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#1 |
Join Date: Nov 2019
Location: Oklahoma
Posts: 11
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Hello Everyone.
I'm new to this forum so I hope this is in the correct place. I've got a 94 ZR-1 that won't reverse. The car will shift into all gears fine (including reverse), but when I shift into the reverse gear the car won't move. If I release the clutch in that same gear, it just idles like it's in neutral.. All forward gears are behaving normally. The issue started when I was cruising on the hwy in 5th gear. I started to hear a grinding sound and thought I ran something over. Suddenly the car lost power and started bogging, I immediately started to pull over to the side of the road. I went to downshift as I was slowing down and as I shifted out to neutral I realized I had no access to forward gears, so I stayed in neutral until I stopped. I got the car towed and later, the forward gears were working just fine again. I checked the clutch reservoir and it was empty, I filled it up and took it for a drive. Everything was going fine and then I noticed that my reverse gear was not engaging. I can physically shift into reverse and the reverse lights come on but the car will not move in that gear and also will not stall if I let go of the clutch. As if it's still in neutral. Just hoping someone may be able to point me in a good direction of where to look. Maybe clutch or pressure plate? Or maybe it's just the reverse gear on the zf6. Just looking for some experienced advice. Thanks. |
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#2 |
![]() Join Date: Nov 2007
Location: Sunshine State
Posts: 1,071
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Send email to billb@zfdoc.com or call Bill Boudreau at (602) 319-6575.
This is the the man to ask ALL questions to about the ZF 6....
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[B]1990 #2815[/B] [COLOR="Red"][B]Red/Red[/B][/COLOR] Ported Plenum & IH (by Pete) Haibeck Chip Rebuilt FPR (by Phil) FIC Injectors Watson LT Headers 3" Stainless Works exhaust Lingenfelter Open Air Lid Bill B Built Transmission Shifter & C Beam Plates [FONT=Impact][COLOR=red]1992 [COLOR=black]#[/COLOR] 091[/COLOR][/FONT] [FONT=Impact][COLOR=#ff0000]Red/[COLOR=silver]Gray[/COLOR][/COLOR][/FONT] [B]SOLD[/B] |
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#3 |
Join Date: Feb 2018
Location: owens valley
Posts: 25
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Defiantly get ahold of Bill . I bet he says you have the start of reverse gear failure . Please don't drive the car . Call bill first and go through the problem with him first . I have had this happen to me and it isn't cheap . Good thing is if you send to Bill to fix you will have a tranny that will shift like butter and last forever
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#4 |
![]() ![]() Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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I agree. It is, according to Bill Boudreau,
![]() Apparently, there is an inherent design lubrication issue with lubrication to the reverse idler gear. When not in use, it normally spins freely on the (counter or "lay") shaft, but if lubrication breaks down, the idler heats up and the oil film evaporates and galling begins - which causes the reverse idler gear to try to counter rotate the output shaft. (That is what causes that sudden feel of something dragging. If you don't pull over soon enough, the idler gear will weld to the counter shaft resulting in locking the output shaft and the car will skid to a stop at the rear wheels (ask me how I know)!!! The clutch is a separate issue - not related to your reverse gear problem.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry Last edited by Paul Workman; 11-02-2019 at 03:03 PM. |
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#5 |
![]() Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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It’s the transmission. Nothing to do with the clutch pack. Early blue labels have been known to completely lock up as a result of this issue. As was said don’t drive it. Bill Boudreau is the go to guy for this. His rebuilds are legend, but pricey. Your other option is to find a replacement trans.
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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. |
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#6 |
Join Date: Nov 2019
Location: Oklahoma
Posts: 11
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Thanks for the replies guys, I did speak with Bill and he told me basically what Paul said above about the reverse idler gear and lubrication issue.
I could have Bill fix it, but for convenience sake it would be simpler to have the work done locally. Does anyone know if this is something that your typical transmission shop can handle sufficiently? Let me know what you guys think. Thanks. |
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#7 | |
![]() ![]() Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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__________________
Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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#8 | |
![]() Join Date: Jun 2015
Location: Texas
Posts: 530
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If I was in your shoes I would visit a couple of shops and check them out. They probably wont do the same level of work that Bill would do, though. In other words I think Bill corrects the lubrication problem so it never happens again, Many shops even if they rebuild will only do so to original spec. |
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#9 | |
![]() Join Date: Nov 2007
Location: Sunshine State
Posts: 1,071
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__________________
[B]1990 #2815[/B] [COLOR="Red"][B]Red/Red[/B][/COLOR] Ported Plenum & IH (by Pete) Haibeck Chip Rebuilt FPR (by Phil) FIC Injectors Watson LT Headers 3" Stainless Works exhaust Lingenfelter Open Air Lid Bill B Built Transmission Shifter & C Beam Plates [FONT=Impact][COLOR=red]1992 [COLOR=black]#[/COLOR] 091[/COLOR][/FONT] [FONT=Impact][COLOR=#ff0000]Red/[COLOR=silver]Gray[/COLOR][/COLOR][/FONT] [B]SOLD[/B] Last edited by 32valvZ; 12-01-2019 at 08:42 AM. |
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#10 | |
![]() Join Date: May 2008
Location: Okemos, MI.
Posts: 1,189
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__________________
Joe Thomas Corvette Club of Michigan NCRS-Michigan Chapter Member NCM Master Ambassador NCM Lifetime Member Former NCM Board Member 1991 ZR-1 Melon Copper Metallic/Black 1992 ZR-1 Bright Red/Black (Sold) 1995 ZR-1 Bright Aqua/Gray (Sold) 2012 ZR1 Super Sonic Blue / Dark Titanium |
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Tags |
clutch, reverse, stall, transmission, zf6 |
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