1995 4.6 Cougar Not Shifting at WOT - TCCoA Forums
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post #1 of 12 (permalink) Old 07-25-2016, 05:34 PM Thread Starter
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1995 4.6 Cougar Not Shifting at WOT

I recently got a 4.6 Cougar and it seems to have a few issues. When I give it full throttle from a standstill, it will studder getting to about 4500 RPM and shift. Also if I'm moving then try to kick it down, it takes longer than expecting and repeats shifting issue. I have full transmission fluid. Checked when running. It didn't smell burnt. From what I've read it could be the TPS. Any input?
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post #2 of 12 (permalink) Old 07-27-2016, 01:30 AM
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Time for a 5 speed swap.
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post #3 of 12 (permalink) Old 07-27-2016, 02:28 AM Thread Starter
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Lol maybe. I'm testing the TPS tomorrow. and if it needs a new one, it will live another day as a slushbox. If it needs serious attention then I'm putting in a mechanic in a bottle and saving up for a swap.

My Sig. broke and I must buy a new one from Sears...

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post #4 of 12 (permalink) Old 07-28-2016, 01:25 AM
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Quote:
Originally Posted by jdm3gee View Post
Lol maybe. I'm testing the TPS tomorrow. and if it needs a new one, it will live another day as a slushbox. If it needs serious attention then I'm putting in a mechanic in a bottle and saving up for a swap.
Mechanic in a bottle wont' fix a broken accumulator spring. Save up for the swap, or be lame and fix the broken 1-2 accumulator spring that's sitting in your transmission valve body.



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post #5 of 12 (permalink) Old 07-28-2016, 02:01 AM Thread Starter
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Mechanic in a bottle wont' fix a broken accumulator spring. Save up for the swap, or be lame and fix the broken 1-2 accumulator spring that's sitting in your transmission valve body.
I don't think it's that... I couldn't find my multimeter so I did a test another way. In park and neutral, I gradually gave the car more throttle until full and at about 75% until WOT, the revs dropped to 2.5k rpm. From that, I'm fairly certain it's the TPS. But I will do a Jmod when I go to switch out the fluid after I get a job and fix the other issues like my oil in coolant, oil adapter i hope. And my various suspension clunks, Probably needs new shocks in the back for starters.

I will look into what goes into a 5Speed swap. I believe I would go with a T-45 if I remember right.

My Sig. broke and I must buy a new one from Sears...

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post #6 of 12 (permalink) Old 07-28-2016, 02:05 PM
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Quote:
Originally Posted by jdm3gee View Post
I don't think it's that... I couldn't find my multimeter so I did a test another way. In park and neutral, I gradually gave the car more throttle until full and at about 75% until WOT, the revs dropped to 2.5k rpm. From that, I'm fairly certain it's the TPS. But I will do a Jmod when I go to switch out the fluid after I get a job and fix the other issues like my oil in coolant, oil adapter i hope. And my various suspension clunks, Probably needs new shocks in the back for starters.

I will look into what goes into a 5Speed swap. I believe I would go with a T-45 if I remember right.
Avoid the T-45 like the plague, it's an archaic design with a lot of work for minimal reward compared to the 01+ TR-3650 or the 05+ TR-3650.



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post #7 of 12 (permalink) Old 07-28-2016, 02:35 PM
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Or you could go with the TR6060.

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post #8 of 12 (permalink) Old 07-28-2016, 02:40 PM
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Quote:
Originally Posted by Black_Cat View Post
Avoid the T-45 like the plague, it's an archaic design with a lot of work for minimal reward compared to the 01+ TR-3650 or the 05+ TR-3650.
Archaic how? I personally went to the TR3650 in lieu of the T45 for only 3 reasons - .62 overdrive(03-04 only), it had less miles than the T45 I also had, and MY T45 had paper lined blockers rather than carbon fiber which the late T45s had and all TR3650s have(except on 1-2)

The Borg Warner designed T45 has it all over the Tremec design for the single rail shifter mechanism, rather than the three rail system Tremec uses, which is textbook archaic. The T56 less an extra overdrive is essentially the same design as the T-45, and Tremec's TR6060 is essentially an updated T56 - they could have easily added an extra gear to the TR3650, with 1-4+R housed in the main case, both overdrives could have been housed in a longer extension housing, but they didn't do that - Because the Borg Warner design is more modern. Not to mention the fact that the 1-2 blockers are brass lined on the TR3650 rather than carbon fiber on the late T45s.

