killer_queen168

Okay, i'll try to explain my problems as specific as possible and i badly need some advice on how to solve it.


1. My car is running on the stock twin turbos. Problem is, if you floor the pedal from full stop (0mph) and rev the 1st gear all the way up to 8000 rpm and do a quick shift to 2nd gear, the boost while on 2nd gear is only about 0.3 bar(1st gear 0.8 bar). But get this, if i repeat it again only this time i dont do a quick shift(let the rpm fall below 3000 rpm) and then engage 2nd gear a floor the pedal, the boost runs steadily again. i suspect that when i do a quick shift, the 2nd larger turbo does spool. Do u guys ever had this problem?


2. the next problem. Since i bought this car 2 months back, i've hardly driven in until recently i took it for a long journey. i realized that the steering starts to vibrate after touching 100km/h (63mph) and will continue to do so until about 140km/h. i took it to the nearest tyre dealer and had the front rims balanced again. i didnt do any "on wheel balancing though" since afew of my friends with rear-wheel drive cars said that the front wheel is "free". is this true? i've checked the wheels fro dents but they seem fine to me. should i change the tyres?


3.Lastly, i noticed that going through un even roads, there is some squeaking sound coming from the rear end. mind you the absobers are about 6 months old(stock standard). could the sound be a sign of a worn out bushing?



i'm sorry if the explanation is too long. i guess thats the best decription i could give for now. and thanks in advance for everyones help.

tt7hvn

iTrader: (5)

1) i occasionally have that boosting issue during speed shifts, but there is a certain "sweet spot" that every car has during speed shifting. plus, just don't slam on the gas to accelerate as fast as you can, learn your cars acceleration ability and learn to push it down accordingly so you can maintain boost.

2) one of your rims may be slightly bent out of shape, other than that, the only thing i could think of is tire balancing, or the tread wear might be uneven.

3) mine does that all the time, i think it's the pillow mounts and associated bushings in the suspension, ie: trailing arms, toe links, diff mounts etc....your're going to have to check them all.

dgeesaman

iTrader: (7)

Welcome. FYI, you have here essentially 3 differnet questions. I suggest you put each in an individual thread next time.

Check valves, loose hoses, and solenoids. Start by testing the check valves under the UIM and looking for loose hoses. That's the first layer of troubleshooting. Don't be shy about replacing the check valves if you're unsure of them.

If you have an earlier FD with the 8 separate solenoids under the UIM, then I suggest you replace both of the turbo control solenoids with new ones.

Here in the states it's easy to find a shop that will remove each wheel and dynamic balance it. I suggest you do that next.

These cars are squeaky in general. Bushings and pillowballs are a possibility, although those parts tend to cause popping and clunking rather than squeaks. Check you exhaust for rubbing, the exhaust heat shields for looseness (particularly the brackets that hold the upper heat shield onto the main cat).

Dave