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That’s what mine did… under load at around 40-50mph. Flush… change fluid… fixed it. Love the panther content!

Just wanted to say a thank you again to Rich for servicing my Town Car. He sets the bar for what good automotive service and customer service should be.

Mine started doing that. Old school trans service, filter, fluid, and gasket using motorcraft everything resolved the issue. Can't even feel it shift anymore. Just like I like it.

Great info..great video... With out an advanced scan tool, the DYI little guy operator can tap the brake pedal with his left foot to unlock the converter for 3 seconds to isolate/diagnose, with your right foot still on the gas, during the shuddering fits....If the shuddering goes away--its the converter/trans. If the shuddering speeds up-it is usually an ignition component... 95% of these are fixed by servicing the transmission, drop the pan, new filter, 5 quarts of new Mercon V(2009+ LV), reuse the OEM pan gasket. If it was serviced in the past 20,000 miles- you can add a friction modifier to the transmission fluid($7-$10).... Drop the pan every 45,000 miles to avoid this all. The torque converter drain plug was deleted near the end of the 2002 model year cars on the Panthers. The dash cluster flicker on the 03-05 is simple cold solder joints need re-soldered... easy fix.. but you have to remove the cluster and dismantle it. beautiful 2003!!!

🇺🇸❇⚓🥂🍾🥂⚓❇🇨🇦.....Oh once again that classic Panther Lincoln interior & dashboard is a work of art I must say sir/senor!....

I've had a dirty injector make the vehicle misfire (feel like a shutter) under a load. For instance at a red light ,with your foot on the brake. But ,you obviously nailed the diagnosis. Hopefully you saved the tranny in time.

Nice diag tool! Amazing what lack of trans service can do. 🙂🐶🐕

I don't know why people just don't follow the maintenance schedule. It just keeps your vehicle safe and running longer

Oh yeah I remember doing lots of tranny flushes/filters on these, if you hit the OD switch on the column and the shudder stops its usually a sign you need some new fluid! I miss the old ones with a torque converter drain plug! This was back in the days when we had the Star tester...it was shaped like a big T...not many of the old mechanics knew how to use it or even wanted to use it 😆

I remember those days when I worked with the Ford trans engineers. I was and am so afraid when it comes to torque converters with controlled slip for OBDII misfire capabilities. Were the owners going to use tow/haul mode properly or OD properly? Were the owners going to change their spark plugs before misfire? Would they recognize misfire? Would they change their trans fluid? I am even more afraid of counterfeit or so-called "universal" ATF fluids. There is a reason why ZF fluid is $18 and Valvoline "just as good" is 1/3 the price. It ain't the same fluid, not even close. In development I could tell when the ignition system or trans fluid were showing problems, but I am a certified driveability engineer (whatever that means?). My conspiracy theory Uncle would damage his vehicle, because trans fluid changes and ignition maintenance are scams. There ain't no reason for $18 trans fluid. Nooooo! There are reasons for this. He would save $60 and ruin $3k in a trans rebuild and new converter. The days of Dex/Merc fluids are long gone. Sadly, the owner's manuals lie. It is not a lifetime trans fluid, nor are those 100k spark plugs. Here is where I get paranoid. If I take my car or SUV to the dealer or an independent shop, will they use the correct trans fluid, or will they use a "universal" or "just as good" fluid? I have no idea as a customer. My paranoia is justified? I keep ZF, AISIN, Chrysler, Ford, and GM trans fluids in stock at home, so I know exactly what fluid is going in. The 50k trans service on a ZF may be $150, and an AISIN service with SP4 may be half that cost. There is no way I am destroying a trans with a universal fluid from AutoZone or taking my chance at Jiffy Lube.

Got the brakes done and an AC changeover upgrade done on my 84 TBird today. 950 bucks.

My wifes uncles Crown Vic will do that at lower speeds. When he pushes the OD off switch, it goes away.

Shudder Fix red tube works great.

It’s a cluster ****. Couldn’t resist!

The RWD T-Birds and Cougars in the mid 90s had this issue and it would start around 50-55K miles. I had a 96 Cougar with the 4.6. The torque converter on those transmissions had a drain plug and the housing had an access port where you could manually turn the transmission to get the drain plug aligned, which allowed the torque converter to be drained. That, along with dropping the pan and filter required about 10-11 quarts of Mercon V to refill. The wife's 2017 Escape is making a similar shudder. I was tempted to try a fluid change; however, the transmission tech at my local Ford dealer says it needs a transmission overhaul or replacement. I'm now in wait mode, and don't want to touch the fluid for fear of making things worse.

Transmissions need to have all of the fluid changed. When you change the engine oil you don’t change half and leave half old in there . Also on this car it need the transmission filter changed and pan and magnet cleaned

I have the topdon Phoenix plus I love this tools

Great videos. Keep the good work. I see you are using Topdon Phoenix lite 2. Any pros and cons about the scan tool? I have been on the market for a scan tool looking into this scan tool. How much are the updates? I seen on a video of this tool someone commented that if you don't keep it updated you lose Bi-Directional capabilites. Thanks in advance.

I recently dumped my fluid out my 4r70w and added in a 5 qt new Valvoline max life might change the filter next year and do the fluid too my transmission seems ok most days some days it'll rev up till it catches 1st gear from a stop to a go

As paramedic this car has that WTF ECG rhythm lol

A five speed swap would fix any tranny issues 🤔

Excellent and awesome video !!!

There was a TSB for this very thing in the late 90’s

Oh man wish I had seen this two days ago just ordered mine for $799 I could have given you a bump

I'm having a similar issue with my 03 Town Car, it shutters between 20-45mph. I did clean the mass air flow sensor because it was causing the engine to stall but seems ok now. I'm thinking plugs I should change as well as a trans flush from what you did in this video. I might just change it fully, do not have that machine. Also did you silicone the pan or gasket?

Morel of the story ( FOR GODS SAKE , CHANGE THE FULIDS IN YOUR CAR ) from what I’m hearing that trans fluid was 19 years old ! Why on earth would they not get the trans serviced at least once 19 years ?????…….. Thanks Rich !

How many graphs can you show at once on your Phoenix Lite 2. I have seen some more expensive ones like the Thinktool ProS show as many as 12 at once. PS Rich a car at 86K miles in my book is not far from new. I have changed my gm fluid in my 4T65E using generic automatic fluid (dex/merc) and have had no problems. Have you had to use factory fluids or have you been able to use generic fluids? Thanks for the video.

Do you recommend a full fluid change? Like full capacity fluid change + filter ? i've been hearing some old fluid should be left in.

I can read my PCM live data it mentions torque converter slip and actual too

Can the tool record the graph data too

Would a 4r70w transmission do this at all mines not doing it yet but I'm worried

My 99 was shuttering and it ended up being the plug coils.

■▪□▪~》Kinda like design & engineering/problem solving wow