 914 will not shift, Went over bump, lost shifting power |
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| zaballosc |
 Jul 29 2019, 10:40 AM
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#1
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Newbie  Group: Members Posts: 19 Joined: 31-August 15 From: Whitewater, WI Member No.: 19,118 Region Association: Upper MidWest  |
Hello,
I'm in a bit of a pickle. I was test driving my '74 2.0 before a track day, and hit a bump in the road. I immediately lost shifting power, and can no longer get into gear. I have a Rennshift shifter in the car, and the car has the side shift trans. I checked under the car after towing it home, and wasn't able to find any visible damage. The clutch engages and the cable is in fine condition. There is no visible damage to the shifter rod, so my question is this: what would be the first failure point in an event like this? Could the Rennshift have been taken out of adjustment by the bump? Could I have shattered the plastic bushings? My fingers are crossed that I didn't ruin the transmission, but since this is a low car I'm hoping that someone on this forum has gone through something similar before. I'm slowly learning how to work on cars, but this issue has left me totally stumped. |
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Replies(1 - 18)
| rhodyguy |
Jul 29 2019, 10:49 AM
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#2
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,080 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
Check the front and rear coupler screws.
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| Luke M |
Jul 29 2019, 10:53 AM
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#3
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Senior Member Group: Members Posts: 1,372 Joined: 8-February 05 From: WNY Member No.: 3,574 Region Association: North East States 
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Do you have any gears at all?
Bushings are a good place to start but you may still be able to get a few gears. Did you check all of the linkage bolts to see if any came loose or fell out? Have a helper shift the car for you as you look under to see if all the linkage moves. Also check the trans shifter console roll pins. There's 2 of them, one that holds the ball stud and another internal for the shift fork selector. Pretty straight forward linkage setup so if it's all intact start looking at trans internal. |
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| zaballosc |
Jul 29 2019, 11:00 AM
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#4
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Newbie Group: Members Posts: 19 Joined: 31-August 15 From: Whitewater, WI Member No.: 19,118 Region Association: Upper MidWest |
I have no gears, I can put the clutch in and try to shift were the gate would normally be, but I hear grinding (Which is weird as the clutch seems to work). In my understanding if the clutch was fully functioning the gears wouldn't me moving so there wouldn't be any way for it to grind. I'll check those bolts/pins, my dad and I are going to be spending the next few hours looking at this.
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| SirAndy |
Jul 29 2019, 11:06 AM
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#5
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Resident German Group: Admin Posts: 41,643 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(rhodyguy @ Jul 29 2019, 09:49 AM)  Check the front and rear coupler screws. (IMG:style_emoticons/default/agree.gif) One of the cone set screws came lose, probably the one on the first coupler right after the firewall. Get under the car and check the coupler. If you still have the rubber boot that goes over the coupler the screw might be lying in there. Don't reuse those setscrews (unless you are in a pinch to get home) they have special threads that deform when tightened to make them lock. Replacements are cheap. (IMG:style_emoticons/default/bye1.gif) |
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| rhodyguy |
Jul 29 2019, 11:10 AM
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#6
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,080 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
Jwest coupler screws are reusable.
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| zaballosc |
Jul 29 2019, 01:27 PM
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#7
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Newbie Group: Members Posts: 19 Joined: 31-August 15 From: Whitewater, WI Member No.: 19,118 Region Association: Upper MidWest |
Okay, after looking at where the shift rod enters the trans I'm not sure if anything broke. I had my dad shift while I was under the car, and surprisingly he was able to grab 3 gears. The coupler into the transmission was working fine, and the rod was moving while he shifted. Could the bump have knocked the rennshift out of alignment? Thank you guys for all of your help already, all of this has been super helpful. We checked the coupler screws, and they seemed to be in fine condition.
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| SirAndy |
Jul 29 2019, 01:58 PM
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#8
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Resident German Group: Admin Posts: 41,643 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(zaballosc @ Jul 29 2019, 12:27 PM) Okay, after looking at where the shift rod enters the trans I'm not sure if anything broke. I had my dad shift while I was under the car, and surprisingly he was able to grab 3 gears. The coupler into the transmission was working fine, and the rod was moving while he shifted. Could the bump have knocked the rennshift out of alignment? Thank you guys for all of your help already, all of this has been super helpful. We checked the coupler screws, and they seemed to be in fine condition. But did you check the coupler at the firewall? (IMG:style_emoticons/default/popcorn[1].gif) |
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| JRust |
Jul 29 2019, 02:04 PM
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#9
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914 Guru Group: Members Posts: 6,307 Joined: 10-January 03 From: Corvallis Oregon Member No.: 129 Region Association: Pacific Northwest
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You say the clutch engages? Sounds like clutch tube possible let go inside the tunnel? Which doesn't let it engage fully & why it could be grinding rather than going into gear
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| Steve |
Jul 29 2019, 05:54 PM
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#10
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914 Guru Group: Members Posts: 5,589 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California
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My shift coupler at the firewall went from rubber to glass and disintegrated when I hit a bump on the track. As the pieces fell out, I could engage less and less gears. It hides under the boot. See if it is still in one piece.
