Hi All,
There is a FUEL PUMP CONTROL UNIT - exists for turbo & 3.6L . Does anyone know what does it do exactly?
PN 22648AA180, see it marked on the pics attached.
Thanks and regards, ilib11
bigBADbenny wrote:Additionally logging fuel pump duty cycle vs tuning parameters to see if lean/rich conditions are related to the three fuel pump duty states, 30, 60 & 100%.
ilib11 wrote:My initial hypothesis was that a dying fuel pump with low duty cycle from the pump controller may result in a low fuel pressure on idle and that may cause my problems with idle shaking under the load that is described in my another tread.
From the experiment I can see that fuel pressure is in the spec range and unlikely causing problems.
ilib11 wrote:Re internal pressure relief valve and a pressure with return line blocked - I would expect this pressure where the relief valve would open to be high enough to cover boost - i.e. 51psi + max boost pressure , i.e. in 60+ psi range. The engine control module knows the manifold pressure and it simply may not engage a high duty cycle until it sees a boost. Probably with low duty cycle on idle the output pressure simply did not reach 60+ psi range.
Return to 2.5T engine specific
Users browsing this forum: No registered users and 3 guests