Hi gang, i;ve still having some issues with WOT and getting the van to move.
I've cleaned out carb, checked the cables going into it as well. The throttle cable was slightly loose, so i tightened it up and kickdown cable moves up when reving up engine.
When driving, and i floor it, the engine just revs up but doesn't move.
COncerning the kickdown cable. i can follow the cable from the carb, all the way down to this squarish box behind the drivers headlamp, ender the coolant reservoir.
what is this box in which the cable goes into? does this control shifting? can it malfunction?
i'm sooo trying to root out the problem and hope it's not a tranny issue. as the van was running perfectly one day and then bad the next.
thanks
fab

 

Your profile says 2001 Econoline.

But you are talking about a carb.

What year, make, model, engine, trans are you working on.

 

oups, sorry, i do this sometimes.
yes, it's a 2001 E150. I meant throttle body, not carb.

by any crazy chance, could it possibly have to do with the tranny shift sensor as well? read that it causes problems in shifting sometimes? just a hunch.

 

Sounds like that is your cruise control. Have you checked fluid level in the transmission? Low fluid will cause it to not move.

 

 

There is no kickdown cable on a 2001 E-Series.

Something internal to the transmission is broken.

That's the cruise control servo and cable. It has nothing to do with shifting.

That's the day it broke.

To give you any specific help I need to know more about the vehicle. In the driver's door opening is a data tag. On this tag, under a heading labled "TR" will be either a "U"or an "E". "U"means it hsa a 4R70W transmission, "E" means it has a 4R100 transmission. Which one does it have?

By tranny shift sensor do you mean the transmission range sensor on the driver's side of the transmission? There is no sensor called a shift sensor anywhere on the vehicle.

And if the transmission shifts OK, but releases at WOT then the problem isn't the transmission range sensor.

 

Mark, thanks for the reply.
i took a look inside the door it's written "U" so it is the 4R70W transmission i guess?
You're right, i is the cruis control mechanism and not kickdown cable thats at the throttle body.

I looked on the driversside of the transmission, i think that there is the drive gear selector on it. thats what i was refering to.

i just checked the trans oil and it looks and smells good and at a good level.

right now the shifting is so so, it seems like its hunting gears sometimes.
i just find it strange how it started doing this almost over night,
i did have it serviced at the dealership, did coolant flush. i noticed that it started acting up after this.

 

another "long-shot" possibility. I looked online and say that the truck has an external fuel filter. I can bet anything that it's the original one(soon to be 17 years old). It is possible that we changed it when we got the truck (now about 8 years ago). Could there be a possibility of a partially blocked filter? under lower speeds it can supply enough gas but under full load it cant?
i just changed the starter relay and charged up the battery as it often has a harder time starting up.
oh yes, and i ran some Seaf0am in the gas tank a couple of times in the last 3 months. we dont drive this van very much.
thanks
fab

 

Yes, that's the 4R70W.
That is the Transmission Range Sensor (TRS.)

Yes, that can happen. I've seen it many times.

 

Hi Mark. Would you know where the fuel filter would be located?
as for the tranny shift sensor, could that cause this issue?
right now, the car is not throwing any codes.
thanks
​​​​​​​fab

 

No, I don't.
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