Husler005 TSi
Probationary Member
- 18
- 1
- Mar 8, 2004
-
West Michigan,
Michigan
I am going to list the changes/ repairs on my car to tell you, everything that has been done to my car to rule out other problems.
I have a 1992 Talon TSI with 148,000 miles. FWD. New (replaced in the past 2 years unless noted otherwise): alternator, battery, starter, wires (10K on them), plugs (brand new, NGK V-power, 6 temp), clutch (ACT 3100 ish), flywheel (lightened), both clutch cylinders, wheel bearings, CV axles and seals, fuel filter, air filter (modded, K&N), water pump, harmonic balancer, and belts. I have also fixed the ECU with the correct capacitors. I have an EGR block off plate, Turbosmart boost controller, boost/vacuum gauge. I had the head rebuilt about 13,000 miles ago, replacing the valves, valve seals. The timing belt has about 15K on it. The car has a 3" downpipe and a 2.5" from there (to a muffler). I think that's it.
Okay, now for the problem. The car will drive, turn, idle, rev (all the way to redline with clutch in or in neutral) just fine. Under load the turbo will spool, up to about 15psi (where the MBC is set at) with the accelerator down about 3/4 the way. Immediately when I press the throttle to WOT or 100% it sputters in a systematic, repetitive manor, like a machine gun. It does not random miss, it is consistent, like a drummer playing a beat almost. I think it is the ECU battling something and doing it. It will miss probably 20 times per second, with each miss the same time distance apart. I replaced the plugs - no change. The wires are newer with about 10K on them, they are Bosch 7mm. I mention these because they are usually the first things that should be replaced when a miss occurs under WOT.
It missed once or twice one day, then the next day was a little worse, now it will do it 100% of the time when the car drives at WOT. Again, it will not sputter at all when I rev the engine in neutral, only under boost. On the side, I was driving with regular gasoline (I know... fuel is expensive!) but I switched back to premium recently, within 2 fill ups of when this whole thing started. Another thing: my valve cover gasket was leaking a little so I torqued down the screws (finding that one was about to come out!); this was within 2 weeks of this issue starting. The leak is gone as of now.
Has anyone had this problem before? I am sorry for the long thread but I wanted to clear everything up before you started making recommendations. Thank you, I appreciate all input.
I have a 1992 Talon TSI with 148,000 miles. FWD. New (replaced in the past 2 years unless noted otherwise): alternator, battery, starter, wires (10K on them), plugs (brand new, NGK V-power, 6 temp), clutch (ACT 3100 ish), flywheel (lightened), both clutch cylinders, wheel bearings, CV axles and seals, fuel filter, air filter (modded, K&N), water pump, harmonic balancer, and belts. I have also fixed the ECU with the correct capacitors. I have an EGR block off plate, Turbosmart boost controller, boost/vacuum gauge. I had the head rebuilt about 13,000 miles ago, replacing the valves, valve seals. The timing belt has about 15K on it. The car has a 3" downpipe and a 2.5" from there (to a muffler). I think that's it.
Okay, now for the problem. The car will drive, turn, idle, rev (all the way to redline with clutch in or in neutral) just fine. Under load the turbo will spool, up to about 15psi (where the MBC is set at) with the accelerator down about 3/4 the way. Immediately when I press the throttle to WOT or 100% it sputters in a systematic, repetitive manor, like a machine gun. It does not random miss, it is consistent, like a drummer playing a beat almost. I think it is the ECU battling something and doing it. It will miss probably 20 times per second, with each miss the same time distance apart. I replaced the plugs - no change. The wires are newer with about 10K on them, they are Bosch 7mm. I mention these because they are usually the first things that should be replaced when a miss occurs under WOT.
It missed once or twice one day, then the next day was a little worse, now it will do it 100% of the time when the car drives at WOT. Again, it will not sputter at all when I rev the engine in neutral, only under boost. On the side, I was driving with regular gasoline (I know... fuel is expensive!) but I switched back to premium recently, within 2 fill ups of when this whole thing started. Another thing: my valve cover gasket was leaking a little so I torqued down the screws (finding that one was about to come out!); this was within 2 weeks of this issue starting. The leak is gone as of now.
Has anyone had this problem before? I am sorry for the long thread but I wanted to clear everything up before you started making recommendations. Thank you, I appreciate all input.
