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#1
10-03-2008, 04:48 PM
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722.6 transmission issue
Benz: 1997 C230 , 722.6 transmission. 140k miles, tranny fluid changed at 70K
Issue: Intermittently.. while I am stopped, brake on, and the car is in Drive .. there will be a "lurch".. small nudge from the transmission like it wants to go. The rpms drop slightly... I've gone to placing the transmission selector in neutral while stopped > and it still displays this nudge behaviour.. Torque converter?... the transmission shifts just fine in normal driving mode.. it just has this problem while stopped at a light/stop sign/heavy stop/go traffic... ideas???
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Kim Langley 97 C-230 80 911 SC 73 2002Tii 
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#2
10-03-2008, 09:24 PM
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See if there is a difference if you drive it in the W or S mode (the switch on the shifter)
Gilly
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Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)
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#3
10-03-2008, 11:42 PM
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Gilly
will give it a try
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Kim Langley 97 C-230 80 911 SC 73 2002Tii
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#4
10-04-2008, 11:51 AM
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idle issue w/ w202
that is most likely your air pump doing a "self test" my 97 c230 ( c2durty) does it only at stop lights where you'd think it is gonna "die" but it never has for the last 20k, i bet it revs down to like 400rpm for a few seconds and then right back up to 750 rpms. On a nice day with windows open you can hear the air pump clicking from the front of the car. hope this helps.
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#5
10-06-2008, 10:57 AM
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I switched from the "S" mode to the "W" mode and the "hiccup" is still there.
500selproud : it acts exactly as you say .. rpms drop from normal to around 400 > and then come back up.. it's like the car hiccups.. total random... only while stopped...
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Kim Langley 97 C-230 80 911 SC 73 2002Tii
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#6
10-07-2008, 12:19 AM
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do you think it's poss that one of the spark plugs hiccups[plug,wire or coil]and this then puts more torque on the trans?it's only a 4 banger and one plug could make that difference.
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David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg
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#7
10-07-2008, 05:09 AM
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Quote:
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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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#8
10-13-2008, 11:49 AM
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mpolli: correct .. only while stopped car is warm..
so > what is the fix?? new air pump?? $$$$ is there a particular sub-system of the air pump that is faulty? what is the effect/cost/danger if I just live with it.. ignore it and put up with the malfunction. ?? I took it in yestrday for emissions inspection> and it passed > so whatever it is doing > it is not messing up it's emissions function. advise>??
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Kim Langley 97 C-230 80 911 SC 73 2002Tii
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