Problems with 4R70W Auto Transmission
08-11-2013, 06:49 PM
#1
Thread Starter
Join Date: Feb 2005
Posts: 5
Problems with 4R70W Auto Transmission
Hello,
I have a 1997 Ford Thunderbird 4.6L V8 with the standard 4-speed 4R70W automatic transmission. I just bought the car and it has a total of 51,800 miles on it. The day after I bought it I had the ATF filter and fluid changed. Big O Tires used Valvoline Maxlife ATF. My previous car was also a '97 TBird; they used the same ATF and it worked out fine.
The ATF fluid has the correct level, color, and smell. On a level surface when I am on the road and I release the accelerator, the car slows by a bit too much, almost as though the brakes are slightly being applied. When I am coasting or at a full stop and I press the accelerator, there is a slight, split second pause, then the car accelerates. When I am stopped and in Drive, the engine runs slightly rough and the transmission makes a slight turning noise. In Park, the engine runs smoothly.
My previous '97 TBird did not do this. Can someone tell me what the problem is? Is it a solenoid or a vacuum sensor?
I have a 1997 Ford Thunderbird 4.6L V8 with the standard 4-speed 4R70W automatic transmission. I just bought the car and it has a total of 51,800 miles on it. The day after I bought it I had the ATF filter and fluid changed. Big O Tires used Valvoline Maxlife ATF. My previous car was also a '97 TBird; they used the same ATF and it worked out fine.
The ATF fluid has the correct level, color, and smell. On a level surface when I am on the road and I release the accelerator, the car slows by a bit too much, almost as though the brakes are slightly being applied. When I am coasting or at a full stop and I press the accelerator, there is a slight, split second pause, then the car accelerates. When I am stopped and in Drive, the engine runs slightly rough and the transmission makes a slight turning noise. In Park, the engine runs smoothly.
My previous '97 TBird did not do this. Can someone tell me what the problem is? Is it a solenoid or a vacuum sensor?
08-14-2013, 03:40 PM
#3
1st Gear Member
Join Date: Mar 2013
Location: California
Posts: 91
"Recommended for use where DEXRON, DEXRON II, III and VI, Toyota T-IV and WS, MERCONŽ, MERCONŽ SP and LV, Allison TES 389, Nissan Matic-D, Matic-J and Matic-K, Honda Z-1 (except CVT), Mercedes NAG-1, Mitsubishi Diamond SP-II and SP-III and many others are required."
SOURCE
The 4R70W transmission uses Mercon V, and as you can see, that Valvoline Maxlife ATF oil doesn't say you can use it for Mercon V transmissions.
SOURCE
The 4R70W transmission uses Mercon V, and as you can see, that Valvoline Maxlife ATF oil doesn't say you can use it for Mercon V transmissions.
08-14-2013, 09:48 PM
#4
Thread Starter
Join Date: Feb 2005
Posts: 5
"Recommended for use where DEXRON, DEXRON II, III and VI, Toyota T-IV and WS, MERCONŽ, MERCONŽ SP and LV, Allison TES 389, Nissan Matic-D, Matic-J and Matic-K, Honda Z-1 (except CVT), Mercedes NAG-1, Mitsubishi Diamond SP-II and SP-III and many others are required."
SOURCE
The 4R70W transmission uses Mercon V, and as you can see, that Valvoline Maxlife ATF oil doesn't say you can use it for Mercon V transmissions.
SOURCE
The 4R70W transmission uses Mercon V, and as you can see, that Valvoline Maxlife ATF oil doesn't say you can use it for Mercon V transmissions.
"Suitable for use in:
Ford: MERCONŽ, MERCONŽV, MERCONŽSP and MERCONŽLV applications"
However, I will probably have it flushed at a Ford Dealership with Mercon V. I went to a transmission guy today and he said there was nothing wrong with the car. I'll go to one more guy who's been in the biz for 30 years and see what he says.
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