Good Afternoon To All
My 1995 U-300 with the Cat 3176 started showing me the check engine light on steady but flashes about every 4 seconds at idle,
I'm pretty remote where I live in South Louisiana, so not so easy to get to someone with a scanner, So I'm trying to figure it out, If I run down the road in 4th gear and keep the RPM above 1500 no light when I drop down to about 1350 the light come back on, When I accelerate hard the light goes out and stays out if I keep the RPM up..
Any Idea's
I would first suspect oil pressure. It could be the sensor for the engine light sensor or you have low oil
pressure.
Oil Pressure Normal, All Temp's Running down the road normal.
Then check the check light temp sensor.