a similar time frame, like headlight bulbs. It's recommended to replace old (around 7 years) ignition coils at the same time. Only problem is that many people say these are too expensive from local stores. We have the entire set for an amazing deal. Select the engine (2.5 4 Cylinder or 3.5 V6) that your Altima uses to find out our amazing prices.
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Ignition Coil Replacement For 2004 Nissan Altima
The 2004 Altima 2.5 and 3.5 both use independent ignition coils. The 2.5 uses 4 coils, and the 3.5 uses 6 coils. We have the ignition coils available for both vehicles. These can be quite pricey at the local auto store or dealer, running from $40-over $100 each. We have the ignition coils here at Araparts for more affordable prices. Select the engine size of your 2004 Nissan Altima to find the right ignition coils at a great price. Make sure to check the ground on your '04 Altima before installing new ignition coils. Bad grounds have been known to cause ignition coils to fail on this specific vehicle. The ground cable that you want to check before doing this job is the main ground. This ground cable goes from the transmission to the negative terminal on the battery. If this cable breaks, the ignition coils and or ECU/ECM (main computer) is used as a ground, which can literally melt or fry them. If your ignition coils appear to be scorched, burn, blistered or melted, then you may have a bad ground. Simply replacing the ignition coils without resolving the ground issue will cause the new ignition coils to fry almost as soon as you start your Altima
Diagnosing a Bad Ignition Coil in Your 2004 Nissan Altima
If the ground cables check out, and the ignition coils are not melted, but you still have a misfire, then it may just be a bad ignition coil. The check engine light will come on when the engine misfires, and you can scan the check engine light with any basic sub $20 OBDII scanner. Misfire codes range from P0300 (random misfire), P0301 (Cylinder 1 misfire) through P0306 (Cylinder 6 misfire). Of course just because there is a misfire on that cylinder doesn't mean you have a bad ignition coil. An easy way to find out if the problem is the ignition coil or something else is by swapping the coil over to another cylinder. Reset the ECU with your scanner, or by disconnecting the battery for at least one full minute. Resetting the ECM will prevent false readings and give the computer a chance to identify the new misfire location. If the misfire code follows the ignition coil, the you know for sure that the ignition coil is bad. If there is no change, then it may be something else. Cam and crankshaft sensor replacement is also common on the 2004 Altima, and if these are bad, they can certainly cause a misfire.
Lifetime Warranty Ignition Coils For 2004 Nissan Altima
The Araparts brand coil packs that we offer for your 2004 Altima come with a lifetime warranty, good for as long as you own your Altima. We cover the shipping carrier costs both ways as well so you don't have to worry about extra costs when exchanging a faulty part. Of course, we work hard to ensure that our quality is high and that this never happens, but the reality is that it does happen even to the best brands out there, and we want you to know that if there are any issues with our products, we will replace them and cover all shipping costs.
