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1990 Toyota pickup V6 engine manual problem with Transmission

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I have a 1990 Toyota pickup V6 engine manual transmission. The engine seem strong still, the problem is the transmission when if first strat up the truck it will shift into 1st or reverse no issues, if its warmed up I have to shut it off to shift into 1st or reverse. Once the truck is in motion it will shit fine most of the time. What could be the problem, should i have it rebuilt or replaced and where should i look for a transmission i live in Alaska. I dont mind paying for shipping one to Alaska if theres a guaranteed good place to get one or a good place that might be able to fix the one I have

This topic was modified 3 years ago by Toyota man

The master cylinder was replaced 7 years ago, the clutch pedal and all hardware was replaced and the clutch itself was replaced. You might laugh but the mechanic working for the company I work for said he couldn't get the throw out bearing outand said it don't need replaced so that's the only thing not replaced.

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It's a Toyota pickup. You may have the original clutch master and slave cylinders on that for 30 years and it may be mostly the same fluid in the system. You may want to start by bleeding that out as you replenish the reservoir with new fluid. (the fluid could have degraded or been contaminated with water) (Brake fluid attracts water and .....30 years)

Then you may want to check your Clutch Pedal Adjustments.

Get your Clutch Pedal set at the right distance from the floorboard first. (referenced in Blue)

Then get the Clutch Pedal Free Play set right. (referenced in Red)

Making the adjustment for the correct clutch pedal height and the clutch pedal free play will ensure that the clutch pedal push rod is set correctly to push the clutch master cylinder piston all the way in. (While you're down there inspect the clutch/brake pedal mountings to be sure nothing is loose)(again.....30 years)

If that doesn't work get an assistant to push the clutch pedal so you can see if the clutch slave cylinder is moving the clutch lever the same distance on the first "cold clutch" of the day as it is after the truck gets warm (and you can't shift into 1st or reverse)

Go under the truck and scribe some marks on the back of the clutch slave cylinder and on the clutch lever so you can measure at the exact same points. (an 1/8th of an inch can make the difference). Is the clutch slave cylinder moving the clutch lever the same distance at the 1st "clutch" of the day as it is when the gears won't engage after the truck warms up?

Also, there may be an internal leak in either the clutch master cylinder or the clutch slave cylinder and it may be less to do with "heat" and more to do with how many times you press the clutch in consecutively.

 

 

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