At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Most likely the coils. Easiest way to check is swap them with another cylinder, start it, pull the plug wire connecter and if it doesn't change the engine the coil is bad. If it is the injector, then you can check it with an ohm meter. Touch the leads in the injector it should read 11 to 15 ohms. if you need help let me know.
Randy
First, are you certain you changed the plug for number 1? If so, check the power connection to the COP. If it is dirty or loose that can cause a misfire also.
Third cylinder back on the passenger side. I'd recommend changing all 8 coils and spark plugs. These coils don't last long, and once one goes, more will fail soon after. This job also requires removing the fuel rail to gain access to the coil and plugs. I personally have the same SUV and went through the same issue!!
Check the valves for that cylinder. Open the valve cover and turn the engine by hand and watch the valve as the 5th cylinder opens. Both the intake and out valves have to open then seal right back down. One of them may be stuck or burned out.
Hi Nascar2nd. From what you are describing it appears like an engine misfire. These trucks are notorious for bad ignition coils. They don't always set a code either, it depends on several factors. To check these out in my shop there is a mode in our scan tool called "mode 6". This allows us to look at certain engine data parameters to look at misfire to locate the offending cylinder(s). Unfortunately without the use of a scan tool you will not be able to see this. It may be in your best interests to get a shop to look at this for you and verify the bad cylinder. I have had issues with aftermarket coils and use Ford originals exclusively now. They have also reduced the price of them, good thing too because we go through many. Might be an opportune time to replace spark plugs as well. worn spark plugs can accelerate coil failure as a worn plug takes more energy to fire. Thank you for using FixYa !
Yes. I will try it and let you know it any other issue
×