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  #1  
Old 15th August 2008
saabassguy saabassguy is offline
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Default Help! 1st gear acceleration problem

Hey guys

Today after I floored the car (crossing multiple lanes of traffic, not very safe ) in my '03 9-3 (5 speed manual), I noticed poor acceleration from idle to about 3000-3500 RPM. This is only present in 1st gear, which leads me to think I may have a clutch or tranny problem. I did some reasearch and other possible failure modes may include issues with: fuel filter, spark plugs, vacuum leaks in hoses [EGR or others], or as I mentioned, transmission issues.

Anyone have any advice on where to start to fix the issue, what type of monitoring to do, etc..

Any help appreciated. The car currently has 82K miles on it.
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  #2  
Old 15th August 2008
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JMarkert JMarkert is offline
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Hmmm, do you have any evidence that the clutch is slipping? Do the rpms go up much faster than the speed? What happens if you try to start from a stop in second? If all seems 'normal', then it's probably not the clutch.

I'd suggest pulling the codes. Even though you don't have a cel light yet, some codes have to happen several times before the throw the light. You might learn something....
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  #3  
Old 16th August 2008
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I do belive first gear is limited in power and toruqe (Computer controlled)

Its done that way to limit the Torque steer on first.

Its very present if you watch how far your turbo needle goes, it just sticks at the same spot never hitting red.
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  #4  
Old 16th August 2008
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DavidMorgan DavidMorgan is offline
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I would never floor the car in 1st because immediately you have to change to 2nd. And yes it is governed .. I believe the revs are limited.
Floor it in 2nd yes, from 2,500 .. but hang on to the wheel

I do have stage 1 and a noisy inlet .. so mine goes into the red
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  #5  
Old 16th August 2008
joneslax18 joneslax18 is offline
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Lightbulb

I had a similar problem with my '05 93. mine had poor acceleration in first and second gear. took it to dealer and had throttle body replaced. that fixed the problem. it was covered by warranty. so, not sure what the cost is
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  #6  
Old 16th August 2008
JonV JonV is offline
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Misfires, Vacuum leaks usually generate CEL's and codes. The FPR is another option or there's a fuel pump control unit.

As David said, there is a Rev Limiter, I forget what the number is, but someone here will turn up with it.
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  #7  
Old 17th August 2008
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jackchoo jackchoo is offline
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sure sounds a lot like the TPS problems that i have been having.....
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  #8  
Old 18th August 2008
saabassguy saabassguy is offline
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Thanks for your help guys, but after doing some more research, I was led to the solution of the issue at hand. See below:


Early in the day: hot
late afternoon: Rain. Lots of rain.

Next, I get some lovely condensate in the fuel lines and when I gunned it, the condensate made its way through the engine. After I turned the car off to let it cool for a few minutes and started it back up, everything worked like a charm!
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