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Join Date: Nov 2007
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Unhappy 930 Turbo running badly - 2 to 3 k rpm

Having just imported my 930 turbo from Dubai to the UK - firstly would not start (finally identified it as being a burnt out wire by the fuse box ! )
Now running , but is running very rich ( and smoking because of it ) and at the moment will not pull beyond 2 to 3 k rpm under load - just loses all power - turbo not really cutting in - can get it to kick in in first , but not at all progressive - just kicks in

Any ideas of areas that i should start looking at

any help appreciated
Old 11-09-2007, 10:58 AM
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Sounds like it's choked with sand.. try dumping a warm beer on the intercooler ( sorry couldn't resist).
Are you sure you're getting good spark on all the cyclinders?
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Old 11-09-2007, 11:43 AM
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Its a none drinking car _ although it is driving me to drink instead , will check sparks this weekend
Old 11-09-2007, 11:48 AM
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Might I suggest taking a look at the O2 sensor. Sounds similar to the problem I had. I had been trouble shooting a 79 930 with an 87 engine in it for the past 3 months, checked the fuel system, vacuum system for leaks, sparks plugs, ignition wires, distributor, engine electrical and pretty much every other thing under the sun. The absolute last thing I checked was the O2 sensor. I unplugged it and tuned the engine to about 2.5% CO. Took her out for a test run and wouldn't you know it, problem solved.
Also since you found a burnt wire i might do a full check of the electrical system, you may have some fried sensors.
Hopefully this saves you from the frustration that I endured.

Last edited by idesicle; 11-10-2007 at 07:04 AM..
Old 11-10-2007, 07:00 AM
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I wonder if the CIS flap meter allen head screw setting was richened due to possibility of the pumps not getting enough current from a voltage drop in the burnt wiring. Just a thought.
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Last edited by NathanUK; 11-10-2007 at 03:48 PM..
Old 11-10-2007, 03:45 PM
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If the car came from Dubai it probably doesn't have an O2 sensor (Unless its an 89 930).

because the car was in the Middle East I would have a good look at the fuel delivery system from front to rear. The dusty environment gets into everything. Get the fuel pressures checked and ensure the WUR is working correctly. Get the fuel injectors flowed tested and have a look in the fuel tank to see if it is full of crud. Cut open the fuel filter. Probably a starting point. Have search on my forum name for the dramas I have had with my ex-Middle East 930
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Old 11-10-2007, 03:47 PM
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