05 QC Tranny Problem after 15k

[ottoman]

Any ideas or experiences on this one pls!

After doing the 15k service on my QC auto transmission I noticed that shifts into second were erratic (two step, jerky) when accelerating slowly in traffic or parking lot type situations. Everything else seems okay when accelerating harder, say with more than 1,500 rpm.

Went to DC dealer, they did a warranty replacement of a governer sensor and transducer (solenoid 8059043, transducer 21030410). It improved but still the shift into second at low acceleration is jumpy and seems to be getting worse. This is my daily driver so it sees a lot of low acceleration shifts.

Going back to the dealer after the long weekend ... any thoughts would be appreciated.

 

[fast fred]

yea i had the erratic shift at low speed and then a little slip in 2nd.on hard shifting and then it just let go it would not move so a tow truck was called and then i was at the dealer getting my trans rebuilt....o5 Q C auto...but i do have a heavy foot that i'm sure helped....

 

[rottenronnie]

Any ideas or experiences on this one pls!

After doing the 15k service on my QC auto transmission I noticed that shifts into second were erratic (two step, jerky) when accelerating slowly in traffic or parking lot type situations. Everything else seems okay when accelerating harder, say with more than 1,500 rpm.

Went to DC dealer, they did a warranty replacement of a governer sensor and transducer (solenoid 8059043, transducer 21030410). It improved but still the shift into second at low acceleration is jumpy and seems to be getting worse. This is my daily driver so it sees a lot of low acceleration shifts.

Going back to the dealer after the long weekend ... any thoughts would be appreciated.

Mine went through the EXACT thing you are describing shortly after a power flush at 32,000 miles. The dealer replaced the valve body but found the kickdown linkage was way out of adjustment. Personally, I think it was more that than the valve body but it does work properly now.

Until it is fixed, pull the selector into 1 or 2 when you are taking off from a stop then manually shift it and it will stop doing the 1-2-1-2 thing.

 

[Annu Kumar]

Thank god somebody has the same problem as me. I only got 5500 miles on mine and it upshifts way too soon. does not redline like it used to do:dontknow: Any suggestions and cures

 

[TheMoparConnection]

the 1-2 2-1 shift is normal between a light accel between 13.5 mph and 18.5mph. you will never completely eliminate that shift pattern. with light throttle pressure the trans is to shift at 13.5 mph ie.. if your in traffic (thats where you will notice it the most), you are going to fast for 1st gear and not fast enough for 2nd...hence why you get the 1-2,2-1 shift...

Annu--you have a different issue... yours sounds like a throttle pressure cable way out of adjustment.

 

[rottenronnie]

the 1-2 2-1 shift is normal between a light accel between 13.5 mph and 18.5mph. you will never completely eliminate that shift pattern. with light throttle pressure the trans is to shift at 13.5 mph ie.. if your in traffic (thats where you will notice it the most), you are going to fast for 1st gear and not fast enough for 2nd...hence why you get the 1-2,2-1 shift...

Annu--you have a different issue... yours sounds like a throttle pressure cable way out of adjustment.

To explain further- The tranny NEVER used to do what I am trying to describe until shortly after it was serviced. It was far from normal. If it did operate like that all the time, no one would want to drive the vehicle, it was relatively violent and it was an obvious problem.

I think I know what you mean and on occasion, the transmission can't decide what gear it should be in. It probably does happen around 13.5 m.p.h. as you say but I have never really looked at the speedo when it was doing it.
It was suggested it was a Stage 2 thing in my case but it was exactly the same with the stock ecu. It was always fine with a bit heavier throttle and, as I mentioned, quit doing it completely once the lever was pulled into 1st or 2nd when taking off at very light throttle from a standstill.

It is fixed now and that's the main thing.

 

[Annu Kumar]

annu----try this

ADJUSTMENT PROCEDURE

1.Turn ignition switch to OFF position.
2.Remove air cleaner if necessary.
3.Disconnect cable end (3)(Throttle Valve Cable at Throttle Linkage) from attachment stud on throttle lever (1). Carefully slide cable off stud. Do not pry or pull cable off.
4.Verify that transmission throttle lever is in fully closed position. Then be sure lever on throttle body is at curb idle position.
5.Pry the T.V. cable lock (A) into the UP position. This will unlock the cable and allow for readjustment.
6.Apply just enough tension on the T.V. cable (B) to remove any slack in the cable. Pulling too tight will cause the T.V. lever on the transmission to move out of its idle position, which will result in an incorrect T.V. cable
7.Adjustment. Slide the sheath of the T.V. cable (D) back and forth until the centerlines of the T.V. cable end (B) and the throttle bell crank lever (C) are aligned within one millimeter (1mm).
8.While holding the T.V. cable in the set position push the T.V. cable lock (A) into the down position. This will lock the present T.V. cable adjustment.
NOTE: Be sure that as the cable is pulled forward and centered on the throttle lever stud, the cable housing moves smoothly with the cable. Due to the angle at which the cable housing enters the spring housing, the cable housing may bind slightly and create an incorrect adjustment.

9.Reconnect the T.V. cable (B) to the throttle bellcrank lever (C).
10.Check cable adjustment. Verify transmission throttle lever and lever on throttle body move simultaneously.

