ACCEL 140032-8 SuperCoil Ignition Coil - Yellow - 8-Pack

Got these for my 2001 Crown Victoria P71 CNG-powered Police Interceptor, now going on 94,000 miles and starting to growl (idle rough) from old spark plugs and COPs ("Coil On Plugs"). Ford replaced one COP and plug and it ran better for a little while, but then the rough idle came back. The dealer wanted almost $100 a COP plus labor to replace the rest of them with Ford parts, so I got these COPS from Accel for about $180 for the set of eight. I've had great luck with Accel products on my other cars in the past, and they did not disappoint me here. I paid Ford to put them in (because one thing I don't do is mess with 3000 psi fuel systems, which had to be disconnected to install the COPs). At first the Ford tech said they lacked a rubber insulator on the side of the coil top like the OEM part, but I called Accel directly in Cleveland and they assured me they would fit and work fine in my CNG car, so I went ahead and told Ford to put them in, along with 8 new Ford spark plugs. (Also the Amazon "Fits your car" pull-down at the top of the order page said they'd fit.) Sure enough, they worked perfectly, and the car now idles smoothly and has perceptibly more power. I can only assume that Ford added the insulator on the side of their OEM COPs to prevent heat damage; the Accels don't have this insulator but I'm hoping they are designed for higher performance and don't need it. Also the vertical black boots that come down off the yellow Accel COPs are noticably thicker than the OEM part, and there's no noticable static on the radio after installation. Finally, the yellow top on the Accel COPs matche the yellow "Optima" deep discharge Police battery, and makes the overall engine compartment look cooler. This car has in fact been a car show star, for it's unusual combination of Police features and CNG fuel system. Similar CNG-powered Crown Vics have been known to run over 600,000 miles, but it's a good idea to change the COPs and plugs every 90,000 miles apparently, as the stock plugs were quite worn when I replaced them and the COPs were showing signs of wear as well. At any rate, these Accel COPs are highly recommended as a cost-effective way to improve performance and keep these great CNG cars on the road using cheap, plentiful, clean-burning American natural gas!

My E250 van was starting to spit and sputter. Sometimes it would be okay, sometimes it would get pretty bad. At first I thought I got into some bad gas when traveling, as it started acting up after a fill up on no name gas. But not so. At 70,000 miles I replaced the spark plugs (2V, no problems), still spit and sputter. I thought about replacing the coils, but the price was high. Then I found this deal on Amazon for the entire 8 set of Accels and went for it. My van now runs great! The mileage increased 2 to 3 mpg, so the money I spent on the parts will pay for itself with less gas. Simple to install, but rather tight working conditions on the van. These come with new boots, too. Unplug the wire with the little squeeze clamp, remove one bolt, pull off the old coil with the old boot, and install the new one. I did use a little silicon dielectric grease on the rubber boots to help keep them from sticking onto the plug. I used a piece of wire to rub it around the inside lip. (when I removed the original boots, one or two did stick and I used needle nose pliers to pull them off.) Worth the effort, I've towed my car trailer with car, and it pulls much better.

Installed on a 99 Ford Expedition EB w/ 4.5. Engine back to life with full power. Fuel economy increased about 10%... LOL on this truck that's about 16mpg so every ounce counts! Mechanic said these are good coils... could not come near Amazon price but installed for labor... took about 4 hours. Hint... most shops and large chains will have two prices for the same job. One price near $800 bucks labor is to install new coil packs. Another price near $400 bucks labor is to install new plugs. Pay for the plug job... throw the mechanic $50 and have him swap out the coil packs which have to be removed anyway to install the new plugs. On some trucks the coil packs are easy to get to. On the Expedition they are a PAIN. Yea could have done it myself but would have taken me 2 days to get to the rear coils. Worth every penny to have a pro do it. So far so good. Will update if there are any issues with these. Early yet... so far about 1,000 miles and no issues.

I don't normally write reviews but I'm exceptionally happy with this order. My 2004 Ford F150 5.4L was misfiring at 60-90Km/h. The dealer diagnosed a host of problems including the transmission amounting to over $2000. We live in Qatar where dealers think they can charge any amount they want and the typical customer will just take them at their word. I borrowed my neighbour's diagnostic computer (also available on Amazon) and decided to take a look myself. The computer showed the errors PO345, PO354, PO011 and PO021. We decided to start with new coils. Again the dealer wanted almost $500 for the set of 8 but I found these Accel coils for much less and they work great. All errors disappeared, engine light turned off and the truck runs like a top! The angle of the boot was different so I used the old boots. The angle of the plug at the top is also a little different for my engine model so they were a little tough to plug in but not impossible. I would suggest changing the spark plugs at the same time but give your engine a good cleaning first so junk doesn't fall in your engine. There are some good videos to guide you on youtube. Thanks!

I replaced the failing stock coils and some aftermarket coils I purchased with these high performance coils. The key is to replace all 8 at one time. If you have several coils failing over a two or three month period, it is more cost effective to replace them all in one shot, especially for the price you can get these high performance coils. NOTE TO LOOK OUT FOR: If your intake manifold has a water leak and is getting moisture on the coils, this can short them out. That is what was happening to me on my 2001 Ford Expedition 5.4L. My Mechanic replace the intake manifold and then I had him install all eight coils at once. My truck has 170K miles on it, and I have had coils going out one at a time over the last 30K miles. At the time I did not know it was the leaking intake manifold that was shorting out the coils one at a time, so I replace 5 or 6, one at a time as they would go out. Finally did it right and replaced them all after intake manifold leak problem was fixed. NOW, I have more power and better gas mileage. They are working great. It has been about one month since they were installed. We will see how long they last. Was getting 11.2 MPG, now getting 13.3 MPG. UPDATE: It has been over 2 years now and still going strong.

After 2 years they are breaking one by one

I am not one to write many reviews but I wanted to help by giving some feedback. I was getting a random misfire code on my Expedition while is was under a load (higher RPM's). I chased this by replacing spark plugs, fuel filter, fuel injection cleaning etc. While all of this was probably helpful it didnt correct my problem. I have about 95,000 miles and a mechanic friend told me "it's probably not the coil packs cause they rarely go bad." Well he was wrong... I bought these because I couldn't pass up the price and I was tired of chasing my tail. Replaced all 8 and it works like a champ. Truck runs like new without any issues. This was a tough diagnostics because it idled fine and you could rev the car and it seems fine. Hopefully this information will help someone out to save the time it took me to figure it out. Make sure and use Permatex Dielectric Tune-Up Grease on the ends that connect to the spark plug.... Update 05/01/11 - Found out my cats were clogged as well. 70% in passenger side and 30% on driver side. On the Ford V8's it is a four cat system setup. I went to a performance shop and had them install two high flow cats (still emission friendly). Man what a difference in performance. This thing runs awesome and it even changed the exhaust note.....

I have eight of these on my engine and so far after 3 month and 4000 miles they are working perfectly, they seem to work just as good as OEM and the price is right!!! I have had three other cheap aftermarket (autozone) coils that only lasted about a year before going bad, so I hope these last a long time. If you buy all eight at once the price is much better also. added 12-29-12 -- As the factory coils get old more than 7 years the rubber boots go bad, but more important is that the epoxy that seals the top of coil will get hair-line cracks letting in moisture causing misfire. I have found it most cost effective to buy all 8 coils at once and replace them all. these Accel coils work great. I have been using them on two engines now for more than a year, they work great. Added 9-28-13 now 3 years and 40,000 miles and they work perfect. and better gas mileage.