Just picked up a 9000 CSE as a runabout

Just picked up a 9000 CSE as a runabout

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Rags

Original Poster:

3,644 posts

243 months

Monday 9th June 2008
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Its fully loaded and I paid not much for it....

However, all is good apart from when you use the kickdown facility, it will get to a certain rpm and then almost give you a thump through the whole car like a rev limiter would. It doesnt happen if you gradually increase speed, more like when you are accelerating as quickly as possible.

Any pointers?

Boosted LS1

21,198 posts

267 months

Monday 9th June 2008
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Engine mounts? Give the engine a rock and see how firm they are.

Rocket Pepper

1,281 posts

223 months

Monday 9th June 2008
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The problem sounds like the auto box. The seal is leaking behind the clutch and it thuds when changing gear in the manner you describe because of lack of fluid/pressure. It could last for a very long time like that. Probably already has. From cold start I bet it thumps first time you put it in gear?

Rags

Original Poster:

3,644 posts

243 months

Tuesday 10th June 2008
quotequote all
Hi,

Sorry let me describe it a little better as it happened again this morning.


Say for example, I just accelerate, it will be fine until it gets to a certain number of revs, it will then sort of hesitate, thats a better word for it and the car will shake a bit but then continue to accelerate - its as if someone if pulling the throttle cable the opposite way or something like that!

900T-R

20,405 posts

264 months

Tuesday 10th June 2008
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Does it have TCS (traction control using an early throttle-by-wire system which is prone to failure) or a throttle cable?

Rags

Original Poster:

3,644 posts

243 months

Tuesday 10th June 2008
quotequote all
will have to check this. No obvious traction control.

900T-R

20,405 posts

264 months

Tuesday 10th June 2008
quotequote all
Rags said:
will have to check this. No obvious traction control.
Then probably not - the working of TCS was nothing if not 'obvious'!wink

Rags

Original Poster:

3,644 posts

243 months

Tuesday 10th June 2008
quotequote all
Yeah I would imagine it is, however only have the car for a day or two, I cant even remember what its reg number is lol!

Rocket Pepper

1,281 posts

223 months

Wednesday 11th June 2008
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Rags said:
Say for example, I just accelerate, it will be fine until it gets to a certain number of revs, it will then sort of hesitate, thats a better word for it and the car will shake a bit but then continue to accelerate - its as if someone if pulling the throttle cable the opposite way or something like that!
If it shakes like scuttle shake, and it feels like it's through the whole body, this too sounds like the auto box is at fault. You could check the drive shaft spiders in the drive pods, or the drive pods themselves where they exit the transmission casing. It does sound like auto box to me though. It's the inconsistency that convinces me so.

Rags

Original Poster:

3,644 posts

243 months

Tuesday 17th June 2008
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Many Thanks for your diagnosis.

Funnily enough, it hasn't occurred since!

Wing Commander

2,204 posts

239 months

Wednesday 7th July 2010
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Hi

Sorry to resurrect an old thread, but I am having a similar problem...

Saab 9000 2.3 LPT Manual

When the car is under load ie accelerating, or maintaining a constant speed up a hill, at certain revs (seems random at what revs it happens), it will hesitate. Just for a split second and then the power comes back in. It is almost as if a small bit of dirt/water went through the fuel system, I guess.

This problem has not changed since I gave the car a full service, including new spark plugs, new oil, new fuel filter and a shot of redex.

Any thoughts anyone??? Vacuum leak?

tog

4,622 posts

235 months

Wednesday 7th July 2010
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I've had this a few times on different 9000s and always thought it was the overboost protection dumping all the boost. Quite alarming when it happens!

Wing Commander

2,204 posts

239 months

Wednesday 7th July 2010
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Ahh, it's not dumping all the power. I don't feel concerned that its all power is removed, just a light, quick stutter or hesitation. It won't affect me revving up through the gear, just feel like I have lifted off the throttle for a split second (but it happens far faster than the throttle response could do, if that makes sense)

Oh, and it doesn't happen just at WOT. I could be ambling at 2k RPM and it happen

Edited by Wing Commander on Wednesday 7th July 17:15

Carlos774

1 posts

172 months

Thursday 8th July 2010
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Hi , was browsing and saw this post, whilst you changed the fuel filter (I presume you mean the inline) I seem to recollect a filter on the pump itself?
Or it could be the pump giving up the ghost perhaps?.
Try a fuel pressure test and that may eliminate the fuel system from the equation.
All electrical connections on the ignition circuit need to be good ,parting the obvious ones and spraying with electrical contact cleaner is always a wise move as is checking for any loose or partially broken wires.
Hope this may help.(Yes I've been there...smile )

Rags

Original Poster:

3,644 posts

243 months

Thursday 8th July 2010
quotequote all
hahaha god I remember this beast of a runabout.

Sold it on ebay for 50% more than I bought it for and it took some amazing abuse!