This engine was completely rebuilt less than a year ago. Suddenly it started running very rough. check engine light came on and will blink round 45 mph. There is also a hot smell but the engine isn't showing hot.
Check oil and coolant levels (at the radiator cap) first. Run fault codes to find which sensor triggered the engine light . The light is to tell you that the engine is in danger of failure so do not dismiss the light as not important.. Hot smells mean that the engine is very hot and you may not have any coolant in the system to activate the temp light or gauge.
SOURCE: Blazer runs rough when running at 45 to 55 mph
the problem was low transmission fluid. added half a quart and the problem went away.
SOURCE: engine runs rough at certain speeds 3.0 v6 flex-fuel 1999 ranger
Check and see if the EGR valve is leaking, to check this spray water on it at idle, if the water steams off the valve is leaking and is the source of your problem, also are you sure you hooked the new DPFE sensor up right? re-check it..
SOURCE: 2005 Cobalt Check engine light blinking.
You need to Replace the Catalytic Converter. That is what you are Smelling. It has Clogged up and will also Cause the Light on the Dash Problem. Please Rate My Response! Thanks!
SOURCE: Engine light is blinking and it runs very rough/low power in gear.
Check the coil pack. Same symptoms on mine. It went at 74,000.
You can get the resistance specs from a shop manual. I have been told the plastic engine cover traps heat and makes short life of the coil pack. I removed the top engin cover, cosmetic only after replacing mine. You will probably need spark plugs also they are probably fowled by now. If you have not changed spark plug wires in awhile in would not hurt.
SOURCE: My 2007 Toyota Tundra 4.7l shows VSC OFF lights
check air filter for dirty , how many miles or kms have your car? , maybe need to replace spark plugs, try to reset the ecu for a momentany malfunction, remove the negative battery terminal few minutes and reconnect,start engine and drive, check if lights goes off , please write me
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