1989 F150 Clutch not working


Asked by May 11, 2016 at 06:48 PM about the 1989 Ford F-150 S Standard Cab 4WD LB

Question type: Maintenance & Repair

I bought a 1989 Ford F150 6 cylinder, 4wd, 5 speed manual transmission that had been sitting for a year. After fixing a couple things on it (Clutch interlock switch, headlight dimmer switch) I started it up and backed it up a few feet, then tried going forward, but clutch wouldn't engage. Now it won't go anywhere, backward or forward. After determining that the clutch master cylinder was full of fluid, I pulled the rubber inspection plug out of the bell housing and found it packed FULL of mouse nesting material .I vacuumed and blew it out as well as I could, but it still doesn't work. Any suggestions?

4 Answers


Rodent pee is very corrosive, if it got on the throwout bearing cone that attaches to the trans the throwout is most likely seized to the shaft, you will have to remove the transmission to find out what other damage has been done, but be prepared for the worst, like pitted flywheel and pressure plate, chewed up clutch lining plus what I have mentioned above.


Darn! I didn't want to hear that. I could smell the urine when I blew it out, so it's probably pretty pitted. Guess there's not much to do but tear it apart and have a look see. Thanks for the input.


You get a different look at what rodents can do when you live out in the sticks like use too, it just crazy where they can get and the damage they do. Good luck.

Dylan Detlor

Yeah i agree with tennisshoes on this one tear down and start fresh. New flywheel new clutch and throw out bearing

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