drop in vacuum
When I installed my system the vacuum on the handheld matched what I see with a vacuum gauge on the intake, 15hg. A few days ago the controller dropped to 8hg and my AFR went from 13.4ish into the high 12s no matte what the vacuum and AFR stay at those numbers. It got worse yesterday. I am not showing .2 hg on handheld and my AFR is 10.5, the trim is maxed out at -33.6. I did a smoke test for exhaust leaks, I do not have any. I tried loosening the 4 bolts up front, saw several post about gasket issues. Nothing changed. This morning the truck smoked when I started it up and had raw gas coming out of exhaust. I immediately shut off truck. I emailed fitech right after. No response as of yet. I also did a recal back to default no changed. The map sensor readings were in the high 50s when it ran correctly, it now stays between 98 and 100. Any suggestions would be awesome!!
What is the vacuum reading on the gauge on the manifold? Did you do a smoke test on the vacuum side or only the exhaust? Super rich at idle can mean a vacuum leak. An excess of fuel on the O2 sensor can kill it.
15HG on the manifold. It is super rich all the time map, afr, and vacuum do not change ever.
Check the rubber seal on the Map sensor the how too is on here somewhere
