Rick's Free Auto Repair Advice

Erratic transmission fluid level

You may notice an erratic transmission fluid level reading on the dipstick or possible leaks around the filler tube and grommet

If you have an erratic transmission fluid level on the following vehicles: 2000-07 Taurus • 2000-03 Windstar • 2004-07 Freestar • 2000-05 Sable • 2004-07 Monterey, read this post

The affected transmissions are the F50N, AX4N and AX4S. The problem is caused by a restricted transaxle vent. The fix requires replacing the transaxle vent with a 90° vent on the transaxle back to the cowl area next to the brake master cylinder and tie wrapped in place with the end of the hose facing down.

The new vent is Part # 1C3Z-7034-AA. If you need more information on how to make the repair, see Technical Service Bulletin 06-18-13.

For more information on this repair or any others for your vehicle, buy an online subscription to either Alldatadiy.com or eautorepair.net. Click on this link to compare the two services: Compare Alldata and Eautorepair.

You need a professional shop manual to work on a late model vehicle. And you need access to the latest technical service bulletins so you don’t waste time and money replacing parts that may misbehave due to a manufacturer’s software glitch. Forget about those cheap manuals you find at the auto parts store. They will just lead you astray. Here are the two best online shop manuals around.

Eautorepair.net is really Mitchell On Demand with a consumer style interface.
Get a 1-Month subscription (31 Days) for $16.99, 1-Year (Best Value!) for $25.99, or a    4-Year (Best Value!) for $39.99. I like the wiring diagrams in Eautorepair.net better than the hard-to-read factory diagrams on Alldatadiy. However, Eautorepair.net doesn’t show how to remove trim or door panels. Alldata does.

AlldataDIY.com is simply Alldata with a consumer style interface. They have a different pricing model. But a 1-year subscription for $26.95. Add additional vehicles for $16.95 for a year. Or, buy their 5-year subscription for $44.95. Add additional vehicles for $29.95 for five years.

© 2012 Rick Muscoplat

Posted on by Rick Muscoplat


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