View attachment 18380

Robert Your assuming I can do this I will take these Intructions and have the Viper tech take a Look:rock: Robert Man Good Info:rock: Greatly appreciate it very much

 

[Annu Kumar]

To explain further- The tranny NEVER used to do what I am trying to describe until shortly after it was serviced. It was far from normal. If it did operate like that all the time, no one would want to drive the vehicle, it was relatively violent and it was an obvious problem.

I think I know what you mean and on occasion, the transmission can't decide what gear it should be in. It probably does happen around 13.5 m.p.h. as you say but I have never really looked at the speedo when it was doing it.
It was suggested it was a Stage 2 thing in my case but it was exactly the same with the stock ecu. It was always fine with a bit heavier throttle and, as I mentioned, quit doing it completely once the lever was pulled into 1st or 2nd when taking off at very light throttle from a standstill.

It is fixed now and that's the main thing.

So ronnie If I do what Robert told me It will fix the problem and i WILL get Crisp redline shifts right???

 

[blackviper]

Mine use to do it until I adjusted the kick down linkage. It shifts pretty hard into second but it did away with the gear hunting. Its all good as long as you can deal with the shift into second.

 

[rottenronnie]

So ronnie If I do what Robert told me It will fix the problem and i WILL get Crisp redline shifts right???

I am not a tranny guy but hopefully it will work for you.

 

[Black1]

Mine slips all OVER the place...... :dontknow: Always has.

That's why I'm getting rid of the QC and (hopefully) getting a RC, or another vehicle all-together. :dontknow:

 

[eddie102870]

hey fellas mine started doing this when i installed the roe, i assume it because we moved thelinkages from stock location . shifts hard in low gears and cant find correct gear to stay in unless i get into it at least half throttle. will try this procedure and let yall know how it turns out.

 

[ottoman]

Thanks guys, sadly I am not alone!
I will try to do the kickdown linkage myself, just to rule it out. Ronnie, when you said valve body ... what valve is that?
I am curious why this seems to happen after a fluid & filter change. Why would a linkage be affected. Mine started acting up right after the change. It suggest something internal .... will keep you posted.

 

[rottenronnie]

Thanks guys, sadly I am not alone!
I will try to do the kickdown linkage myself, just to rule it out. Ronnie, when you said valve body ... what valve is that?
I am curious why this seems to happen after a fluid & filter change. Why would a linkage be affected. Mine started acting up right after the change. It suggest something internal .... will keep you posted.

The valve body is the "brains of the outfit" and sits just above the transmission filter inside the pan. It is a fairly large casting with numerous springs, checks valves and now electronic controls that, for the most part, redirect fluid and allows shifts and gear selections, etc. to occur.

Some of the passages inside are quite small. One of the WORST things someone can do is to take a high mileage vehicle that hasn't had the auto trans serviced in a LONG time (never?) and service it. The new fluid is high in detergent and roars around cleaning and scrubbing until debris from the bands etc; gets loosened and plugs some of these passages. Ultimately this will lead to failure.

I have been told that the trannys in our trucks our reasonably tough but need a little help in the band and applying strut areas. They aren't a performance piece but I guess with a little help, they work o.k.

Like I said I am not a tranny guy, Hope some of this helps...

 

[6pakattack]

I'm not a mechanic by any means,but when we changed my intake manifold,we disconnected the shifter detent cables !!!When we reinstalled it,my shift points were much higher.On the cable,there are little bump kinda indents.The the we did was adjust that detent,and it's back shifting properly !!!I'm going to be playing a little more to get it exactly where "I" want it to shift !!!:rock: :rock:

 

[eddie102870]

i did this and i can tell ya it helps to have it adjusted right. i thought i was fixin to have to buy a tranny. from a dig if i got on it all the way when it shifted from 2nd to 3rd about halfway through 3rd it acted like it was trying to come out of 3rd before i adjusted it. now it does fine. scared the chit out of me. thought i was gonna have to spend some more money.

 

[ottoman]

Just to finish my story ... had the valve body replaced under warranty and its back to normal now No explanations on why the valve body needed changing nor would they let me keep the old one to take apart etc. Maybe I will change the fluid earlier than 15k next time.

 

[Black1]

Just messed with the throttle valve cable on mine... It took a few trys, and some test runs. But, now she is shifting PERFECT! :rock: Thank GOD! I thought I had bigger problems.

Annu.... Gimme a sec. and I will take a pic of where this thing is, so you can try it. :burnout:

 

[Black1]

OK, Annu...

The cable in question is right on the throttle linkage. I'm pointing to it.

You need to un-clip it from the linkage, then (carefully) remove the white clip. You do this by prying it (lightly) on the top and bottom, and sliding it to the left.

Here is a overall view...

And one more... just 'cause I can.

 

[Annu Kumar]

OK, Annu...

The cable in question is right on the throttle linkage. I'm pointing to it.

You need to un-clip it from the linkage, then (carefully) remove the white clip. You do this by prying it (lightly) on the top and bottom, and sliding it to the left.

Here is a overall view...

And one more... just 'cause I can.

Awesome:rock: :rock: Now I will have Sonya Call you and have Phone sex