C6 transmission issue (still)
Thread Starter
|
Elder User
Joined: May 2008
Posts: 619
Likes: 1
C6 transmission issue (still)
so, replaced the modulator valve - switched over to the single port version, since my 'replacement' motor doesn't have an EGR and didn't need the two vacuum lines. I thought the weird thing it was doing between 2-3 was due to the fault of the modulator, but it is still acting up. Once the transmission warms up, I drive it, it shift normal from 1-2, but going from 2-3, if you're on any throttle at all, the engine revs when trying to go from 2 to 3, then finally gets to 3. There's no clunk or anything. The other way to prevent the 2-3 shift issue is to really punch it (nearly WOT).
So under normal driving conditions, that 2-3 shift just isn't right. Should I try any adjustment on the modulator, or is it time to visit the tranny shop?
Update- I knew something was wrong! There is no kickdown rod on my transmission!! The PO must have taken it off when he changed out to the edelbrock carb. He never thought to put it back on!! Will the rod on my 77 F150 work? Would there be damage to the transmission driving without the rod?
So under normal driving conditions, that 2-3 shift just isn't right. Should I try any adjustment on the modulator, or is it time to visit the tranny shop?
Update- I knew something was wrong! There is no kickdown rod on my transmission!! The PO must have taken it off when he changed out to the edelbrock carb. He never thought to put it back on!! Will the rod on my 77 F150 work? Would there be damage to the transmission driving without the rod?
Senior User
Joined: Jun 2007
Posts: 218
Likes: 0
From: Colorado
so, replaced the modulator valve - switched over to the single port version, since my 'replacement' motor doesn't have an EGR and didn't need the two vacuum lines. I thought the weird thing it was doing between 2-3 was due to the fault of the modulator, but it is still acting up. Once the transmission warms up, I drive it, it shift normal from 1-2, but going from 2-3, if you're on any throttle at all, the engine revs when trying to go from 2 to 3, then finally gets to 3. There's no clunk or anything. The other way to prevent the 2-3 shift issue is to really punch it (nearly WOT).
So under normal driving conditions, that 2-3 shift just isn't right. Should I try any adjustment on the modulator, or is it time to visit the tranny shop?
Update- I knew something was wrong! There is no kickdown rod on my transmission!! The PO must have taken it off when he changed out to the edelbrock carb. He never thought to put it back on!! Will the rod on my 77 F150 work? Would there be damage to the transmission driving without the rod?
So under normal driving conditions, that 2-3 shift just isn't right. Should I try any adjustment on the modulator, or is it time to visit the tranny shop?
Update- I knew something was wrong! There is no kickdown rod on my transmission!! The PO must have taken it off when he changed out to the edelbrock carb. He never thought to put it back on!! Will the rod on my 77 F150 work? Would there be damage to the transmission driving without the rod?
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
77 F100-350 w/351M-400, D7TZ-7A187-B
73-74 F100-350 w/ 360, 390 2bbl, D3TZ-7A187-D
Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
Update- I knew something was wrong! There is no kickdown rod on my transmission!! The PO must have taken it off when he changed out to the edelbrock carb. He never thought to put it back on!! Will the rod on my 77 F150 work? Would there be damage to the transmission driving without the rod?
Trending Topics
Thread Starter
|
Elder User
Joined: May 2008
Posts: 619
Likes: 1
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Senior User
Joined: Jun 2007
Posts: 218
Likes: 0
From: Colorado
Are we talking about the tubular rod that is connected to the trams and makes a 90 degree turn towards the carb . I'm am using the stock rod on my 4 bbl Holly on a Preformer RPM High rise manifold .
Thread Starter
|
Elder User
Joined: May 2008
Posts: 619
Likes: 1
Thanks. Yeah, these aftermarket carbs are usually designed to work with a variety of engine/transmission combos. So I think, as long as the motor/tranny combo came on your truck, it should work. for me, I do have the original C6, but my 390 is off of a Fairlane GT. Same block, but heads and possibly intake a little different. I would say should look at either the 2BBL or 4BBL option for kickdown rod, for the 390.
Cargo Master
Joined: Aug 2007
Posts: 2,560
Likes: 69
From: New Zealand
Regarding the kickdown - it's not critical to have it operating on a C6 - there is no harm done to the transmission by not having it.
Personally I prefer not to have them hooked up, to avoid brutal WOT downshifts.
The last C6 I had worked perfectly just with the modulator.
Personally I prefer not to have them hooked up, to avoid brutal WOT downshifts.
The last C6 I had worked perfectly just with the modulator.
Thread Starter
|
Elder User
Joined: May 2008
Posts: 619
Likes: 1
I saw the Lokar cable kickdown and it looks nice. Also saw the kickdown adapters from Edelbrock. The Lokar is pricey for what it is, but the only option. did you go with the C6 universal one? Part # KD20C6U.
Everyone's right about the kickdown rod - you don't have to have one, just slap it into the lower gear if you want power. So my 2-3 has some slop in it - might be time for the tranny shop, unless I feel like manually shifting gears all the time, which isn't bad for loosening the tires from the pavement!