after having the car sit for about 2-3 months, I took it for a drive and by the time I gat to about 5500rpm's I only have about 10psi of boost, I had previously shortened the hoses for the boost controller to clean things up in the engine compartment. Could that have caused this problem?What else could have caused this problem? Thanks
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88TC rebuilt a4ld, 8ua, gillis @ 17, K&N on vam, stock size exhaust(dual flowmasters and no cat), 255 walbro pump, kirban afpr, HKS SSQV blowoff valve, T5 coming soon
What kind of boost controller? Did you ever get more than 10 psi?
a gillis valve, it's not really limited to 10psi. It just wont spool fast enough, it runs out of rpms too fast. I switched the vam from my parts car onto it (I was painting the bracket), think maybe the vam door is sticking?
Thanks
I think the best thing to do right now is rule both the VAM and the turbo's physical condition out first..
Take the compressor inlet off of the turbo and check the blades for damage and/or shaft play and in/out play. Make sure they don't touch the housing. Put it back together, don't forget the orange ground wire.
Since you're already in there, go ahead and check your VAM door too
[Image: smile.gif]
How about it?
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Ryan Harris
88 TC, 5 speed, B&M Ripper Shifter, Walbro 190 LPH, Aeromotive FPR, K&N, 3.73's, 88K miles
well when I put the vam in the door didn't feel like it was sticking and the tension should be correct because it didn't look like it had been opened up before. As far as the turbo goes, It boosted perfect before the car sat. Also, even with it spooling slow, it doesn't make any weird noises. does this sound like a boost leak?
Thanks
I think you are on the right track with a boost leak.
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Jeff Korn
88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 23 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 04 Taurus Duratec (wifes car) // 91 Topaz (daughters first car)