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Discussion Starter #1
Alright guys I need some more help. I am having some kind of weird problem with my car. Is has been like this since I got the car but it only did it once in a blue moon then. It is definatly getting worse and really annoying. I don't even want to drive the car anymore. So here is whats happening:

The car drives and shifts great when it is cold for about 10 minutes. But once it is warmed up I get this terrible 2-3 shift (city driving). If I am cruising at 25-40 while in 3rd and slightly push the gas the car will kinda bog and do this forward/backward motion. It seems like the TC is locked and stays locked. The rpms don't rise like when the car is cold. It just stays at 1100 rpms and does the bogging thing, then I'll push it a bit more and the rpms will jump up, then when I let go it does the forward/backward bog thing again). Kinda feels like the TC is doesn't unlock when it's supposed to. It is not the apten chip because it did this before. So does anyone have any idea what this is??

The 1-2 shift is fine though and I don't use od unless on the highway.

Could it be the TCC solenoid or the TC going bad? Or even worse the tranny going bad?

Wish I had a way to show you guys what's going on. Searched but didn't have much luck.

Thanks!
 

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MaleWhore
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my car does the same thing, it acts fine and the RMPs are happy to go up when i touch the gas pedal when its cold, but they arent as happy when its all warmed up...what i broke it down to is the TC or the TPS, but i havent checked my TPS, which i dont think its the problem at all. what im plannin on doing is saving money for a marauder TC and install that with a cooler and Merc V...i know someone is going to repspond with more experience that me...
 

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It's definitely a TC lockup issue. The stuttering sounds like shudder, but for some reason I don't think thats it. The 96+ cars are much more aggressive with the lockup - they dont unlock as easily as the earlier 94-5s do. TC wear and heat control are probably why. Except for this forward/backward thing, it sounds normal to me. when you let totally out of the throttle then blip it, the EEC sees the sudden change and unlocks the TC. When the car is cold, the EEC keeps the TC unlocked so the trans fluid warms up faster. If your average cold start trip is less than 5 or 6 miles, you may not get it to lockup at all. This is why the mileage will be lower when you make short trips at 55mph vs. long trips at 55mph.

Not knowing the exact programming of the Apten chip, I can't really delve into that stuff. Give Brian a message and see what he thinks, if this is becoming a concern for you.

If you wanted, Swapping in a new TCC and fresh Mercon V couldn't hurt. For the most part though it doesnt sound very bad.
 

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Discussion Starter #4
Well I know the forward/backward motion thing isn't normal because my moms 96 doesn't do it. The jerking is quite aggressive actually. People that ride in my car always ask "hat was that"or "is that normal". It did it just a little bit once in a while back when I gt the car. Now it is just terrible. So it don't sound like a bad tranny right? Hope not, but eventually I plan on upgraded the TC anyways, this is just a reason to upgrade sooner! I think I might install a new TCC solenoid also. So if anyone has an idea be sure to post please.

Thanks!
 

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MaleWhore
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whats TCC stand for? is it expensive?
 

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TCC stand for torque converter clutch (locks and unlocks the converter). The TCC solenoid is on the valve body and controls the clutch. If I remember correctly, the solenoid was about $30 and is a cinch to replace.

Oh, and btw, I had a similar problem with my car about 9 months ago. I changed the TCC solenoid and it was a lot better, but not perfect. I let it go for too long and I think the converter itself was damaged. It is now progressively getting worse. I just ordered a new converter and hopefully it will cure the problem. I'll keep you posted.
 

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The 2-3 shift accumulator piston and springs are po-po (1-2,also), and can cause some wickedly nasty probs, depending where the piston is hung up, how springs are catching.... not too bad to check/ upgrade to 2000/20001 GT specs
good luck
 

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Discussion Starter #8
Leland Jacobson said:
The 2-3 shift accumulator piston and springs are po-po (1-2,also), and can cause some wickedly nasty probs, depending where the piston is hung up, how springs are catching.... not too bad to check/ upgrade to 2000/20001 GT specs
good luck
I did the J-Mod back in the summer, so I don't have a 2-3 accumulater even in it. When I did the J-Mod I was hoping it was a bad 2-3 accum., but I guess it wasn't.
 

