Date: Wed, 27 Nov 2002 18:06:36 -0400 From: J Dexter <noaddressnopsamantispamtrick.org> Subject: Eureka!! '89 9000 CD turbo sputter solved for $150 Canadian!!!
Salutations: It wasn't the APC controller under the dash it wasn't the waste gate and it wasn't the fuel pump.. Ladies and gentlemen affected - please take a moment to examine your distributor rotor (the '85-'89 doesn't have a DI unit) - and check to see if there is any oil along the bottom of the rotor or in the plug wire cap (the unit sticks out at right angles to the head) then check to see if the lower plug wire is loose on the rotor.. If it is - check again to see if there is oil contamination in wire cap.. What is apparently happening is that oil is migrating along the bottom of the rotor into the lower plug wire cap and grounding the #4 wire to the engine - which is in turn mis-reading as a knock under load to the APC turbo overboost controller - which then correctly cuts your fuel supply thinking the engine is detonating - all of which causes the fuel to cut out (which feels exactly like turbo sputter) at about 1/2 to 3/4 in the yellow range.. This situation was severely exacerbated on my engine by the addition of Bosch Platinum plugs (reading FR7DPX on the ring) which were WAY over gapped for the application despite claiming to be direct swap for the NGK's.. There are, however, some outstanding questions left which this group might be able to help with.. On a simply roll over compression test - I'm reading 130-130-145-128 on the pistons (304,000k on the engine).. Is this remarkably low? I am wondering now if there is excessive crankcase pressure forcing oil through the distributor mount (and a few other places here and there around the block).. The crankcase vent seems to be clean and clear - but I am trying to make sure I'm not blowing by the rings and forcing oil out of the block and head.. If not blow-by - what should I be looking at to stop the oil leaking out from the distributor mount? - Will I get lucky here again and find an O ring in there? Anyway - happy days - I now have a spare APC controller with associated under dash panel and circuit pieces available for trade - I'm looking for interior bits like front seat leather skins (light brown), a tan upper dash deck a cheap windscreen replacment (mine is startng to haze) and all the rear reading lights I can find.. If you ever need a SAAB fixed in the Halifax Nova Scotia area - use Tom Mcdonnell Service Center off Robie Street - (902) 455 0431.. J Dexter - webmaster - http://www.dexterdyne.org/ All tunes no cookies no ads no news no weather no phone in All the Time..