My truck has been hard starting for about a week, it wouldn't start yesterday for about 2 hours, and I finally got it to fire off and drive home, now won't start at all, I cracked an injector line to see if the pump was pumping fuel and it was. I checked the codes and got p1689, the vp is a little over a year old so I'm hoping that the computer chip in it is updated and wouldn't go out that soon, When it does crank though, you would never know there was an issue, so this is what is confusing me.

Any help would be greatly appreciated.

Thanks

 

According to BlueChip Diesel, your VP is done when you have 1689\

read this link


http://www.bluechipdiesel.com/vp44diagnostichelp.html

 

Partner, you're describing my exact problem that started back in late Feb. I won't go into the 2 months of gory details--all fixed now--but do yourself a favor and install a good lift pump. Long story short: I installed reman vp44 and still had the problem....came at again with new DDRP and problem resolved. Couldn't be happier.

 

could you get this code with a bad chip installed? just wondering if a bad connection could cause this code to be put out.