Seat motor runs but seat won't move - ZR-1 Net Registry Forums

Jagdpanzer · 04-05-2009

Went to move the driver's seat back this afternoon on my 94 and the motor runs but the seat doesnt' move either backwards or forward. It this much trouble to fix?

Sgreg · 04-05-2009

Generally requires a new motor. The problem is worn gear teeth but rebuild kits are hard to find therefore the motor. Used working power seat assemblies are cheaper than a new motor. Those are the options basically.. Make sure the seat is not moving because of something caught under the seat. I.e. beer cans, etc. Seat comes out easily so you may want to remove it and examine before peeling out the greenbacks. May just be jammed. You might be lucky.

Ccmano · 04-05-2009

Seat mechanism transmission is shot, a common C4 issue. Ecklers and MA sell rebuilt units for about $250 exchange. There's a guy over on CF rebuilding just the transmission itself for about $100, Keenparts.com I believe.
H

GOLDCYLON · 04-05-2009

As all have stated the teeth are worn and a replacement motor is the fix

Aurora40 · 04-06-2009

Just FYI, it's really really easy to pull the seat cushion off and have a look just to be sure it's not something jammed up in there. Or at least the pre-Lear seats are, I assume yours are too. There's a catch at the front, push the cushion down and flip the catch, then basically swing the seat bottom forward as if it were the clamshell hood.

Jagdpanzer · 04-06-2009

Thanks guys, I''ll pull the seat and check out the motor and transmission.

QB93Z · 04-06-2009

Phil,

Let me know if you need a helper in your troubleshooting. I will be glad to come down and give you a hand.

I had my seats out two weeks ago. No Problem.

A year ago, the 1996 car seat would not move back. I took the seat out to investigate and it worked fine. Cleaned the tracks and reinstalled and it has worked ever since.

Jim

phrogs · 04-08-2009

Hey I dont know if your harness is the same for a 90-91 but I have plenty of these seat tracks at the house Ill hook you up for a good deal if you can use one of these since you lent me the rear end tools.

Let me know

Jp

Jagdpanzer · 04-11-2009

Jim and JP thanks for offering to help me out.
Got around to pulling the seat apart today and found the motors to be in good shape however, I did find the plastic assembly that holds the worm gear shafting in the seat transmission case to be all busted up. I guess after 15 years this rather flimsy plastic piece had seen enough (I'm confident the load of shifting my my deriair around over the past couple of years had little to do with it's demise). Anyway, I went ahead and followed Ccmano advise and contacted Keen Parts for a rebuilt unit with all new plastic internals. Thanks Ccmano for the lead.

Ccmano · 04-11-2009

Your welcome...

They will sell you just the transmission and you just reassemble yourself. They're the only ones the do that. There are two different sized output shafts depending on the year, so be careful. What are they getting for a seat transmission these days?

H

04-05-2009	#1
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,661	Seat motor runs but seat won't move Went to move the driver's seat back this afternoon on my 94 and the motor runs but the seat doesnt' move either backwards or forward. It this much trouble to fix?

04-05-2009	#2
Sgreg Join Date: Aug 2006 Location: Texas Posts: 518	Re: Seat motor runs but seat won't move Generally requires a new motor. The problem is worn gear teeth but rebuild kits are hard to find therefore the motor. Used working power seat assemblies are cheaper than a new motor. Those are the options basically.. Make sure the seat is not moving because of something caught under the seat. I.e. beer cans, etc. Seat comes out easily so you may want to remove it and examine before peeling out the greenbacks. May just be jammed. You might be lucky. __________________ 1991 ZR-1, Black, Black, # 541

04-05-2009	#3
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Seat motor runs but seat won't move Seat mechanism transmission is shot, a common C4 issue. Ecklers and MA sell rebuilt units for about $250 exchange. There's a guy over on CF rebuilding just the transmission itself for about $100, Keenparts.com I believe. H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

04-05-2009	#4
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,155	Re: Seat motor runs but seat won't move As all have stated the teeth are worn and a replacement motor is the fix __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

04-06-2009	#5
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,713	Re: Seat motor runs but seat won't move Just FYI, it's really really easy to pull the seat cushion off and have a look just to be sure it's not something jammed up in there. Or at least the pre-Lear seats are, I assume yours are too. There's a catch at the front, push the cushion down and flip the catch, then basically swing the seat bottom forward as if it were the clamshell hood. __________________ Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img]

04-06-2009	#7
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,689	Re: Seat motor runs but seat won't move Phil, Let me know if you need a helper in your troubleshooting. I will be glad to come down and give you a hand. I had my seats out two weeks ago. No Problem. A year ago, the 1996 car seat would not move back. I took the seat out to investigate and it worked fine. Cleaned the tracks and reinstalled and it has worked ever since. Jim __________________ If it isn't fun, you aren't doing it right! 1990 Black ZR-1 - sold 1993 Quasar Blue ZR-1 1994 Competition Yellow ZR-1 1995 Dark Purple ZR-1 Maryland State Coordinator WAZOO Member

04-08-2009	#8
phrogs Join Date: Jul 2004 Location: Kalamazoo MI Posts: 1,753	Re: Seat motor runs but seat won't move Hey I dont know if your harness is the same for a 90-91 but I have plenty of these seat tracks at the house Ill hook you up for a good deal if you can use one of these since you lent me the rear end tools. Let me know Jp __________________ JOHNNY P Currently own 90 ZR-1 #845 DRM 500 engine package 90 #226 Parts car Hit me up if you need anything.

04-11-2009	#9
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,661	Re: Seat motor runs but seat won't move Jim and JP thanks for offering to help me out. Got around to pulling the seat apart today and found the motors to be in good shape however, I did find the plastic assembly that holds the worm gear shafting in the seat transmission case to be all busted up. I guess after 15 years this rather flimsy plastic piece had seen enough (I'm confident the load of shifting my my deriair around over the past couple of years had little to do with it's demise). Anyway, I went ahead and followed Ccmano advise and contacted Keen Parts for a rebuilt unit with all new plastic internals. Thanks Ccmano for the lead.