iamironman
07/12/2009, 07:27 PM
Well it was running fine but was a little sluggish at highway speeds, then all of a sudden, started cold one morning and idle started fluctuating up and down... almost stalling at times but stayed running... there then would ramp up to 2k on tach...and would be steady there or sometimes go down to 1500rpm for a couple mins then back to 2000rpm for a couple mins... if I gunned her she would do the wild lower rpm up 'n down...
I traced it down to a vacuum leak in the diaphragm that sits behind the top of the intake next to the FPR behind the engine and adjacent to the firewall, it controlls the butterflys inside the intake... something wore out in the rod going into the intake to the passenger side butterflys... so I got to looking at the Axiom intake... and it has the same thing (part) on it.. started comparing and the whole top (upper)of the intake IS the same except for a small threaded tower that part of the throttle/cruise cables bracket is mounted to (because the axiom uses no throttle cable, TB is fly-by-wire) otherwise... it's exactly the same... awesome...
Made my own gasket buy using the old Axiom gasket as a template and a roll of gasket material from AutoZone that cost $6. And it took me less than an hour (in 102 degree heat) to switch them out... unbolted everything... 4 bolts for fuelrails... 8 bolts for intake upper... 1 bolt for throttle/cruise cables bracket... 2 bolts for bracket that wraps around FPR... lift up fuelrails... slide out intake upper... slide in new one... reconnect vacuum hoses (5) and sensor plugs (2). Done.
The throttle/cruise cables bracket had two bolts one on the tower I mentioned earlier and another were one of the fuelrail bolts is... so it'll still hold if you make sure the fuelrail bolt is snug and line the bracket properly.
Back to running like a Ruthless Speed Demon now...
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I traced it down to a vacuum leak in the diaphragm that sits behind the top of the intake next to the FPR behind the engine and adjacent to the firewall, it controlls the butterflys inside the intake... something wore out in the rod going into the intake to the passenger side butterflys... so I got to looking at the Axiom intake... and it has the same thing (part) on it.. started comparing and the whole top (upper)of the intake IS the same except for a small threaded tower that part of the throttle/cruise cables bracket is mounted to (because the axiom uses no throttle cable, TB is fly-by-wire) otherwise... it's exactly the same... awesome...
Made my own gasket buy using the old Axiom gasket as a template and a roll of gasket material from AutoZone that cost $6. And it took me less than an hour (in 102 degree heat) to switch them out... unbolted everything... 4 bolts for fuelrails... 8 bolts for intake upper... 1 bolt for throttle/cruise cables bracket... 2 bolts for bracket that wraps around FPR... lift up fuelrails... slide out intake upper... slide in new one... reconnect vacuum hoses (5) and sensor plugs (2). Done.
The throttle/cruise cables bracket had two bolts one on the tower I mentioned earlier and another were one of the fuelrail bolts is... so it'll still hold if you make sure the fuelrail bolt is snug and line the bracket properly.
Back to running like a Ruthless Speed Demon now...
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