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2002 Ford F-150 Clutch Pedal Low When Cold

2002 ALL OTHER MAKES ALL OTHER MODELS
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MBDOWTY
  • MEMBER
  • 2 POSTS
Truck was working fine until yesterday when I backed out of the driveway and tried to shift out of Reverse. It was difficult and I noticed the clutch pedal had little resistance.

I made it into 1st, and nearly got whiplash when I released the clutch. The normal "engage" position of the pedal was now very close to the floor.

It is like the clutch now wants to be pressed through the floor to disengage.

The problem went away after driving for a while and having the engine heat up....so I ignored it...

Same problem this morning, but worse.
What's up?
Dec 18, 2006 at 12:12 AM
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BRUCE HUNT
  • ✓Experienced Mechanic
  • 3,754 POSTS
Check the clutch master cylinder. I bet the level is low. Then I would venture to say you have a failing slave cylinder. When the vehicle is cool, that causes objects to contract. They expand when they get warm. So using that sense of logic, seals in the slave cylinder can leak when cold but as the engine warms the seals expand and perform normally. You loose fluid only in the morning.

IF I am right and it is time to replace that slave, the question is whether it is internal or external. Don't have that info available to me but if it is internal to the tranny, it is time to slip in a new clutch as well.
Dec 18, 2006 at 1:10 AM
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MBDOWTY
  • MEMBER
  • 2 POSTS
Strange, ...actually the fluid in the clutch reservoir was full.
Dec 19, 2006 at 5:42 AM
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Suggested Repair

Inspect the clutch master and slave cylinders. A slave that leaks when cold can cause a low engagement point even if the reservoir looks full once warm. If the slave is inside the transmission, replace the clutch at the same time.

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Conversation Summary

A 2002 Ford F-150 with about 70,000 miles developed a clutch pedal with little resistance that engaged very near the floor, especially when cold; the problem eased after the truck warmed up. The expert advised checking the clutch master cylinder fluid and suspected a failing slave cylinder whose seals leak when cold and seal better when warm. The owner later reported the reservoir was full. The expert also said that if the slave is internal to the transmission, the clutch should be replaced with it.

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