sequentials spool down during acceleration
#26
PartsGuideCo
iTrader: (9)
Today get off the UIM and saw that one of the solenoid valves was disconnected (brown at pic).
Connected it and go ride. The problem still here .
Also noticed that:
1)I have an oil leak from turbos (I suppose that we need to change gasket there)
2)I have 2 broken intakes from AST: one from tank to air pump, the second from the lowest tank part.
3)I haven't a restictor on the vacuum hose to MAP (boost) sensor. Is it needed in 99 specs car?
What of these can be a reason for low boost at 1st and 2nd?
Connected it and go ride. The problem still here .
Also noticed that:
1)I have an oil leak from turbos (I suppose that we need to change gasket there)
2)I have 2 broken intakes from AST: one from tank to air pump, the second from the lowest tank part.
3)I haven't a restictor on the vacuum hose to MAP (boost) sensor. Is it needed in 99 specs car?
What of these can be a reason for low boost at 1st and 2nd?
#27
PartsGuideCo
iTrader: (9)
Today I changed spark plugs, run it again and I had good at all gears, but only once.
After that the car runs at badly at 1,2 and good at 3,4,5.
Oil leak from turbos dissappeared...
I suppose it the reason may be I haven't a restrictor on map hose.
Who can say where defenitely I should look for it?
After that the car runs at badly at 1,2 and good at 3,4,5.
Oil leak from turbos dissappeared...
I suppose it the reason may be I haven't a restrictor on map hose.
Who can say where defenitely I should look for it?
#30
PartsGuideCo
iTrader: (9)
Checked it - work properly.
But noticed strange thing - o2 sensor gives rich mix when idling (800 rpm), lean at 2000 rpm, rich at 4000 rpm...
Power FC also said that o2 sensor work.
It looks like a trouble in Power FC.
Tried to change "o2 F\B" - no changes in work.
Going to connect stock ECU.
But noticed strange thing - o2 sensor gives rich mix when idling (800 rpm), lean at 2000 rpm, rich at 4000 rpm...
Power FC also said that o2 sensor work.
It looks like a trouble in Power FC.
Tried to change "o2 F\B" - no changes in work.
Going to connect stock ECU.
#31
Rotary Enthusiast
It's been a long time since I've had the twins under the hood but I had a similar problem that I found was caused by a collapsing rubber intake elbow between the air filter box and the turbo's that restricted the intake. Try removal of the elbow. If that cures it, you will need a new elbow. The sound under the hood you described is probably the same one I heard under my hood. The collapsed elbow fluttered under boost.
#36
Rotary Enthusiast
turns out my memory isn't as good as I thought. If you go to page c-15 in the 1994 field service manual, it is part #9 on that page. It is the straight rubber bellows connection. Before I went single turbo, I found a spring that closely fit inside it, to keep it from collapsing. You should just remove it and run the car to see if that is your problem.
Thread
Thread Starter
Forum
Replies
Last Post
eplusz
General Rotary Tech Support
15
10-07-15 04:04 PM
ls1swap
3rd Generation Specific (1993-2002)
12
10-01-15 07:58 PM