For about the last year, when I drive steadily at or above 70mph/3500rpm in 5th gear, the "Check engine" light will come on. Reading out the codes always shows "P0101" and "P0103" which is "Engine misfire cyl#1/3". After a 2 days of driving below this level, the light goes off. It happens in cold and warm, wet and dry weather.
There are no symptoms of roughness, knocking, loss of power nor loss of gas mileage. When accelerating through the gears, the engine pulls smoothly up to 5000rpm. Idle is normal. Switching from 87 octane to 91 octane for several tankfuls made no difference.
Dealer has looked and looked to no avail. Any suggestions?
There are no symptoms of roughness, knocking, loss of power nor loss of gas mileage. When accelerating through the gears, the engine pulls smoothly up to 5000rpm. Idle is normal. Switching from 87 octane to 91 octane for several tankfuls made no difference.
Dealer has looked and looked to no avail. Any suggestions?
Mar 2, 2008 at 8:59 PM
