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94 Ford explorer vibration shutter under load Cannot find Fix?

Hello. I have a 94 ford explorer. 182,000 miles. Original owner. Maintained very well. Problem: You can be driving down the road with your foot off the gas at any speed and no vibration. When you apply power or load the Drive train vibrates the whole car and with a very low pitched rumble. At 65 - 75 it is very noticible inside the cabin (loud) Problem started as a slipping transmision gears. That problem changed from slipping to a vibration or a shutter under load at 45 mph to 75 mph. The transmision shop did find a damaged tranny. They rebuilt it and the torque converter. Vibration continued. The balancer has been changed. The drive shaft was taken out and tested to be true and balanced. The fly wheel was checked. I used the same tranny shop at 75,000 miles for a rebuilt and I trust the shop owner but he and his mechanics are stumped. Please help. Thank you

Reply to
spdsl
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The conditions you describe sound like converter shudder. You say the shop rebuilt the converter. I tend to question whether they rebuilt it or flushed. Some shops confuse the two. Rebuilding a converter requires some expensive equipment and most shops just install a factory rebuilt converter. If they simply flushed it when they built the trans, then you likely still have the same old worn out burned clutch converter. Generally, a rebuilt converter should be installed along with a trans rebuild.

Either Trasn Surgeon or Gary Glazener in this or another group should have some good advice for you on this.

Good luck Lugnut

Reply to
lugnut

lugnut wrote in news: snipped-for-privacy@4ax.com:

Good call. The tranny shop had not rebuilt the tranny or converter. I went to the shop too pick up the car and they said no charge. I asked them if they rebuilt the trans and converter. They said no. The tranny and converter were working just fine and they did not want to drop the tranny and charge me for labor. I explained to them that I wanted to fix the old explorer and they should go ahead and do exploratory surgery. Case solved. Ujoints replaced and the spacer a 15 dollar part was badly worn and slinging around the shaft. Tranny seals replaced and the convertor pump rebuilt. Who knows?? Explorer back on the road. Thank you.

Reply to
spdsl

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