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D jetronic??? Betcha I know what it is!! (RJ, the flrdging 412 master that I am....) The fuel pump relay also turns on the Auxilary Air regulator, which is about 2 o'clock from the oil breather and just about under it... It lets in un ungodly amount of air into the intake for a few seconds, until the power from the Fuel pump relay heats an expansion coil and closes it. Extra air = higher idle. Thats what the problem with mine was- You can also check for vacumn leaks and all that jazz...or adjust it- but the adjustment wont work if the air regulator on. Too much air.... For reviving an old FI I would.... 1) NEW HOSES!!!!!- drain the tank while your at it- its all crap anyway... 2) Take out each injector, spray it clean with some carb stuff. Check the seals- 3) I would throw some FI cleaner in the tank and manually let the pump run for about 10 minutes- I just took a test lead to power- I figured this got fresh gas to every part and disloges gunk through the filter and all that goodness. Eat away the varnish.... -rj >---------- >From: Luis A. Pieretti[SMTP:panin@n-link.com] >Reply To: Luis A. Pieretti >Sent: Friday, April 23, 1999 4:41 PM >To: vwtype3.org >Cc: VintageVW List >Subject: [T3] Long pause for FI > >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 trucŒöõ e 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 my Nissan 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 > >------------------------------------------------------------------- >Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe > >