asbo-on-wheels

I only recently bought my MY99 wagon and am generally very pleased with it.

I noticed that the car seemed hessitant on fast acceleration after the initial turbo boost, so have fitted a pressure gauge. Now I can tell that the turbo cuts in nicely and the boost pressure rises smoothly up to 10psi (0.7 bar) then the gauge pointer flickers at 10psi and I can hear a light ticking/rattle which I think may be the solenoid operating? I have checked the ecu and no error codes are shown. I appear to have a 2 port solenoid and have tried to clean it with brake cleaner but it may have all evaporated by the time I drove at boost.

Should I try to clean the pipes again or should I check elsewhere?

vessy

You need to clean the solenoid in diagnostic mode, not when driving, do a search on here for guide.

asbo-on-wheels

I removed the solenoid this evening and gave it a good blast through with cleaner although I did not do this in diagnostic mode however as the light was very quickly fading. The fluid did seem to shift some muck at first but when I took the car up the road the car still stuttered at 10/11 psi.

Anyone have any ideas?

asbo-on-wheels

I wondered if it may be due to the plugs or coil pack what does anyone else think?

wrxjay

i think this is whats going on with mine dont know the boost as i have no gage


see my post on 4000 rpm to 5000rpm on boost


thanks jason

asbo-on-wheels

Does yours only misfire at those revs? I find that mine will mis-fire or splutter regardless of gear selected and even at lower revs but always when I try to accelerate smartly using the turbo. I have not noticed any other mis-fire when not using the turbo hence I thought it may be the boost solenoid.

BTW good to see some yokels on ere I'm near Devizes.

asbo-on-wheels

I have replaced the plugs which was not as bad a job as I had expected. I also took the opportunity to clean the MAF (someone had made a small hole in the gauze filter for this) and blasted some cleaner through the T piece pipes.

The wagon now accelerates and runs much smoother but I am still only getting 10 psi boost and then the car seems to be hessitating. I can hear a high pitched rattle through the gauge which may indicate the pressure is being restricted? It seems to be regardless of revs and happens when I press the loud pedal. I have no error codes on my ecu and am not sure what to do next without throwing money away on sensors until it goes away.

asbo-on-wheels

Forgot to add that the plugs were a good light brown colour which on normally aspirated cars indicates correct mixture.