Posting for my buddy...01 cclb 4x4 with JW trans. 3yrs/15k on it along with the Hydra with johns tunes.. Well, with the OD blinking, does it matter how many blinks, represents what's wrong or it just keeps blinking? Removed the hydra, cleared all codes that came up(KAM,P1000,P1211), only thing that popped back was the KAM and 1000...so, hydras for sale and now what you do with it blinking. Seems to run /shift clean, now that the chips' been removed. Prior to that, ALWAYS shifted with authority

 

Pretty sure it just blinks to show codes are stored. No code is communicated by the blinks like on the older Fords. Need a good code reader to pull the trans codes.

First thing that pops to mind is the shift wire chafing inside the steering column, although I think there are usually drivability problems when that happens. Not difficult to check tho.

 

Did not think of the wire chafing. Fixed that issue years ago on same truck. Was a preventative move which we found the yellow wire chewed up along with the allen/torq bolts loose.... I'll throw it at him today👍

 

That shows that the Hydra is not capable of reading transmission codes. You need a better way to read codes.

That's true. It just flashes on/off, it does not send code information. You must have a scanner capable of reading Ford specific codes.

That will not set a code.

 

Waiting on word fellas, for him checking a few things...wire/s, fuses...etc. Will update with info

 

That's all a waste of time if he hasn't read the codes first.

 

The (...etc) part was to contact the shop that installed the trans and plugged the hydra in and down loaded the tunes... What's the say'n Mark,... Can lead a horse to water...well, that's where I'M at anyhow

 

Does the speedometer still work? When my '99 did the blinking thing the spedo would not work right. Ended up being the VSS sensor in the rear differential.

 

^^^ just talked to him and asked. He said that it works. I went ahead and mentioned ANSI who "Mark", but ofcourse, he's sold on getn the pcm reflashed...beat'n a horse

 

I am going through the same problems lately. The last time the light went to blinking, the code revealed problems with a worn-out ring gear in the differential. I believe the VSS works off of that.

I replaced the differential with one with far less miles, from a salvage.

Now the light is blinking again, simultaneously with an ABS light and I stopped by today to read up on ABS light threads. And to make it more fun, my truck was hit by lightning 3 years ago and the speedometer has randomly worked/not-worked ever since.

I replaced the VSS as a first step but that didn't help. I have yet to be able to get a code out of this, including with at least one pretty good shop scanner from Snap-On and some cheapies offered free at those friendly local auto parts stores.

Since the ABS light comes on with the key, before the truck goes in motion at all, I am thinking the positive, simple solution will be the sensor on the transmission which the ABS system uses to determine when to engage the brakes automatically due to the speed differences between what the rear end is doing and what the transmission spin rates would indicate the rear end _should_ be doing - if I understand the ABS system correctly.

I do have all the grounds clean, including the body strap, and the wire from the VSS seems good as far as I can follow it. The area of the trans I need to get to is protected by skid plates though, so eventually I will probably wimp out and let a shop put it up on a lift and as a first step, simply clean the sensors connected to the trans, and hope that fixes the little gremlin.

Or I need to learn more about the ABS system and the blinking light...the light doesn't start blinking until I hit 1800 RPMs, just as the first shift up will occur in the trans.

Anyhow, perhaps 17 years of road grim on the trans might be a simple fix for you, or for me. I sure hope so.

 

The ABS "System" is independent and has it own controller based on A/C Voltage from Wheel Sensor Out Put.

The Flashing TCIL is caused by a Fault in the Transmission or its communication.

Neither interact to provide intermittent braking cycles. BUT, a loss of A/C Voltage will cause the ABS Lamp to Flash. The TCIL is independent of all others.

You need to acquire a Scan Tool capable of Reading the PCM's Interface for both the ABS and Transmission Module.

Otherwise, your just "guessing" on what the issue is without direction.

 

The cheap ones won't read Ford transmission codes. Snap On scanners will, but only if they have the Ford software. Without getting the codes you have almost no chance of fixing this.

You don't understand the system correctly. The transmission is connected to the rear end by the driveshaft. The transmission and the input to the rear end spin at exactly the same speed all the time, unless you have a magic driveshaft that can disconnect itself and reconnect itself.

 

So, got a text from my buddy, whose sitting at the shop that installed the trans. Apparently, the ABS module that we installed 2wks ago, is causing the OD light to blink.. That's what I'm hearing...

 

Sure it is...

 

P0500 is what's illuminating. Was told mechanic cleared the code but it comes back. Tried new vss sensor and problem is still present