Pcm Owners Operation And Maintenance Manual: Fill & Download for Free

Catalytic converter damage none if [3] [4] ECM is working properly.Lower grade gasoline every thing else being equal other that octane level, only effects pinging, lower performance and MPG and perhaps engine damage if the driver does not back off on the throttle due the collision of two flame fronts.“Read your owners manual carefully. If you loan your vehicle make sure you advise driver of proper fuel requirements.”Special option High performance/ High Output engines and options will have their own requirements that vary from the standard base models.Vehicle engines and fuel systems have become similar to certain individuals with special dietary needs the wrong meal can cause adverse effects or send them to the repair shop unnecessarily.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~requirements~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~What Happens If You Put The Wrong Octane Fuel In Your Car?Putting the wrong octane fuel into your car is a very common mistake. The fuel nozzles are all the same design and next to each other at the fuel pump. In addition to this, it can be tricky to know what the differences are between octane levels.What Happens If You Put In Higher Octane Fuel Into An Engine That Doesn’t Need It?There is a pervasive myth that using a higher-octane fuel is better for your car’s performance. Hint – it’s not. Typically, although there are some variations among engines, putting a higher-octane gas into your car than it requires will neither help nor hurt your car’s performance. There are some engines that are not designed to burn higher-octane fuel and you may see a reduction in power and fuel economy.This mistake should not cause any major damage to your car – just be sure to pick the correct octane gasoline next time you fill up.What Happens If You Put Lower Octane Fuel Into An Engine That Requires High-Octane Fuel?Whether done by mistake or done to try to save on fuel costs – putting low octane fuel into an engine that requires a higher octane can cause problems that destroy your engine.If you fill an engine designed to run on high-octane gas with a lower octane than recommended you will notice effects almost immediately.(especially when engine at operating temperature and extremely hot)You will notice a poor engine performance. Depending on how long you have been using the lower octane fuel the erratic combustion produced from this error can cause over-heating and irreversible damage to your engine.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~___[2}__Any time the normal combustion is is altered emissions will always be affected using the right octane fuel level should minimize the effects of pre-ignition from gasoline on a engine operating at normal coolant temperature.Pre-ignition of fuel changes with engine operation temperature even High octane fuels will pre ignite if they are used outside their temperature range.Modern computers can alter and operation into a default/limp mode affecting operation[3} This computer is a self learning device which has been programmed to adjust for driving conditions and the habits of the driver. This adaption is learned over time and will change while in operation.The Knock/detonation sensorWhat is a Knock Sensor?A [knock sensor](What Is a Knock Sensor?) can be characterized as a tiny electronic microphone; it is put in place to listen for pre-ignition knocks and then regulate the timing by retarding it at two degree intervals. There are two types of pre-ignition; the first is when you get premature combustion in the cylinder before the piston reaches top dead center. This can be caused by dirty gas, low octane fuel, timing issues with the engine, and also by the wrong spark plugs. The second is engine run on, when the vehicle is turned off the engine still "rattles" as if it is on. The cause for this type of pre-ignition is a spark plug that is too hot or an improper plug for application. The knock sensor cannot help with this type of pre-ignition.If you feel an unusual knocking in your car, especially at high speeds, the problem may be a faulty knock sensor. This is an important engine part that serves two main purposes.IdentificationA knock sensor is a knob-like part that is linked to the car's engine. As the name implies, it senses knocks in the engine. Wells Manufacturing, a company that produces knock sensors, likens the sound of an engine knock to marbles against metal.MonitoringOne of the purposes of a knock sensor is to monitor the performance of the engine. If there is a problem, the knock sensor will send a signal to the PCM (Powertrain Control Module--the car's computer).ProtectionKnock sensors also protect car parts from the damaging effects of engine knock. When a knock sensor is bad, it can't regulate the engine properly. The car vibrates and it