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I have the same problem, I tracked mine down to the PCM, for some reason when engine is warm the TCC locks-up in 2nd gear at any speed and stays locked up unless the throttle is pushed hard. The TCC should not lock up until it meets this criteria:
1.) 3rd gear or above
2.) VSS reads 45mph
3.) Engine Warm
4.) TPS steady
5.) if anyone can remember any others please list them

I actually tested all of the wiring, tested the TCC-solenoind and the connectors, did the PCM solenoid test, I followed the ford testing procedures on this and came to the end "PCM should be replaced", I never did it though. I also did a driving test with a DVOM and watched when TCC locks up, and yeah once it hit 10mph and went into second the PCM told the TCC to lock-up (why?, I don't know)
I have temporarily fixed my problem by putting in a switch to control the TCC operation manually, it works good except when I forget to flip it on over 45mph and then the OD light starts to flash.

I'm waiting until I find a cheap used PCM for my California emissions bird (i'm not paying $240 for a new PCM)
 

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MaleWhore
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whats PCM again...sorry not good with these new terms, also where is the TCC selenoid located...thanks....
 

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45mph? mine locks up hard after shifting at 25mph in 3rd gear... going uphill.
 

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smokymance said:
whats PCM again...sorry not good with these new terms, also where is the TCC selenoid located...thanks....
PCM is powertrain control module. It is the computer that controls the drivetrain. The TCC solenoid is located on the valve body next to the shift solenoids. It is immediately visible once you drop the pan and filter.
 

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MaleWhore
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thanks...is there a way to find out if that is gone bad or not without getting the pan dropped...
 

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Discussion Starter #14
Silver95Bird said:
45mph? mine locks up hard after shifting at 25mph in 3rd gear... going uphill.
Yea that succks! I hate it when that happens. Not cool at all, you have to give it like half throttle just to unlock it!
 

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smokymance said:
thanks...is there a way to find out if that is gone bad or not without getting the pan dropped...
You can check the resistance between the TCC and TCC VPWR, after you unplug the transmission's connector it should be 1-3 ohms,
<img src=http://members.tccoa.com/kewlbird/Pin.jpg><br>
(this is pin layout on my 94's transmission, I'm pretty sure your 96's is the same)
 

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MaleWhore
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another stupid question...where would that be located...all the connections and everything...
 

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it's on the right side of the transmission case, you'll see a connector that looks sort of like the drawing, it's really hard to get accessed but it's doable,
 

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Discussion Starter #18
Is there another name for the TCC or something? I looked it up on advance autos website and could only find these: http://www.partsamerica.com/SelectParts.asp?SourceArea=&SourcePage=VehicleEngine&PartType=424&PTSet=A&AAIACarCode=1140590&AAPCarCode=17932&SearchFor=Transmission+Solenoid . Or do I have to purchase it from the dealer or something?

I was thinking about it today, could the TPS possibly cause this issue? I got a few extra bux to spend and want to try and cheaply find the solution to this annoying problem!

It feels like it is getting worse, or it may be just me...

:mad:
 

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Looks like youll need to visit a dealer for that one. There are pics of it at the very end of my article in the WIP forum if youre looking for one.
 

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Tony said:
Is there another name for the TCC or something? I looked it up on advance autos website and could only find these: http://www.partsamerica.com/SelectParts.asp?SourceArea=&SourcePage=VehicleEngine&PartType=424&PTSet=A&AAIACarCode=1140590&AAPCarCode=17932&SearchFor=Transmission+Solenoid . Or do I have to purchase it from the dealer or something?

I was thinking about it today, could the TPS possibly cause this issue? I got a few extra bux to spend and want to try and cheaply find the solution to this annoying problem!

It feels like it is getting worse, or it may be just me...

:mad:
That will be a dealer part only. And yes, the Lock-up problems can be caused by TPS amond other things, I'd suggest having someone check the circuit otherwise It can get very pricey if you throw parts at it, it could be something as little as a grounded wire.......
 
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