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| zaballosc |
Jul 29 2019, 07:03 PM
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#11
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Newbie Group: Members Posts: 19 Joined: 31-August 15 From: Whitewater, WI Member No.: 19,118 Region Association: Upper MidWest |
QUOTE(SirAndy @ Jul 29 2019, 11:58 AM) QUOTE(zaballosc @ Jul 29 2019, 12:27 PM) Okay, after looking at where the shift rod enters the trans I'm not sure if anything broke. I had my dad shift while I was under the car, and surprisingly he was able to grab 3 gears. The coupler into the transmission was working fine, and the rod was moving while he shifted. Could the bump have knocked the rennshift out of alignment? Thank you guys for all of your help already, all of this has been super helpful. We checked the coupler screws, and they seemed to be in fine condition. But did you check the coupler at the firewall? (IMG:style_emoticons/default/popcorn[1].gif) I'll check in a minute, ill also take a look at the clutch cable in the tunnel to make sure it fully engages correctly. Thank you for the helpful advice! |
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| DickSteinkamp |
Jul 29 2019, 07:10 PM
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#12
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Senior Member Group: Members Posts: 500 Joined: 27-February 17 From: Bellingham, WA Member No.: 20,876 Region Association: None |
QUOTE(SirAndy @ Jul 29 2019, 10:06 AM) QUOTE(rhodyguy @ Jul 29 2019, 09:49 AM) Check the front and rear coupler screws. (IMG:style_emoticons/default/agree.gif) One of the cone set screws came lose, probably the one on the first coupler right after the firewall. Get under the car and check the coupler. If you still have the rubber boot that goes over the coupler the screw might be lying in there. Don't reuse those setscrews (unless you are in a pinch to get home) they have special threads that deform when tightened to make them lock. Replacements are cheap. (IMG:style_emoticons/default/bye1.gif) X2. I use blue LockTite on my setscrews. |
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| maf914 |
Jul 30 2019, 06:45 AM
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#13
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Not a Guru! Group: Members Posts: 3,049 Joined: 30-April 03 From: Central Florida Member No.: 632 Region Association: None
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QUOTE(Steve @ Jul 29 2019, 03:54 PM) My shift coupler at the firewall went from rubber to glass and disintegrated when I hit a bump on the track. As the pieces fell out, I could engage less and less gears. It hides under the boot. See if it is still in one piece. Years ago, pre-internet, pre-914-world advice, I had the same experience when the original equipment bushings in the forward shift coupling disintegrated. Gear selection disappeared. I found the pieces in the rubber bellows boot. I replaced the coupler bushings, along with the fire wall and shift console bushings and shift rod cup bushing. The resultant shifting felt like new. |
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| flipb |
Jul 30 2019, 09:07 AM
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#14
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Senior Member Group: Members Posts: 1,722 Joined: 2-September 09 From: Fairfax, VA Member No.: 10,752 Region Association: MidAtlantic Region
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The shift rod is made of two components connected together. I once experienced a disconnect where the rear part of the shift rod was freely pivoting inside the thicker part. I was only able to get into fourth gear, and with some difficulty.
Repair was to reweld the two parts together and drill and insert a pin to ensure it doesn't come apart again. I have a video somewhere showing this up close. |
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| zaballosc |
Jul 30 2019, 10:29 AM
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#15
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Newbie Group: Members Posts: 19 Joined: 31-August 15 From: Whitewater, WI Member No.: 19,118 Region Association: Upper MidWest |
I’ve checked the firewall boot, and everything is in good working order. The set screws have not backed out, the firewall coupler seems in fine condition :/ . This one’s leaving me kinda stumped
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| mwyatt |
Jul 30 2019, 11:01 AM
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#16
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Member Group: Members Posts: 84 Joined: 5-April 03 From: San Diego, CA Member No.: 516 Region Association: Southern California |
I've bent the 4cyl engine mount by bottoming out, which threw my shifting out whack. Might be worth checking.
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| jkb944t |
Jul 30 2019, 11:25 AM
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#17
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Member Group: Members Posts: 464 Joined: 17-January 05 From: Canton, OH Member No.: 3,459 Region Association: None |
It seems to me that even if the shifter were completely out of adjustment the gears shouldn’t grind if the clutch is working correctly. I would make sure the clutch fork has full travel where it goes into the bell housing.
Jeff B |
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| Mark Henry |
Jul 30 2019, 05:16 PM
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#18
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(SirAndy @ Jul 29 2019, 01:06 PM) QUOTE(rhodyguy @ Jul 29 2019, 09:49 AM) Check the front and rear coupler screws. (IMG:style_emoticons/default/agree.gif) One of the cone set screws came lose, probably the one on the first coupler right after the firewall. Get under the car and check the coupler. If you still have the rubber boot that goes over the coupler the screw might be lying in there. Don't reuse those setscrews (unless you are in a pinch to get home) they have special threads that deform when tightened to make them lock. Replacements are cheap. (IMG:style_emoticons/default/bye1.gif) QUOTE(SirAndy @ Jul 29 2019, 03:58 PM) QUOTE(zaballosc @ Jul 29 2019, 12:27 PM) Okay, after looking at where the shift rod enters the trans I'm not sure if anything broke. I had my dad shift while I was under the car, and surprisingly he was able to grab 3 gears. The coupler into the transmission was working fine, and the rod was moving while he shifted. Could the bump have knocked the rennshift out of alignment? Thank you guys for all of your help already, all of this has been super helpful. We checked the coupler screws, and they seemed to be in fine condition. But did you check the coupler at the firewall? (IMG:style_emoticons/default/popcorn[1].gif) Did you actually check the set screws? I have the same set up and rennshifter plus I had the exact same issue. BTDT I can't remember which one but it was a set screw. |
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| Mikey914 |
Aug 2 2019, 10:14 AM
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#19
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The rubber man Group: Members Posts: 12,669 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None
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You can have someone try to shift while you watch. If the movement from the firewall is not the same at the trans you have a screw problem. If not you need to start looking at the trans side.
I suspect it's in the shift rod section as it's the weakest link - sorry bad pun |
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