Originally Posted by jazty
Is that on the side of the filter housing? Do you have the model # for that fuel pressure regulator? I may do the same fix..
yes and its easy to replace... it is a brass nut on the side.. my bus has a return line plumbed off of this.. im not sure if this is stock on the IHC? i know on the ford 7.3 it is not...
this design is also for the later Model ECM's.. I dont know if it affects the earlier pre-97 engines or not.. the TSI didnt say.
the IHC part number is 1830915C91. I ordered it from my local IHC dealer.. (rush truck center in COlumbus ohio).. it took a couple days to get it..
I separated all of the parts as I took them out because i needed to clear my Air-Conditioner hose.
before you buy the part, make sure you need it... put a fuel pressure gauge on the test port and make sure you are running in that 45-50 PSI range at idle... your gauge may appear to puilse..
if you have 65-70 then you dont need the new spring kit.. supposedly you can tell by looking the nut.. if the nuit is notched then its already updated.. if its smooth its not (supposedly)..
the higher pressure regulator was made factory equipment at some point...
NOTE -I only know of this for the T-444E, I dont know if it applies to the DT-466E but I think not...
its main purpose is to quiet the 'tap....tap.tap....tap-tap-tap " you hear at idle after the engine warms up... I just felt that anything which was made factory original and altered fuel pressure would be a nice update to make..
I was told by the guy at the dealer that I could bring the bus in at some point and have the ECM updated (for a shop charge).. as he said likely itsn ever been done.. and some worthy software changes were made..
Service-maxx is not meant for upgrading the firmware.. the dealer has more access to the engine software than we have with Servicemaxx