SAAC Forum

The Cars => 1969-1970 Shelby GT350/500 => Topic started by: 69 GT350 Vert on January 09, 2023, 08:43:56 AM

Title: FMX Issue
Post by: 69 GT350 Vert on January 09, 2023, 08:43:56 AM
In the past 6 months or so, my FMX doesn't want to downshift into first gear when engine/trans is cold.  I find the car starts out in 2nd or 3rd gear at stop signs when cold.  Anyone know what I can do to fix this?  Fluid and filter change?  Thanks.
Title: Re: FMX Issue
Post by: Bill on January 09, 2023, 10:19:49 AM
Quote from: 69 GT350 Vert on January 09, 2023, 08:43:56 AM
In the past 6 months or so, my FMX doesn't want to downshift into first gear when engine/trans is cold.  I find the car starts out in 2nd or 3rd gear at stop signs when cold.  Anyone know what I can do to fix this?  Fluid and filter change?  Thanks.

Have you checked the fluid level "hot"?
When is the last time you changed the fluid and filter?
If not low, I'd start with the fluid and filter change and see how that goes.

Bill
Title: Re: FMX Issue
Post by: crossboss on January 09, 2023, 11:29:15 AM
Inside the trans where the shifter attaches, the large nut (inside) can be loose. This will cause the issues you describe. However, it is wise to take your car to a qualified transmission shop to be sure.
Title: Re: FMX Issue
Post by: TOBKOB on January 09, 2023, 12:23:15 PM
sounds like the governor sticking.

TOB
Title: Re: FMX Issue
Post by: crossboss on January 09, 2023, 12:50:27 PM
'Usually' when the governor is sticking it won't go into gear until it is completely warmed up.
Title: Re: FMX Issue
Post by: FL SAAC on January 09, 2023, 02:02:37 PM
easy peasy take it to a honest knowledgeable transmission shop

you will save your most valuable asset "time" and continue to enjoy your vehicle once properly diagnosed and repaired by a professional

Title: Re: FMX Issue
Post by: 69 GT350 Vert on January 09, 2023, 05:36:04 PM
I called the shop in Hanover, PA that rebuilt my FMX back in 2013.  He said it was the governor that is sticking.  I need to remove the governor and clean it out.  He thinks there is a removable governor inspection plate on the tailshaft housing to allow me to do this myself.  If not, then I have to take it to a tranny shop to remove the tailshaft housing to clean out the governor.