The T45 may be a lot of things, but archaic isn't one of them. The only bad part about the T45 is the weak shift forks and the Rube Goldberg reverse mechanism. But the 01-04 TR3650 is plagued with similar problems - still weak forks, weak roll pins, shitty syncros(on 01-02s), and incorrect fill plug location. Really there's no clear choice IMO, just gotta do your homework on whichever one you find.

-Matt
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post #9 of 12 (permalink) Old 07-28-2016, 04:00 PM
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Really there's no clear choice IMO, just gotta do your homework on whichever one you find.
The choice is pretty simple. For ease of installation, go with the 05+ TR3650. For the cheapest way to get a 5-speed in the car, if you can do some fab work yourself and don't mind going junkyarding, go with the T45. With some parts hunting, you can do a complete T45 swap, including tune, for under $1000, which is about what it will cost just for the actual 05+ transmission, and then you need to spend money on the driveshaft, speedcal, tune, clutch, flywheel, etc.

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post #10 of 12 (permalink) Old 07-28-2016, 10:40 PM Thread Starter
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The choice is pretty simple. For ease of installation, go with the 05+ TR3650. For the cheapest way to get a 5-speed in the car, if you can do some fab work yourself and don't mind going junkyarding, go with the T45. With some parts hunting, you can do a complete T45 swap, including tune, for under $1000, which is about what it will cost just for the actual 05+ transmission, and then you need to spend money on the driveshaft, speedcal, tune, clutch, flywheel, etc.
Okay so I don't have just one option for a swap. nice. If anything, I'm going for ease of install with a little bit of fab if needed. I'll keep a lookout for all the tranny parts but I'll keep the autobox since it just has a shudder and the TPS issue.

My Sig. broke and I must buy a new one from Sears...

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post #11 of 12 (permalink) Old 07-29-2016, 12:36 AM
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Quote:
Originally Posted by MadMikeyL View Post
The choice is pretty simple. For ease of installation, go with the 05+ TR3650. For the cheapest way to get a 5-speed in the car, if you can do some fab work yourself and don't mind going junkyarding, go with the T45. With some parts hunting, you can do a complete T45 swap, including tune, for under $1000, which is about what it will cost just for the actual 05+ transmission, and then you need to spend money on the driveshaft, speedcal, tune, clutch, flywheel, etc.
You'd need a Speedcal for the 99-00 T45 as well, those went to a magnetic reluctor wheel, though if you can find someone parting an older one the VSS style extension housing and VSS gear can be swapped directly between cases/output shafts, but that may not be cost effective in comparison.

The Driveshaft and internal slave was the big deal breaker for the 05+ setup for me. My entire swap barely cost more than what the custom driveshaft would alone. But yeah that's definitely the ideal swap, especially since the bugs were largely worked out of the TR3650 by 05, lots more safe bets on the used market, even if at a premium.

-Matt
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post #12 of 12 (permalink) Old 08-14-2016, 12:15 AM Thread Starter
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Status Update: The Cougar shifts properly now. It was the MAF sensor causing the issue. I unplugged it and gave it and the throttle body a cleaning with one of those kits from Wally World. I reset the CEL code and so far after romping on it, the code for bank 2 lean is gone and it shifts at red line when floored. I still have my transmission shudder but I'm going to change the fluid to Mercon5 and see if it gets fixed then. At the same time, a J-Mod will be done. If I still get shudder, I'll throw in some Dr. Tranny Shudder Fix.

My Sig. broke and I must buy a new one from Sears...

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