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At 01:39 PM 4/23/99 -0700, Luis A. Pieretti said... >Hi there! > I'm in looking at a T4 412 Station Wagon. It has been sitting for 5 >years after a tranny overhaul. The owner said that after the overhaul RPM's >were way high when idle. He also said the car ran great at normal highway >speeds, but at the stop lights the RPM's were driving him crazy. (He is an >older man and the car RPM's were giving him massive headaches. The price is >too ridiculous for me not to buy it. I was looking for a small truck to >haul my VW parts around but with this bargain I think my truck will be this >412. I already have a Notch and two T1's. With the Notch and one of the T1 >being slowly restored a need for this station wagon is a must (there is a >limit I can carry on myUœ-³ 240sx). The questions are. How FI is >affected >by the engine not being started for say; 5 years? What might be the cause >for the idle being so high. > >Thanks in advance >take care y'all >Luis What year is this Type-IV? The first thing that comes to mind is the mass air flow sensor. I believe it has one. It should be a black box looking thing. Inside is a flap and a sensor. The sensor controls the flap which allows the amount of air that enters into the throat. I don't have my manuals here with me so I could be thinking about a different FI system. The timing could be too far advanced too. I've known people to do this to adjust the idle, believe it or not. And for that matter, the idle adjustment just might be out of whack too. There's also a chance that you have a vacuum leak but these usually cause a rough idle. I also don't know if this engine has a WOT sensor. If it does, it will be a simple micro switch. Though this usually causes the FI to run a bit richer when they go out of whack which I guess could cause a high RPM at idle. HTH! Robert K. Kuhn - http://www.hooligan.cc ICQ # 3714283 (nickname: godzilla) ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org