transmission or other problem
Thread Starter
|
Senior User
Joined: Jul 2009
Posts: 328
Likes: 0
transmission or other problem
when i am in 3rd or fourth gear (aod trans) and i let off the gas, it coasts a little bit then it feels like a jake brake (puts load against the engine to slow down an engine without pushing a foot brake)
it sucks alot because going into it isn't that bad but coming out of the braking period is rough and makes a loud clunk noise (probably the rear end).
i am almost certain this is caused by the TPS but i want some input before i get one.
because the tps controls the engine speed theoretically speaking, the trans linkage is also connected so if the tps is doing some other dumb thing, it moves the linkage for the transmission.
otherdays the truck runs fine and doesn't do this at all until it gets hot
it sucks alot because going into it isn't that bad but coming out of the braking period is rough and makes a loud clunk noise (probably the rear end).
i am almost certain this is caused by the TPS but i want some input before i get one.
because the tps controls the engine speed theoretically speaking, the trans linkage is also connected so if the tps is doing some other dumb thing, it moves the linkage for the transmission.
otherdays the truck runs fine and doesn't do this at all until it gets hot
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
aod isnt controlled by the computer so it sounds more like your TV cable needs adjusted. I suggest going to a shop to have this done, if not done properly your tranny will burn up very fast. also get the fluid/filter changed if its been 20K miles or more since last being done. and dont drive in OD unless you are going 55mph or more.
also pull codes if you feel a sensor is causing an issue. dont throw parts at it hopeing to fix a problem this is expensive and silly.
www.fordfuelinjection.com has instructions for pulling codes using a paperclip and counting flashing.
what size tires are you running also?
also pull codes if you feel a sensor is causing an issue. dont throw parts at it hopeing to fix a problem this is expensive and silly.
www.fordfuelinjection.com has instructions for pulling codes using a paperclip and counting flashing.
what size tires are you running also?
Thread Starter
|
Senior User
Joined: Jul 2009
Posts: 328
Likes: 0
its been 6500 miles since the filter was changed and a tranny flush was done.
i adjusted the cable already to best suit the shift pattern to the RPM's.
i already know that i should put it in OD manually when i am at 50+ mph
no codes are present and the check engine light is not flashing.
tire size is 31" but thats really not much different then the stock 235 tires.
when the throttle body opens and closes according to the pedal adjustment when driving, doesn't that change the way the transmission also engages with linkage going back to it?
i adjusted the cable already to best suit the shift pattern to the RPM's.
i already know that i should put it in OD manually when i am at 50+ mph
no codes are present and the check engine light is not flashing.
tire size is 31" but thats really not much different then the stock 235 tires.
when the throttle body opens and closes according to the pedal adjustment when driving, doesn't that change the way the transmission also engages with linkage going back to it?
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
if the tps was the problem a fault code would trip. just because the CEL isnt on codes can still be present. How did you pull codes because you should have gotten at least a systems clear code.
perhaps your adjustment of the tv cable isnt correct?
perhaps your adjustment of the tv cable isnt correct?
Thread Starter
|
Senior User
Joined: Jul 2009
Posts: 328
Likes: 0
i haven;t pulled codes for over a year because nothing has flashed at me yet. the problem with the braking feeling has always been present since the engine and transmission were put in.
i adjusted the cable for the transmission many times in one day and i left it where the shift points were the most correct. otherwise it shifted too late and long or wrong RPM's or refusing to go in until i punched the gas.
its set as good as i can get it but 3rd is a little low 25mph +-3mph
when i do pull codes it doesn't do anything other then the basic turn the wheel one direction, hold a steady 2000 rpm, push brakes, put in gear, on/off ignition...
our mac mentor (updated through 2008) doesn't show anything conclusive to the problem
i adjusted the cable for the transmission many times in one day and i left it where the shift points were the most correct. otherwise it shifted too late and long or wrong RPM's or refusing to go in until i punched the gas.
its set as good as i can get it but 3rd is a little low 25mph +-3mph
when i do pull codes it doesn't do anything other then the basic turn the wheel one direction, hold a steady 2000 rpm, push brakes, put in gear, on/off ignition...
our mac mentor (updated through 2008) doesn't show anything conclusive to the problem
Thread Starter
|
Senior User
Joined: Jul 2009
Posts: 328
Likes: 0
is there such a thing as lack or over voltage to the TPS? any adjustments under the throttle body where it is located? can i take it out and clean it? throttle body is really clean (took it off and let it sit in a pail of solvent for a weekend).
does the transmission fluid level have to be exact on the dipstick reading? what if the fluid level is over the full mark by 1/2"?
does the transmission fluid level have to be exact on the dipstick reading? what if the fluid level is over the full mark by 1/2"?
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
go to fordfuelinjection.com and pull codes using the paper clip method and count the CEL flashes.
being overfull by that much wont cause anything. on my 88 with an AOD i recall when i came out of od into 3rd it would decelerate alot. the gearing jump from od to 3rd is pretty significant and if your motor has good compression that will also affect how the vehicle slows down.
the tps can be adjusted, look at that website i posted and read up. lots of great info for troubleshooting.
being overfull by that much wont cause anything. on my 88 with an AOD i recall when i came out of od into 3rd it would decelerate alot. the gearing jump from od to 3rd is pretty significant and if your motor has good compression that will also affect how the vehicle slows down.
the tps can be adjusted, look at that website i posted and read up. lots of great info for troubleshooting.
Trending Topics
Thread Starter
|
Senior User
Joined: Jul 2009
Posts: 328
Likes: 0
here is my codes
I--I--I--I------III--III--I
11? 11? 3? 3? 1?
what the hell does this mean? the dash marks are the seconds inbetween blinks.
I--I--I--I------III--III--I
11? 11? 3? 3? 1?
what the hell does this mean? the dash marks are the seconds inbetween blinks.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
tip49
1948 - 1956 F1, F100 & Larger F-Series Trucks
3
Jul 12, 2007 07:43 PM
