Trucks great....in gas mode. So I'll go fill up on CNG and drive 20, 40 sometimes 60 miles then bam it will switch to gas like it would when I run out of nat gas. My check engine light comes on naturally and it comes up as my maf sensor. It has been doing this lately when I fill up with cng. When I turn off the vehicle and turn it back on it will run on cng fine with my check engine light on. If I reset the code it just does it again. Do I have some kind of underlying problem with my cng kit which is an impco kit or should I just spend the $300 and get a new maf sensor? The light never comes on in regular gas mode just when I am running on cng. Any ideas other than the obvious? I've cleaned the sensor with electronic cleaner and replaced my air filter with new and it is still unchanged.
Thanks!
Thanks!
Comment