Need help w/ my new 90 TSI AWD

[blackmirage]

Hey guys, I've just purchased not too long ago a 1990 AWD TSI, and it runs rough. When I first got it we drove it home and it wouldnt go above 2800-3000rpm constantly building boost apparently and the fumes it was emitting were herendous. Well once we got it home we found that at the downpipe and the cat there were no gaskets and it was leaking. So right now the car is running with only a downpipe. We checked the plugs and Cylinder 4 the one farthest from the driver side, was full of oil. 3,2,1 were not filled with oil but JET BLACK, so we changed the plugs and all the seals and gaskets on the Valve Cover. Oh and by the way the previous owner had the firing order ALL wrong. So we fixed that. Then we noticed that the Exhaust manifold was smoking/leaking. and this wasnt from the liquid wrench we sprayed on anything because it should have burned off by now, so we took the manifold bolts off and brought the manifold back as far as it would go so we didnt have to take EVERYTHING off and put the new gasket in. No smoke for the most part, there is a very minute amt of smoking now, but we are thnking maybe its cracked on the underside where we cant see. We changed the air filter because well it was NASTY.... Now you know where we stand, my most prevelant problem is that the car wont rev past the mentioned 2800-3000 rpm UNLESS the Air Flow sensor in the intake is unplugged. with it plugged in it throws a CEL and it wont run very well. Do you think that this is caused by a bad Air Flow Sensor? I'm trying to get this running so I'll be coming back to this thread with all my ?'s. But I am reading alot and looking at the VFAQ, so yes I am doing my searching. Sorry for the long post, I appreciate any and all help.. THANKS!

 

[blackmirage]

bump

 

[prettyblue6bolt]

As for the cracked exhaust manifold, the original manifolds from 1g dsm's were known for cracking. Mine was cracked when i bought my 1g talon and it smoked too. I would look closely for any cracks there might be, they could be underneath too. As for the maf sensor, measure the resistance of the electrical connector according to the temp of the sensor. On 1g dsm's air temp and mass air were both one sensor. My repair manual says, if it's 68 degrees then it should read 2.3-3 kilo-ohms.

 

[Raph]

well if its cracked ,it may cause air to get pulled in,ruining the AFR the ecu gets from the 02 sensor causing you to run like crap.

 

[blackmirage]

You know where I can get manifold bolts? Because these REALLY dont look like they were what came with the car, . I mean they are working but.. I wanna use the ones specified. You know, and I'm thinking I may just purchase a DNP while I'm replacing things. Any special gasket to use with the DNP? I'm gonna also pick up a Air Sensor off DSMTRADER, and see what happens once I remedy those two things.