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High REV before shifting
Posted 27 September 2003 - 11:55 PM
Here is the problem: As soon as the engine reaches operating temperature, it has shifting problem going 1st to 2nd gear. From a stop and go situation, I have to rev the engine up to 3,500-4,000 RPM before it shifts. Also, the speed has to reach 20 MPH before shifting occurs. This is based on moderate to mild (or vice versa) acceleration. If I press the pedal very soft and let the vehicle reaches 20 MPH very slowly, it shifts fine. But in traffic situation, I just don't want the person behind honking his horn because I just couldn't keep up with the traffic ahead of me.
From driving the vehicle and making a wild guess, I think it has something to do with the speed and/or speed cable not being registered correctly with the CPU. This car has never been involved in any racing activity or wreckless driving. It just started having this weird behavior beginning this summer '03. I don't remember having this problem in the past prior to this summer.
Once speed is above 20 MPH, no problem with shifting and there is no problem with 2nd gear up. Someone has suggested resetting the CPU or ECU (whatever) on my other posted (on the former forum) but I can't find fuse 16 as stated.
I hope I make sense here as I am really in need of finding out what's wrong (if anything at all). My hope is that it is not as serious or bad as I think it is.
Thanks in advance!
Posted 28 September 2003 - 12:34 AM
I think you should start with replacing the transmission oil and filter. Sounds like you have low oil pressure, and this could be due to tired oil. Make sure you get the quality recommended by the handbook. If you don't do the work yourself, make sure that the TRANSMISSION oil and filter are replaced. A lot of mechanics will confuse the engine oil drain plug with the one for the transmission, because they are not used to Subarus.
Posted 28 September 2003 - 07:31 AM
Posted 28 September 2003 - 08:03 AM
Posted 28 September 2003 - 09:51 AM
I have had 2 cars with exactly your condition come to me from the dealership here locally....
Get a timing light....stick it on # 1 Plug wire.....With someone holding the brakes for you, put the car in gear and Romp the throttle short and Quickly.....
The last Car I had do this was bad enough I could do it with it in park....
Run throttle up hard like under acceleration.....and it will cut out really bad but very gentle, and it runs ok....
My Money says if you Do this on all 4 plug wires, you'll find 1-2 or 3-4 missfiring under Load.......
Coil Pack is on its Way out....
Here is whats happening.....
At idle, there is Little Load on the Coil....it sparks just fine...
on hard Accelleration, it has to work harder to get the Bang happening....So if it is breaking down, your electrical system can't produce enough amperage to do the job proper...
above about 1800-2000rpm's, the Alternator kicks in and gives it the juice it needs, therefore smoothing out the missfire....and fixing al shifting issues.....
I haven't run into this with a stick shifted car, but both Auto's I did had 1-2 Coil missfireing at Low end.....
Coil Pack runs about $100.00 at the Dealer, and I would Suggest Buying it there...Takes all of about 12 mins to install......
Let me know if this ends up being your Issue, And Let me know if I was wrong.....
Hope it works, John in Oregon.....
Posted 28 September 2003 - 08:24 PM
Posted 28 September 2003 - 09:06 PM
I will keep you guys posted after tomorrow.
Thanks all again!
Posted 10 October 2003 - 12:27 AM
I really wish someone out there have solution so that I won't end up with lots of $$$ fixing this problem.
Please, anybody with a different hint I should try?
Posted 10 October 2003 - 12:59 AM
Posted 12 October 2003 - 08:43 PM
On another note, I just read something about Vehicle Speed Sensors. Could they have something to do with the problem I'm having?
On an experimental testing, if I let go of the gas pedal to let the RPM come down when the speed reaches about 18-20 MPH, and press the gas pedal again, the gear shifts. Although it doesn't everytime, it does help in a way.
Posted 13 October 2003 - 07:50 PM
Looks like nobody has anything to offer anymore. Could this be possible that nobody has anything?
Posted 14 October 2003 - 09:48 PM
My Money says New Coil will cure your Problem......????
Just my outlook on it....
John in Oregon.....
Posted 17 October 2003 - 08:49 PM
Posted 20 October 2003 - 10:30 PM
I'm going to try the junk yard first, though, hopefully to get it for $5-$10 bucks.
Posted 21 October 2003 - 08:08 PM
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