Question about 1986 Pontiac Fiero

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Unable to shift any gears (manual trans)

Unable to shift any gears (1986 5spd manual trans). Replaced & bled Hydro master cyl., but still nothing. What should I check and adjust next?
Any advice on adjusting cables or troubleshooting to see if gearbox is bad is greatly appreciated.

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Have someone watch the clutch arm when pushing on the clutch to make sure it is actually moving when the pedal is pressed. Fiero's are miserable to get the clutch bled properly

Posted on Aug 19, 2010

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It needs to be properly bled again. It's a common problem because the Haynes and other manuals don't mention having to bleed the slave cylinder too. Get a buddy, have him use both hands and compress the slave cylinder rod into the body while you open and close the bleed valve. You need to do this like 10 times. describes this in detail.

Posted on Aug 28, 2011


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Ideally, even if the clutch is worn, the vehicle should still shift as the hydraulic clutch system is designed to be self adjusting to compensate for wear. That leaves just the Clutch Master Cylinder and the Clutch Slave Cylinder.

First thing, check & restore fluid level to full if it is low.

You might just try to quickly pump the clutch a few times and then try going into reverse with the engine running, if it does, then you're going to need to check the entire hydraulic clutch system for leaks, repair any & then bleed the system to get it to work properly. The Clutch Master Cyl. can leak back through the firewall in the drivers compartment near the pedals and indicates seal damage within the Clutch Master cyl. itself.

If you still can't shift even with pumping the clutch it could still be the hydraulic system, it's just time to perform another test:

If the shifter goes easily from gear to gear and into reverse with no problem when the engine is off and sitting still, that confirms that the trans shift components should be in good shape. If you notice it binds, then there could be some internal damage to the forks or other parts.

Back to the hydraulic system, If you find it is the Clutch Master cylinder, it has to be bled itself before attempting to bleed the rest of the system once repairs are made. Once replaced, just keep the connection to the hose loose a small amount while someone presses the clutch, then tighten before they remove the pressure from the pedal. It may be necessary to pull the clutch pedal up by hand and operate it by hand a few times until you build pressure on the system to cause it to stay in the rest position. That will remove air from that part.

If it's the slave cylinder or just a line leaking, you can just bleed the system from the slave cyliinder.

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