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Originally Posted by Racinfan83
Thanks guys that helps! I know I have some kind of vacuum leak under the Plenum somewhere, as the pump runs on and off when u turn the key on. I ran it back to the Plenum, so its under there somewhere. Gotta get some $ together before I can think about changing or having the injectors changed out. As to the flywheel - I don't know if its been changed - but I really doubt it from what I can tell. Seems like a totally original car. Dealer checked the trans oil when I had it here the other day and it was good. A/C compressor was nearly killing the car before it got changed to R134. Only difference is that it actually blows cold air now...lol. posted this from my phone so if there are errors that's why...
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Another source of noise for the ZF6 is the type of oil used. The GM part numbered oil (not available anymore ) or Havoline 10W30 or the Castrol 10w60 are quiet. The Amsoil is a bit noisier. Who knows what's in there. As for the pump running and the vacuum leak you should measure the time interval that it pumps. I recommend any thing <10 seconds be looked into eventually but if it's as low as 3sec then should be looked into fairly soon as that can effect "full power".
I converted to R134 and notice the "almost stall" with the stock chip in. With my DRM chip I don't.
Congrats on the car. Take your time learning it and fixing what you can when you can. The RIDE is worth it all. Cheaper that going to Disneyland every year and twice the fun.
The solutions for the oil leak already given are sufficient.
I'd say the noise on shut off is probably the timing chains and is normal.
You mentioned some shifting issues. I'll offer up one more that you may not have noticed yet. Aggressive shifting works as expected 1-4 but 5 and 6 not because of the ratio. When you go from 4 to 5 the rpm needs to come down a bit before the shift else you get lots of noise out of the dual mass flywheel. This takes some getting use to.
Probably the most urgent thing to look into right away is the hydraulics for the clutch. If you're low on fluid then the shift quality is crap. The reservoir is right under the brake vacuum assist on the firewall on the drives side.