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Let me preface all this by saying I've been driving c900s for almost 20 years and I'm a professional autobody tech who's been at it for about 34 years. I don't know everything about SAABs, but I do know a bit from keeping my 900s on the road.....
Last December I bought a very clean 94,000 mile '93 9000 Aero. First time owning a 9000 car for me. Imola red with the cool Aero interior. Five speed car. One owner, (woman) so no abuse. She fixed things as soon as they popped up, but really didn't do those kind of prevenative maintainance things we SAAB guys do, like vac lines and things like that.
Since I've had the car, I've put in: headliner out of very clean donor car, (original was drooping in many places). A crack free dash top, and returned the car back to it's original stereo, as someone had just put in a cheap head unit and bypassed the factory amp but left the stock speakers. That remedied everything in the interior back to really nice.
Mechanically I've replaced: all four rotors and pads, exhaust from cat back, complete clutch setup including rear main seal master and slave, fluid lines, etc. ALL of it. Sway bar links in front.
During all of this money spending that's been going on, I keep reading about the dreaded TCS situation on these cars. Knowing the nature of cars and taking into consideration that this car is 21 years old and lived in the northeast it's whole life, I expect sooner or later to have to deal with some variation of a TCS problem. Maybe not, but...well, those of you with TCS know the drill.....All this rambling brings me to today. I take the car for a fourty mile drive, mostly highway, and on the return trip I notice that the car seems to have no power. I push the pedal down and the car does increase speed but VERY gradually. Having read just enough TCS posts here and on other sites, I have just enough info in my head to be dangerous! I start self-diagnosing as I drive; no check engine light on, no TCS light on, no over heating on the gauge, no blow-off valve "pop" on decel. I figure I'm in the "limp home mode" that I've read about. I'm surprised that I'm not seeing and CEL or TCS light on though. The car drives but accelerates like there's literally a potato stuck in the tailpipe. I get home without incident. I sit down in the house and start pouring over "TCS" and "Limp home" threads here for some insight.
I go back out to the car and start with the easy things first: I go to the parts store, get a roll of vac line and carefully replace all the vacum lines. Every one of mine crumbles but was intact until I grabbed them. Start the car and the throttle seems responsive sitting in my driveway. I take the car out for a spin. Still accelerates like it's got a potato in the tailpipe. Push the gas pedal down and car does not respond quickly at all. Frustrated, (as I kind of was babying it while I diagnosed) I mashed the pedal to the floor. The car bucked, let out a large POOOF! I looked in the rearview mirror at that second and I could see what appeared to be a large rust colored cloud behind me and the car jumped to attention! Shifted into third, pushed the pedal down and..BINGO!, we're back to normal! Car runs great, FAST as it ever was. Here's my questions; What the heck happened??? The exhaust is completely new other than the downpipe/cat. Was it plugged in the CAT? If so, how did that just suddenly happen? Has anybody here ever had this happen to them? I'm glad it didn't turn out to be TCS related, but I sure would like to know what just happened here! Happy, but puzzled. Cheers, Bob T.
posted by 50.176.21...
, Mon, 18 Aug 2014 04:53:56
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