sounds like there is something banging up against the car's cylinder. The knocking action can destroy the pistons, rods, valves, gaskets and plugs.Gas MileageA knock sensor is important to a car's fuel efficiency. It helps the car balance its timing and fuel-to-air mix, which optimizes the amount of power to the engine.ConsiderationsFailure to replace a bad knock sensor over an extended period of time can possibly lead to extensive and expensive damage to the engine.search “end gas gas autoignition images” for more graphs and images~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~[1} Pressure and temperature effects on fuels with varying octane sensitivity at high load in SI engines _( S I ) Spark Ignition knowledge and bar graph at footnote[1]. COMBUSTION AND FLAME1. IntroductionA basic understanding that engine knock could be caused by end gas autoignition phenomena was established with cylinder-pressure measurements in the late 1910′s and early 1920s [1]. Yet a fully detailed understanding of knock and other autoignition phenomena has proven elusive. Knock continues to be a barrier to achieving higher efficiency in spark ignition (SI) engines, and the recent automotive trends of downsizing and downspeeding engines have exacerbated the issue by driving engines toward higher power density and higher load duty cycles.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Compression Ratio and Octane Ratings: What You Need to KnowWhich brings us to the octane ratings in gasoline. Quite simply, octane ratings are a measurement of a gas's ability to resist detonation. Most gas stations offer three grades of octane, with regular rated typically at 87, mid-grade at 89 and premium at 92 or 93 [source: Federal Trade Commission]. It's easy to find what octane rating a gas has: Stations are required to post them on bright yellow stickers on each pump.Untitled Document images of damage from preignitionIf the regular spark(from the spark plug/igtition coil) occurs shortly after the pre-ignition, the colliding of the two flame fronts will cause a pinging noise. Preignition causes loss of engine power and can cause severe damage to pistons, rings and valves. ... Each can lead to the other and either condition can cause extensive engine damage.Detonation and pinging are two terms/things In most publications you will see that one can lead to other, which is false pre ignition always happens before detonation.Pre-ignition happens fromLean fuel mixtureFuel octane too lowImproper ignition timingLugging ___(operating in to high gear upgrades or towing in OD over drive)Carbon depositsExcessive milling of heads or block, which will increase compression ratio.add 7. wrong spark plug type___ (may cause run on with ignition off hen hot}____8. overheating cooling system problems——[2]—Abnormal operation may allow combustion pressures to develop so fast that the heat and pressure will "explode" the remaining unburned fuel. This produces the knock, often called "ping", carbon knock, etc. Actually this is detonation. The knock results from the violent explosion when the normal flame front runs into the secondary flame front. Detonation will cause piston and ring damage, top ring groove wear, scoring, sticking rings, loose head gaskets and possible complete engine failure.[3] How a Car Computers Work Explained in Under 10 Minutes[4 Reasons For A Converter FailureDetonation and Pre-Ignition[1] __ Combustion and Flame Volume 177, March 2017, Pages 49-66Hydrocarbon Gas Flammability - Part 1 of 3 in a Series on ExplosionsGnanendra Prasad's answer to What is the flash and fire point of petrolVehicle fuel management and ECM control beware of aftermarket parts and purchasing questionable vehicles.DRIVING; Altering Your Engine With New ChipsEdited to remove personal Identities and Corporation namesUntil the late 1970's, a car's fuel-and-air mixture was regulated by the carburetor, a relatively simple device as old as the automobile itself. But today's fuel injection systems are controlled by increasingly powerful onboard computers that regulate combustion efficiency, govern fuel economy and regulate emissions to federal and state standards. In most cases, when setting up a vehicle's computer, carmakers choose conservative settings that will allow the greatest gas mileage and cut down on maintenance problems, but will not always deliver the to-the-limits performance that owners want.E-mechanics are reprogramming systems to overwrite factory settings and take advantage of higher-octane gasoline.Partly to combat hackers, many carmakers are using encrypted chips in new models or, like Toyota, have done away with removable memory chips altogether.Garage operators across the country say they are seeing more cars with burned-out engines, partly because reprogrammed chips sometimes supply too much fuel and allow turbo pressure to exceed recommended limits.