Luke_Miller
CEG'er
I've seen mentioned in several articles about the Secondaries opening. What are they and what does that mean them opening? Can anyone point to or giva a good explanation? TIA.
-
Welcome to the Contour Enthusiasts Group, the best resource for the Ford Contour and Mercury Mystique.
You can register to join the community.
Noob Question about Secondaries
- Thread starter Luke_Miller
- Start date
beyondloadedSE
Hard-core CEG'er
the lower intake manifold has primary and secondary ports. The secondary ports have butterfly valves (much like that of the throttle body) that remained closed but open up at 3750 RPMs by the IMRC (intake manifold runner control). The secondaries are there to boost low end torque when they are closed.
BAD SVT
Addicted CEG'er
thats about right. Don't worry! when u drive ur svt and the secondaries open, u'll know it 
.
.hetfield
or hetfeild
I have 115k on the Sport, and it sees 4000+ rpm almost every day. The secondaries still open just fine. The only known issue is that the placement of the IMRC over the engine could cause failure due to heat.
mjwood0
CEG'er
One of the reasons I kinda like my '95 -- vacuum operated secondaries!
thats about right. Don't worry! when u drive ur svt and the secondaries open, u'll know it
you deff will know.
SVT3C
CEG'er
Yes sometimes the cable can break, when I took mine apart I noticed that it was wearing out and had to clean out little pieces of the cable. I think I remember reading that a bicycle cable can replace it. I'll be doing that soon. Then again some people have never had problems with it :shrug: .
csvtjohnga
Hard-core CEG'er
my dads got 261,xxx Miles on his 98 SVT and no problems what so ever with the IMRC or cables or hell. anything. daily surpasses the 4000RPM mark
