North American Turbocoupe Organization



Sticking VAM
PetzJC Offline
Senior Member
#1
I have an 88 Turbo Coupe (ordered it new...has over 250,000 miles on it). Recently encountered VAM sticking fully open with WOT. Have to remove VAM outlet hose and "touch" vane to get it to snap back to closed position. VAM works fine in other than WOT driving. No codes with vane in "normal" position. Tried cleaning VAM. Vane doesn't contact sidewalls, and can't duplicate stuck open condition on the bench by manually moving vane. Only occurs installed, during WOT driving. Local Ford rep's remembered an issue with this, but couldn't remember/find details. Any help would be appreciated...
PetzJC
Former owner of 88 Silver T/C, loaded (except leather & A/T), original owner, 294,815 miles!!!
K&N, Gillis(18 psi), SVO roller #1, big SS valves, ported intake, head, & exhaust.
Short block & turbo original/untouched, spec-II/III clutch combo.
Polyurethane bushings throughout, Goodyear GT-HR 235/55R16
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tylerport Offline
Senior Member
#2
Maybe it's just plain worn out being as you've logged over 250,000 miles.

------------------
Jim Portteus
NATO Member
My Car
86 Turbo Coupe, LA3 w/ Intercooler and Larger VAM, Gillis Valve, 2 1/2" Downpipe to 2" Duals w/ 18" Glasspacks, 245/50R16's, 140MPH Speedo, A-pillar pod w/ Boost and A/F Ratio Gauges and Steeda Tri-Ax Shifter.
Jim Portteus
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Pete D Offline
Administrator
#3
It may be that the spring is getting weak. I emailed you some info
Pete Dunham


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PetzJC Offline
Senior Member
#4
This is the second VAM. Electric's side of the original VAM went out in '97 (~176,000 miles).
Former owner of 88 Silver T/C, loaded (except leather & A/T), original owner, 294,815 miles!!!
K&N, Gillis(18 psi), SVO roller #1, big SS valves, ported intake, head, & exhaust.
Short block & turbo original/untouched, spec-II/III clutch combo.
Polyurethane bushings throughout, Goodyear GT-HR 235/55R16
Reply

PetzJC Offline
Senior Member
#5
Thanks Pete D. Will check original posting/work Email tomorrow morning.
Former owner of 88 Silver T/C, loaded (except leather & A/T), original owner, 294,815 miles!!!
K&N, Gillis(18 psi), SVO roller #1, big SS valves, ported intake, head, & exhaust.
Short block & turbo original/untouched, spec-II/III clutch combo.
Polyurethane bushings throughout, Goodyear GT-HR 235/55R16
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