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> You would probably have been better off using the 68 > FI with the later engine, > but if you want to switch to the 71 FI then you have > to switch EVERYTHING, > including the ECU, the wiring harness, and the > pressure sensor. > Well when i got the 68 there was a POS single weber progressive with a later engine (half of the cross member!!) and a whole bunch of problems. When I took the (71) engine out it ran great but it was an automatic and im not sure if the AT had a different wiring harness than the manual. on the wiring diagram there are 2 wires for some AT vacuum thing? I have the 71 brain, IAD(cold start inj., throttle valve switch, etc.), manifolds/injectors, distributer, Air cleaner,fuel pressure reg., fuel pump and wiring harness. I have not installed the later pressure sensor but i do have that handy. Its all pretty much 71 once i get the 71 PS in...BTW when i removed the PS it had oil dripping from it is it supposed to have oil inside? do i need to oil it again? could it have rusted from sitting 2 years? Now i was wondering is the PS hooked into the IAD (intake air dist.) on the left side under and between the 2 intake pipes? > You need to get ALL the wires connected before you > can expect things to run > properly. > there are only 2 wires that i am not sure about. I have the bentley manual and it shows the 68-69 70-71 and the later but the 68-69 it shows how the wiring is wired through the shrink wrap. The 70-71 shows the ECU pins and corresponding connector. I was wondering what is the differnce (added or deleted items) between 68 and 71 wiring? should I remove my wiring harness and try to rebuild it or maybe get another 71 wiring harness that is in better shape? > As Greg said, you have to make sure that you have > the pressure sensor hose > hooked up to BOTH the pressure sensor AND the intake > air distributor. > Are you sure that this 71 engine was good before you > installed it? This all > sounds like you have a lot of blowby which is a sign > of an engine which is not > very healthy. When i took this engine out it ran great with this FI setup. It was sitting for a 2 years and when i exchanged the flex plate and flywheel and getting everything prepped I ended up tipping it in its side and upside down to get to everything (fan shroud, oil sump etc.) could this have gotten oil in unknown places that would burn excessively? As far as FI goes (as an AT) was giving me little problems like having to put it in neutral when at stops but besides that it was fine. I was told the engine had a rebuild 15,000 miles ago. but you can never be too sure about that. I was going to do a compression check today to see if it could be my rings, but i will also hook up my PS and see what happens. > > > As for the engine not running very smoothly i am > > guessing that is from something not hooked up? I > > noticed that i had to keep pushing the number 1 FI > > connector back on. > > I'd like some more info on which parts are from 68 > and which are from 71. That > will help figure out what may not be connected > right. You also have to realize > that the FI wiring harness is 30 years old and needs > to be treated gently, or > you will break something. On another note the shrink tubing changes color half way down the harness, which i am guessing means somebody had tore into it, and who knows what they could have done. There is a bit of missed or cracked booties, and a few wires with little shrink tubing I have thought many times that if i knew the harness a little better i would tear it all apart and rebuild the whole harness. with new connectors/botties and shrink tubing (IIRC i think there was a discussion on the availablility of FI connectors a while ago) Thanks so much for your help I will be back tonight for an update. Heather __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org