C15 Acert Help (w/ cat et results)

Yeah 1400 ridiculous hey. Im gonna do some more testing on harness today. Finally found a schematic for iva wires. Funny 5 and 6 share a supply wire, good place to start i spose.

 

I changed the engine harness.. No differance.. I did notice one thing tho if i do the test right at 140 f only 5 sometimes 6 come back as no good, if i run the test at 180 1,2,5 and 6 come back as no good.. Each of them starts failing the hotter the engine gets.. Possible oil pressure problem? The gauge in truck hot says 60psi at 1000 rpm, 40 at idle. What the hell, cat house doesnt have any ideas.

 

I ran the test first thing this morning when it was about 0c outside.. Ran the test right when engine hit 140f and it passed the test everything working perfect. As engine got warmer it failed the tests dropping actuators the warmer it got. I let it cool down below 140 again and sure enough everything worked normal again. So def temperature related. I took it back to the cat house to have them test iva rail pressure thinking maybe pressure is dropping for some reason as it warms up.

 

Thanks for the offer, cat tried a new housing on 5 and 6 didnt change anything.

 

Yah i did, thats one thing I thought of too. Im thinking maybe a cracked iva oil rail.. But well see what there pressure test tells us.