The 5.4-liter is prone to three different types of abnormal engine noise. PUSHROD CRATE ENGINES // 302. The 4.6L, 3-valve and 5.4L, 3-valve variable cam timing (VCT) feature may emit a light knock in normal operation and is audible only at idle speed with a hot engine (gear selector in park or neutral). When Ford developed the 3.2 5-banger they wanted more power than the previous 4-banger but something not as thirsty as a 6-cylinder. If you think it sounds bad, compare it to a 2 valve 4.6; typically found in the Ford Crown Victora. Otherwise, scanners are really cheap. If something has worked its way loose on your engine, it can rattle and dance at different RPMs. At least one driver reported that they got a brand new 2018 Ford F-150 and noticed these rattling noises fairly soon afterwards. While the exhaust is outside of the engine itself, it can often cause sounds that are confused for an internal engine rattle. When the catalytic converter does fail, it’ll often give you code P0420, or P0430. A rattling engine can be very disturbing. The exhaust system is one of the most common culprits that can make it sound like your Ford Mondeo’s engine is rattling. In other cases the noise may require further investigation. Vehicle is a 2018 F-150 with the 5. • Is the noise occurring at idle or above idle speed? TECHNICAL SERVICE BULLETIN 2.0L EcoBoost - Rattle Noise And Cracked Flexplate 19-2236 06 August 2019 Model: Ford 2015-2018 Edge Issue: Some 2015-2018 Edge vehicles equipped with a 2.0L EcoBoost engine may exhibit a rattle.This may be more noticeable at idle. On the exhaust system, heat shields prevent hot exhaust temperatures from affecting nearby parts. There have been complaints that some Ford vehicles equipped with a 4.6L 3-valve or 5.4L 3-valve engine may exhibit a ticking and/or knocking noise after reaching normal operating temperature. 2004 Ford F150 5.4Triton FX4package, 65,000 miles I have an intermittent rattle/knock from my engine compartment. Move the probe from front to rear if necessary. Average failure mileage is 150 miles. Most auto parts stores are happy to scan your codes free of charge. If it is leaking, the most common place that it leaks from is going to be where it bolts to the block at the exhaust manifolds. Return the engine speed to idle and verify if the knock returns. If initial pre-checks have been completed and the noise sounds like it is coming from the front engine, replace the VCT Phaser Kit. A rattling engine can be caused be the exhaust, timing chain, loose accessories, and much more. If isolated, only replace the intake and exhaust lifters on the affected cylinder bank. As it ages, the metals inside can break down. For starters, it will power one of Ford’s most popular high performance cars in the UK and Europe markets — the upcoming Fiesta ST. 3 cylinder engines are usually thought of as weak kneed fuel sippers for econo cars like the late and otherwise regrettable Geo Metro … While it’s most noticeable at startup, that doesn’t mean that you won’t be able to hear it all times. Noise increases with RPM, hot or cold, and is recognized at the top of the engine. VCT phasers may knock at hot idle. If they begin to rust away, they can rattle and tap, driving you to the mad house. Also, just replaced the spark plugs, thinking i blew one, so that didn't fix the problem. In some cases the noise may be a normal characteristic of these engines. Sorting out and defining the noise as reported by the customer is important to diagnose and repair the condition. Good luck fixing the rattle coming from your Ford Mondeo. External Engine: Balancing Combustion Forces, Internal Engine: Engine Build: Toyota Supra B58 Inline 6-Cylinder Engine, Engine: Diagnosing Crankshaft Position Sensors, Diagnostics: Power Window Regulator Replacement, News: Castrol To Power First Carbon Neutral NASCAR Race Team, News: EnerSys Now Battery Sponsor For NASCAR Racing Experience, Products: JASPER Offers GM 6.6L Duramax Diesel Engine, News: Applications Now Being Accepted For Mitchell 1 Scholarship, The Importance of Worn Center Bearing Replacement, Know Your Engine When Determining Spark Plug Service Intervals. Engine Rattling Causes: Ford Mondeo. My first guess was crank/rod bearings, but I understand they should be noisy under load and not at idle. Here are the most common causes of a rattling sound in your Mondeo: Exhaust. If you’ve been looking for all of the issues described above, it could be that there is something inside of the engine that is making it rattle. You should hear a rattle as the engine comes back down from the higher RPM. A handful of owners of newer Ford F-150 pickups with the 5.0-liter engine are experiencing a frustrating issue. As soon as the engine is under load the rattle is gone. The Ford Performance TechLine phone system is online. Some folks have described it as a rattle. The most recently reported issues are listed below. The number one rattling culprit in your Mondeo’s exhaust system is the heat shield. If the noise is a VCT knock, it should disappear. Use a stethoscope on the top of the cam cover bolt heads to confirm which bank is affected. Once the above pre-checks are complete, check for sound level from the following components in the order listed. Noticed this last week havn,t driven it since, F150. It’s usually on the driver’s side of the truck. If your exhaust system is leaking, it will often make an aggressive ticking sound. If both banks seem loud with the hood down, compare wheel well sound level to another comparable vehicle. F-150 engine is making a metallic knocking noise under light load and owners are puzzled. Some vehicles equipped with a 4.6L, 3-valve or 5.4L, 3-valve engine may exhibit a ticking and/or knocking noise after reaching normal operating temperature, or may exhibit a rattle upon starting. An MAF circuit high, IAT circuit low, and misfire on cylinder 1. If there is no oil in the crankcase, the engine is going to sound like a rattling old buzzsaw. The 2018 Ford F-150 has 1 problems reported for engine rattle. VIDEO: How Can You Tell If A Spark Plug Is Worn Out? Injector noise (ticking) is considered normal. Ford Ranger 5 Cylinder Diesel Engine Problems. 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