Help...Trouble at the Drag Strip
Thread Starter
Instructor
Joined: Dec 2007
Posts: 145
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From: Corsicana Texas
Help...Trouble at the Drag Strip
Last Friday nite I went to a test and tune for the first time with my '04 A4 Coupe. I made 3 passes and was pleased with the performance up to a point. The car ran strong but would not shift into 3rd gear under full throttle. I had the shifter in 3 the first pass and in D the next two. The car reached red line and the rev-limiter/fuel cutoff activated at the top of 2nd gear each pass. I had to let off the accelerator, wait for it to shift to third and then floor it again for the last 300 feet of the quarter mile. My car shifts very well under light or moderate acceleration, and only has 20,000 miles on it. It has not been modified at all except I have removed the factory mufflers and now have none at all. Even so, my elapsed times were consistent and were between 13.32 and 13.35 seconds at only 91 miles per hour. I feel the car would have run a very low 13 if it had shifted properly and I know my mph should have been over 105 for the et I ran. Please tell me where my problem is and what I need to do to fix it. Thanks.
Drifting
Joined: Jan 2005
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try answering the real questions then... Has the car ever been tuned by you or a shop either with a handheld (preditor diablo) or full tuning software (hptuners/efilive) it sounds like the full throttle shift speeds are too high and not matching up with the RPM's.
Drifting
Joined: Jan 2005
Posts: 1,517
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If it's bone stock it should be shifting at 93mph & 5900 RPM's... Sounds like you need to take it somewhere and have the thing checked out!
You probably won't get any "Helpful" answers since the thing is controlled completely by a computer, there's nothing you can adjust without the tools to do so. I'm looking at a stock tune from a 2004 A4 and the above specs are set for a 2.73 + A4.. do you have a 3.15 by chance? either way, you're not going to do much without a computer and a programmer...
You probably won't get any "Helpful" answers since the thing is controlled completely by a computer, there's nothing you can adjust without the tools to do so. I'm looking at a stock tune from a 2004 A4 and the above specs are set for a 2.73 + A4.. do you have a 3.15 by chance? either way, you're not going to do much without a computer and a programmer...
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From: Kelso Washington
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If it's bone stock it should be shifting at 93mph & 5900 RPM's... Sounds like you need to take it somewhere and have the thing checked out!
You probably won't get any "Helpful" answers since the thing is controlled completely by a computer, there's nothing you can adjust without the tools to do so. I'm looking at a stock tune from a 2004 A4 and the above specs are set for a 2.73 + A4.. do you have a 3.15 by chance? either way, you're not going to do much without a computer and a programmer...
You probably won't get any "Helpful" answers since the thing is controlled completely by a computer, there's nothing you can adjust without the tools to do so. I'm looking at a stock tune from a 2004 A4 and the above specs are set for a 2.73 + A4.. do you have a 3.15 by chance? either way, you're not going to do much without a computer and a programmer...
It's all electronic.....you need to "bust" into the programming.
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Hi mopar75110 -
My wifes 99 A4 coupe with 3:15 perf. ratio will shift into 3rd at full throttle.
Your numbers are quite good for a car that us shifting properly, so you should be pretty happy if you get it shifting for you!
Good luck and best regards -
mqqn
My wifes 99 A4 coupe with 3:15 perf. ratio will shift into 3rd at full throttle.
Your numbers are quite good for a car that us shifting properly, so you should be pretty happy if you get it shifting for you!
Good luck and best regards -
mqqn
Thread Starter
Instructor
Joined: Dec 2007
Posts: 145
Likes: 2
From: Corsicana Texas
Thanks folks for those helpful responses. I talked to a retired GM shop foreman yesterday and he said about the same--I need to have the PCM checked and possibly re-programmed. That's my next step. Thanks again.