A4 Problem
11-18-2006, 05:35 PM
#1
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A4 Problem Ok racing some f-in GT an there goes my Tranny mount. 2000 Z28 A4, so i spent half the day trying to get the correct mount then an hour replacing it. Drive down the street an the trans start slipping. 1st shifts at a high RPM, an it will not shift out of second. Pulled diagnostics on it and it threw the codes for o2 Sensor, Both left and right bank, thats fixed. Threw a code also that read Shift Solenoid "A" stuck off....? Need new tranny????????
Last edited by 2ThouZ28; 11-18-2006 at 07:10 PM.
11-18-2006, 07:23 PM
#4
Are you sure that you only have first and second? It sounds more like you trans is stuck in limp mode do to the solenoid code. This would be more like starting out in third gear. The solenoids that this code is referring to are located in the rear of the valve body and look the same. They can be replaced pretty easy. I do sell them if you want to try this first. Here is a pic of the solenoids.
11-18-2006, 07:41 PM
#5
I would try the solenoid first as vince says ,That code sets when the solenoid is commanded on but the ecm does not se the apropriate feedback from the manifold presure switch even though the solenoid is electrically sound, There are a few other things that can cause the code they include a stuck valve and a bad manifold presure switch.
But the solinoid would be the most likley first step , While your in there take a close look at whats in the pan also.
But the solinoid would be the most likley first step , While your in there take a close look at whats in the pan also.
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11-18-2006, 09:19 PM
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i start out in overdrive i get what i assume to be first but i cant put any power on it or it will just slip and can kinda work my way up an it will finally shift at 3500ish then when its in "second" it wont ever shift and around 3000rpm (45mph) it starts to vibrate on the center console alot......
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11-20-2006, 05:03 PM
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ok, had to order the on/off solenoid so i still dont have it in. also bought new filter an fluid. drove down the street to see exactly what it was doing but now when you put it in to drive it kicks real hard, and it will hardly move now..... still say to change the solenoid first before?
11-21-2006, 04:43 PM
#11
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Ok BEFORE I do this solenoid which I plan on doin tonight, I only bought the on/off solenoid cuz that was the only one throwin a code an i ran out of cash while i was there. which of the two solenoids is it? afraid i will b e under there an not know the two apart from each other.
11-21-2006, 07:31 PM
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the pan is off an the filter is off, bought new filter an gaskets duh but waiting for a reply on which one is the on/off solenoid or are they both the same? In the pan, there was a normal amount of "flakes" nothin really it was actualy perty clean besides the tranny fluid.....
11-21-2006, 09:15 PM
#18
The solenoid on the right of this picture is the A solenoid. However the A solenoid is for the 1-2 shift and not the 2-3 shift. I would replace both solenoids in most cases but this has me puzzeled unless the trans is already hurt. Let us know what you find.