Can a car misfire at 40 to 60 mph?
Can a car misfire at 40 to 60 mph?
First thing I want to say is that many issues can lead to the same symptoms of hesitation or misfire between 40 to 60 mph Hesitation at this speed does not mean that the engine is only hesitating at this speed and THIS IS THE TRICK
What causes hesitation when cruising at 40 to 60 mph?
In my case a random misfire (hesitation) was happening every 4 to 5 seconds and was caused by a bad air/fuel mixture (lean misfire) due to the bad oxygen sensor This sensor was causing a rough idle too, after changing it, no more hesitation when cruising and idle became much smoother the link below helped me to test the sensor
Why does my car misfire at high speeds?
Misfire is due to ignition, or lack thereof. That rules out 2, 3, and 4 of your theory. You don’t even mention coils which are a known weak link of these cars. 1) Throttle body is more of a rough idle phenomenon, not very noticeable at higher speeds as the caked up residue is insignificant at wide open throttle positions.
Why does my truck shudder at 55 mph?
It is only when my speed drifts back and forth during the 45 – 55 mph zone that the problem is noticeable. If I am going up a hill, the shudder occurs at a lower speed, depending on how steep the grade is.
First thing I want to say is that many issues can lead to the same symptoms of hesitation or misfire between 40 to 60 mph Hesitation at this speed does not mean that the engine is only hesitating at this speed and THIS IS THE TRICK
Misfire is due to ignition, or lack thereof. That rules out 2, 3, and 4 of your theory. You don’t even mention coils which are a known weak link of these cars. 1) Throttle body is more of a rough idle phenomenon, not very noticeable at higher speeds as the caked up residue is insignificant at wide open throttle positions.
It is only when my speed drifts back and forth during the 45 – 55 mph zone that the problem is noticeable. If I am going up a hill, the shudder occurs at a lower speed, depending on how steep the grade is.
In my case a random misfire (hesitation) was happening every 4 to 5 seconds and was caused by a bad air/fuel mixture (lean misfire) due to the bad oxygen sensor This sensor was causing a rough idle too, after changing it, no more hesitation when cruising and idle became much smoother the link below helped me to test the sensor
What makes an engine Miss between 30 and 50 mph?
An expert that got 10 achievements. An expert that got 5 achievements. An expert whose answer got voted for 500 times. Re: Engine seems to miss / sputter between 30 mph and 50… Hi Nascar2nd. From what you are describing it appears like an engine misfire. These trucks are notorious for bad ignition coils.
What causes a car to hesitate at 45 mph?
Basically – part throttle, light load, slight grade or hill. 45 to 60 mph Engine will start getting to wear it is working, starts to sound “different” and run a bit rougher, then it will buck or hesitate. It will not always buck or hesitate once it runs rougher, but it will ONLY do it after the load, sound, and running rougher have started.
What causes engine to sputter at 30 mph?
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).
When did the national speed limit change to 65 mph?
The law was widely disregarded by motorists, even after the national maximum was increased to 65 mph (105 km/h) on certain roads in 1987 and 1988. In 1995, the law was repealed by the National Highway System Designation Act of 1995, returning the choice of speed limit to each state.
