Master mechanic question
6/10/15 @ 11:18 AM
2010 Ford Expedition. So when we hook up the boat and make even the slightest turn while under power it makes a grinding kinda noise, it also feels like driving on gravel even when on black top. It's very hard to explain. It only does it while a heavy load is being towed and only when turning. Any ideas? I was thinking the limited slip my be starting to go.
6/12/15 @ 7:57 PM
From what you describe I think the driveline or pinion angle is what is the issue. With such a heavy load, being you have independent rear suspension and not a solid rear axle which probably is what your experiencing. We have some issues with f150s and customer stating the same type of issue you are having but we can change that on them but not really a fix for independent rear suspension.
6/12/15 @ 12:43 PM
U mentioned driveline angle. Could it be rear u joint on drive shaft. The boat is a 21 foot Boston whaler it's super heavy. The truck squats a lot when we put it on. Could that be enough to change angle and make u joint act up. Thanks again
6/12/15 @ 12:40 PM
6/11/15 @ 8:20 PM
Possible clutch packs in rear diff. from load. Could also be the driveline angle. Usually with clutch packs it can do it without a load...If your making turns from stops and accelerating without a load usually is another sign. You probably have the 9.75 rearend. Not to uncommon...do several a month. There is updated clutch packs and vent hose kit for f150...and I think without running the Vin that your vehicle is also included in the updated parts.
6/10/15 @ 3:41 PM
6/10/15 @ 3:22 PM
6/10/15 @ 2:48 PM
Yes you feel it in the seat. Not when braking. only when applying gas only when pulling a 21 ft boat ( it's heavy) and only when turning left or right ,all 3 must be present at the same time for it to happen. It's a feeling I have never felt before and it does it in 2 wheel drive and in 4 wheel doesn't change. Take boat off and it doesn't do it even if you turn sharp and really stand on it.
6/10/15 @ 12:49 PM