Noticed a few weeks ago my crusie control stopped working. Since last weekend i have had intermittent starting problems. The following codes appear on the code reader: P1689, P1693, P0237. After i get the truck started, it runs fine, although it seems to be lacking a litlle power. My truck only has 70000 miles on it and it seems a little early for the injection pump to be going out? Any suggestions?
I strongly suggest getting a fuel pressure gauge on that truck. Even bone stock they barely have enough flow to the injection pump. Too little flow (pressure) and the $1000+ vp44 is toast. Knowing fuel pressure can determine how well the engine will perform. 10 PSI at WOT is the minimum value your looking for.
check to make sure all your connections are good on ur chip... i had a head gasket done on my 2002 dodge and had the same codes show up.. turns out they forgot to put a ground wire back on for my edge tuner.... hooked the ground back up cleared the codes and havent had anything since.