Hard shifting/Grinding gears - Ford Mustang Forums : Corral.net Mustang Forum
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post #1 of 20 Old 04-13-2019, 07:52 PM Thread Starter
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Hard shifting/Grinding gears

I have a 1988 foxbody mustang 5 speed. My problem is when I go to shift into 3rd gear i have to push hard on the shifter and the clutch is all the way to the floor or it won’t go into gear . Also if I get on it from a dead stop I cannot get it into 2nd gear cause it grinds really bad. In order to get it to go in 2nd gear I have too let off the gas for a couple seconds then it will go into 2nd gear.

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post #2 of 20 Old 04-13-2019, 08:11 PM
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time for a new gearbox and clutch

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post #3 of 20 Old 04-14-2019, 04:04 PM Thread Starter
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time for a new gearbox and clutch
Sorry as in Gear box do you mean the shifter or transmission ? Thank you
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post #4 of 20 Old 04-14-2019, 04:11 PM Thread Starter
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time for a new gearbox and clutch
Sorry as in Gear box do you mean the shifter or transmission ? Thank you
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post #5 of 20 Old 04-14-2019, 04:46 PM
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Sorry as in Gear box do you mean the shifter or transmission ? Thank you
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post #6 of 20 Old 04-15-2019, 03:05 PM
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How many miles on the clutch and transmission?
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post #7 of 20 Old 04-16-2019, 01:41 AM Thread Starter
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Honestly far as I know it’s the original clutch n transmission with 130k on the car.
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post #8 of 20 Old 04-16-2019, 01:44 AM Thread Starter
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Originally Posted by indy2000 View Post
time for a new gearbox and clutch
Sorry as in Gear box do you mean the shifter or transmission ? Thank you
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Originally Posted by ZEN357 View Post
How many miles on the clutch and transmission?



I think it’s the original clutch and transmission. I’ve had the car for a few months. Also when I come to a stop I cannot get it to go in 1st heat unless I put it in 2nd gear first.
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post #9 of 20 Old 04-16-2019, 07:46 AM
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give it some time

soon you will you might have lockout in all gears

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post #10 of 20 Old 04-16-2019, 04:56 PM
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Could the problem be due to a stretched clutch cable?


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post #11 of 20 Old 04-16-2019, 07:45 PM
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I had similar symptoms with my 92, no matter what I did with the adjustment on the cable it was still horrendous to get it in gear... even changing gears.

When I finally got someone to push in the clutch for me so I could look at how things were reacting all along the cable, I noticed that my firewall was cracked and flexing. So much of the motion that should have been disengaging the pp was actually just moving the firewall. Fixed the firewall, adjusted the cable and no more grinding into gear.

This may not be your issue, but easy to eliminate as a culprit. my $0.02.

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post #12 of 20 Old 04-16-2019, 10:01 PM
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if the clutch is not disengaging, you should feel it on a flat surface, car should creep

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post #13 of 20 Old 04-17-2019, 08:08 AM
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I think itís the original clutch and transmission. Iíve had the car for a few months. Also when I come to a stop I cannot get it to go in 1st heat unless I put it in 2nd gear first.
I would definitely replace the clutch assembly and throw out bearing, the clutch cable, and then possibly the transmission or have it rebuilt.
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post #14 of 20 Old 04-17-2019, 08:53 AM
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Have you at least tried the self-adjust? (pulling up on the pedal)

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post #15 of 20 Old 04-17-2019, 08:58 AM
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that would reduce disengagement, the opposite of what is proposed

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post #16 of 20 Old 04-17-2019, 10:22 AM
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Unfortunately it sounds like the syncros in the transmission have given up and might have some bent shift forks. Might be time for rebuild/ replacement. You can start by draining the trans fluid and inspecting fluid. If it has a gold tint to it that's the syncros.

Other thing to check, has the car been lowered? if its too low the it can mess up the pinion angle and that can put the transmission in a bind.

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post #17 of 20 Old 04-17-2019, 10:37 AM
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Quote:
Originally Posted by Rollin_Colts View Post
I have a 1988 foxbody mustang 5 speed. My problem is when I go to shift into 3rd gear i have to push hard on the shifter and the clutch is all the way to the floor or it wonít go into gear . Also if I get on it from a dead stop I cannot get it into 2nd gear cause it grinds really bad. In order to get it to go in 2nd gear I have too let off the gas for a couple seconds then it will go into 2nd gear.
Older car, higher mileage....

I'm going to go with, it needs a new clutch and transmission rebuild. It could be any of these other things as well, but either way, it's the area of concern.

Process of elimination is your next step. Inspect all these possibilities before tearing it down completely.

Where does the trans/clutch engage when letting the pedal out? Closer to the top or just off the floor?
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post #18 of 20 Old 04-18-2019, 09:40 AM
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Older car, higher mileage....

I'm going to go with, it needs a new clutch and transmission rebuild. It could be any of these other things as well, but either way, it's the area of concern.

Process of elimination is your next step. Inspect all these possibilities before tearing it down completely.

Where does the trans/clutch engage when letting the pedal out? Closer to the top or just off the floor?
If you are going to rebuild the transmission yourself, you may want to give these guys a call.

https://www.americanmuscle.com/frpp-t5-rebuild-kit.html
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post #19 of 20 Old 04-18-2019, 04:12 PM
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The correct way to test clutch release is to put the stopped car in 4th or 5th gear.

After it is in 4th or 5th, hold the clutch pedal, rev the engine a little (maybe 1-2K RPM), and quickly try to move it into reverse.

If you can't get it in and it grinds bad, or if you have to fight it in while it is grinding, the clutch is not fully releasing. A full clutch release will let you go from 4th or 5th to reverse without any grinding.

This may not be all of your problem, but this is a proper test for full clutch release. Being in 4th or 5th without the car moving totally stops the input shaft. Reverse has no synchro, so if the clutch is grabbing any significant amount you will play hell getting it into reverse. If it pulls into reverse without a grind, you have full release.


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post #20 of 20 Old 04-18-2019, 08:19 PM
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The right way is to take it out and look inside. I have put a quart of Lucas ATF in my T5 and it helped go into gear.

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