I drive atouut 200 km a day in a city traffic as a courier... last week had it serviced with change of spark plugs and air filter.. today the engine warning light came on and stays still.. no effect on performance, mileage is still the same.. any idea why it is there and how it can be fixed.. my mechanic told me not to worry about nothing wrong with the engineas it si running smooth as it was running before??
Check your gas cap. Whenyou put in gas the motor is suppose to be off. If there's not a good seal on gas cap that will cause the check engine light to come on. The mechanic should have a code reader for you and tell you what the light means.
SOURCE: why did i buy a ford
most vehicles that are new have a fail safe. most of the time when this ingages it has to do with low fluid levels especially low coolant. no codes thrown on the computer presents a unusual problem because when the fail safe ingages it should auto matically throw a code. tell me when you first start it does it drive normal for a while?
SOURCE: Codes P0171 and P0316
code po316 is a random misfire like plugs or wires po171 will cause po316 po171 is a lean o2 code on bank # 1 that is a vacuum leak need to check it better for a vac leak
SOURCE: Engine Fault light illuminates. Ford KA Collection
have you totally cleaned the fuse box and fuses
SOURCE: 97 F350 diesel check engine light stays on and is running rough?
Ok, lets take this from the top. I have a 97 f250 diesel. In mid may mine did the same thing. It's either one of two things. You have under valve cover harnesses (uvc). They slide in under your valve covers, you will see two wiring harnesses on the outside of the valve cover gaskets on either side of the block. Ok, it IS possible one of these slipped out of place and killed two of your injectors, causing the horrible running/ low idle/no power/ sounds like the truck is going to stall symptoms. The easiest way to check that is to unplug the wires while the truck is running and see if it kills the engine, if it doesen't unplug the other one on the same side of the valve cover. If both of these don't cause any change then you have a bigger problem, the IDM (Injector drive module).
FAIR WARNING: When you unplug the wires with the truck on it is extremely dangerous, it is 110 volt feed. It can kill you.
OK, the IDM is a silver box, 8"x10" approx dimensions, located on the driver side under the hood, over top the front tire. If you take the wires you unplugged and take a multi meter to them and they are dead, you have a bad IDM. This was the case with my truck. Ford designed the IDM to have a hole in the side to allow condensation to escape from it, unfortunately, this allows water inside and will short out resistors and practically kill half of your engine. Buy a new IDM on ebay for about $380. It takes 5 minuts to put it in.
I hope this helps you out man.
SOURCE: Ford F150 engine backfiring, running/idling rough
I Have a 1999 ford f150 4.6 that back fires and is just running really ruff when idling alot of nack fire a sord of like a pulse going on what is my problem?
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