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  #1  
Old 06-18-2018, 03:02 PM
hindsbru hindsbru is offline
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Join Date: Jun 2018
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Default another new guy needing help

Hi gang. Yup, newbee here with an old Ranger that I've had for close to 200,000 miles and can't seem to let the old girl go.

It's a '91, 2.9 V6 4WD and everything works great - except after about a little over an hour on the highway the clutch pedal just goes completely away. Funny thing was got my grandson out of bed to arrange a ride and was fixing to call a tow when I got back in it and the clutch pedal felt fine!

It seems to work fine around town on short trips, but after about an hour at Hiway speeds the pedal will just go to the floor with almost no resistance. This has happened about 3 times. First time just waiting worked, the other two times I'd pump the pedal like crazy and get enough back to get it in gear and once under way again it would last a while.

Can anyone point me in the right direction on the forum?

Perplexed in W. WA
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Old 06-18-2018, 03:14 PM
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  #3  
Old 06-19-2018, 07:42 PM
jeff18 jeff18 is offline
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Join Date: Jan 2018
Posts: 70
Default Re: another new guy needing help

That is weird, however it sounds like a slave cylinder issue. Talk to a mechanic about it. Prefer an older mech that has been around the block a few times. Experience pays dividends.
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Old 06-20-2018, 01:11 AM
Undrstm8ed Undrstm8ed is offline
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Join Date: Apr 2013
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Default Re: another new guy needing help

I'd suspect a hydraulic problem.

Check the fluid level in the master cylinder (which should be the opposite side of the bulkhead to the pedal, and will look like a smaller, simpler version of the brake cylinder). If it is low or empty, you have a leak. If it is still full, you most likely have a problem with the master cylinder, or an airlock in the system.

If there is a leak, the fault will be either in the pipe(s) or the slave cylinder. You might be able to see signs of fluid where it leaked - if not, refill & bleed it, and get an assistant to press the pedal as you check for leaks (be careful, as fluid could spurt out under pressure!)

It is unusual for an airlock to suddenly appear, and they usually manifest as limited resistance rather than none at all - you'd find that the pedal did nothing for much of its travel, then got harder once you had compressed the air enough.

Master cylinder issues can be harder to diagnose, as they can fail without leaking externally, and simply allow the fluid to freely pass between the reservoir and pressure sides of the cylinder.
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