I just changed my fluid AGAIN to try to cure some shudder I have been feeling. Unlike the 3-4 upshift shudder, mine seems to come in on the down shift when I go to part throttle at 35-45.
My question is this. I have for the last two trans fluid changes used the synthetic blends rated for both Mercron and Mercron v.
My trans calls for Mercron but I have read posts that it is ok to use these synthetic blends. Has anyone else with this year trans used the synthetics??
I hate to waste $40 worth of fluid but if it is going to make a difference in the shift problem then maybe I should switch it out for Mercron only fluid.
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Black 1997 F-150 4x2 Supercab Flairside with HD tow package, Sunroof.
2002 Lightning headlights.
Steel Horse billet grill with Blade Runner (I just love chrome).
Prestiege air dam.
4.6L with Superchip, K&N Generation II modified to use with Supercharger, Accel Coil Pacs, Troyer fans, Troyer trans cooler, Cat back Exhaust with Flowmaster Super 40 2 1/2" in and Duel 2 1/2" out with 3 1/2 Stainless tips out the back.
S.E.C. Polished alloy wheels, Style 27 (17X8) with 265/70-17 Bridgestone Dueler A/T Revo’s tires. Hellwig 1 7/16 front and 1 1/8 rear bar. Eaton Limited slip, 4.10 Ford Racing gears, TrickFlow rear diff support girdle.
Pioneer head unit with Cerwin-Vega 5x7's all around and Rockford Fosgate Sub in custom box with 300 watt RMS amp "THUMP-THUMP".
I have this transmission and year truck. I just used Mercon fluid for cost reasons. The transmission is shifting and working just fine with the Mercon. I have used synthetics in other vehicles with out problems as well. However, I don't know if it will help you get rid of the problem you are having.
My 97 had the "shudder" bad a few yrs ago under warrenty. The factory service people had the dealer flush & fill with mercon V (after 6 months of other fixes). It's been fine the 25K since. Dealer said use only mercon V.
Well it has improved since the fluid change. There is no other problems with the trans (certainly not enough to have a rebuild). It is a funny shimmy and very hard to duplicate. My truck is WAY out of warrentee so I guess I will live with it for a while.
I read somewhere in one of these post about an additive to help with the trans. Anyone know what that is??
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Black 1997 F-150 4x2 Supercab Flairside with HD tow package, Sunroof.
2002 Lightning headlights.
Steel Horse billet grill with Blade Runner (I just love chrome).
Prestiege air dam.
4.6L with Superchip, K&N Generation II modified to use with Supercharger, Accel Coil Pacs, Troyer fans, Troyer trans cooler, Cat back Exhaust with Flowmaster Super 40 2 1/2" in and Duel 2 1/2" out with 3 1/2 Stainless tips out the back.
S.E.C. Polished alloy wheels, Style 27 (17X8) with 265/70-17 Bridgestone Dueler A/T Revo’s tires. Hellwig 1 7/16 front and 1 1/8 rear bar. Eaton Limited slip, 4.10 Ford Racing gears, TrickFlow rear diff support girdle.
Pioneer head unit with Cerwin-Vega 5x7's all around and Rockford Fosgate Sub in custom box with 300 watt RMS amp "THUMP-THUMP".
Hi,
I put Valvoline DuraBlend ATF fluid (MERCON & MERCON V rated) around a month ago (?) Already did 3000 miles...
I cannot tell that anything has changed since then. No problems what so ever..
I have around 96000 miles on the truck...
Your tranny will be fine with a full synthetic that meets Mercon ratings. I'm using the Valvoline Durablend ATF that meets both with no problems, but it sounds like synthetic is the next idea to get rid of the shudder. Best of luck!
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'99 F150 Supercab Flareside 4x4, 4.6l V8, Auto, 87,000 miles and running strong...
Sold! '97 F150 Supercab Flareside, 2WD, 4.6l V8, Sold at 162,255 miles on the odometer.
I had the same problem in my 97. Took it to the dealer and had them change the fluid with Mercon V. Did you change the filter and also drain the torque converter? After the full tranny service, mine shifts like a charm with no chatter.
Yea, I did the torque converter and changed the filter.
It's kind of hart to explain, it shifts crisp as ever. I have the super chip which makes it shift very nice. It seems to hand up on the down shift...
I'm wondering if there is some kind of servo or something the effects the down shift that needs attention.
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A question for 97 4R70w owners
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