I have a 92 f-150 and looking at some clusters and found some on ebay that i like. but they have a tachometer and i dont would i still be able to use it and have the tach function. it is an aftermarket cluster.

 

I believe that even if you don't have a tach your truck is wired for one.
Check THIS EXCELLENT ARTICLE
It helped me with my cluster swap - I already had a (broken) tach.
Good luck!

 

Yeah the wiring is already in place for a tach. After market cluster? Never heard of one, can you post a link? Thanks.

 

http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW

 

I've seen these before and I'm under the impression that this auction is for the gauge faces only and not the actual cluster. Hard to tell from their auction. To me the price doesn't suggest that its an entire cluster they are selling.

 

A tach cluster will work in place of a non-tach cluster and is a smart upgrade! One thing to ask, "make sure that the cluster you are looking at has not been programmed more than 5 times or it is useless. The PSOM can only be programmed 6 times for changes in tire size and rearend differences then it will not let you program it again."

 

thanks guys for the info.

Jim- what gears did you have before you changed them? I have the same size tires as you with 3.55 gears how do you like the 4.11s? how brand gears did you go with? with you being an ex-ford master tech. what do you think it would ruffly cost to have someone install them? my dad went to school for diesel tech but doesnt do that anymore but we could probably do it ourselves but it would be in the garage with jack stands. how long did it take you to do it?

 

I had 3.55's before. The 4.10's are nearly perfect but only nearly because I use my truck to tow a travel trailer and anything else I can hook it up to. I did it myself at the dealership with a truck lift and it was a major job. The front diff case is aluminum and should be stretched to install the carrier into it. I did it when I installed the lift which save some hassles but it still took the better part of a day even with the factory tools available. I would think it would be the most part of a grand to 1500 to have some one else do it but not sure on that. I used US Gear for the gears and replaced all the bearings and seals since they had over 100k on them which actually wasnt that much more. So over all the front and rear suspension has been completely rebuilt and should last for a long time.

 

but, per the link posted by diskguy, the normal procedure for upgrading to a w/tach cluster involves swapping the existing PSOM into the new cluster, so this shouldn't be an issue.... right ?

I "won" a '94 cluster t/wach on eBay for $52 - it was shipped yesterday, so I'll be finding out about this procedure soon

 

let me know how it goes

 

If they look the same size, shape and pins in the back then it would not. I was just making a statement as it would be nice to have a back up and most people just swap the whole cluster instead of swapping out parts and pieces.

 

Yeah, you were bidding against me. I missed out on it because I was out of town.

 

I tried a '92 cluster in my '94 and it didn't work. I still have the '92 so if yours doesn't work, let me know.

 

Why can it only be programmed 6 times? Cant it be reseted or something?

 

no that is the way Ford had them made. From the 1995 Ford Truck CD Manual:


Pinpoint Tests

PINPOINT TEST F: SPEEDOMETER/ODOMETER READS INACCURATELY


F5 RESET CONVERSION CONSTANT


l Reprogram speed conversion constant using the following procedure:

-- Locate the dealer mode programming enable single-terminal connector. The connector is located at the bottom of the instrument panel below the center of the glove box. On all vehicles, the dealer mode enable wire is Circuit #567 (LB/Y).

-- Insert metal clip in service wire panel connector. Clip other end to vehicle ground while the key is in the OFF position.

-- Turn key to RUN (not crank) position while holding down the trip odometer RESET button on speedometer. Release RESET button.

-- Speedometer will prove out (sweep across dial and back). The English/Metric and revision levels will be displayed. The last number of the display is the dealer mode programming lockout count. This count shows the number of allowable conversion constant changes remaining. When the count is zero (0), no additional changes can be made to this instrument cluster. If a conversion constant change is required, a service instrument cluster must be ordered. Refer to this section for ordering information.

-- Press and release RESET button again and PSOM conversion constant (without the decimal point) followed by the word CAL.

-- Press and release the odometer SELECT button as many times as necessary to change conversion constant to the correct value.

NOTE:
Pressing and releasing the RESET button to lock in the new Conversion Constant reduces the number of times the PSOM can be reprogrammed by one count. The module can only be reprogrammed six times. If you change your mind and want to go back to the old conversion constant, turn the ignition switch off before you lock in the new constant.

-- When the correct new value is displayed in odometer window, press and release the RESET button to lock in the new conversion constant.

-- Turn the key off and remove the ground wire. Verify proper speedometer operation.

-- Is conversion constant now set to the desired value?

NOTE:
The module can only be reprogrammed six (6) times.