1997 - 2003 F-150

Installing a tachometer?

Old Sep 16, 2010 | 06:20 PM
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texasdude12's Avatar
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Installing a tachometer?

I have a 99 XL, which means no tachometer I was looking at kits for a new dash with a tach on it. Ive never installed one before, is it difficult? What does the process entail? Any help/opinions would be helpful. Thanks in advance
 
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Old Sep 16, 2010 | 07:34 PM
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Get an XLT cluster with a tach, a service manual (Haynes or Chilton) and have at it. To me.... installation would be no big deal. If you have never done one... have confidence and plenty of patience

If it has digital odometer, I believe it would have to be re-calibrated to the PCM from a dealer
 
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Old Sep 16, 2010 | 11:19 PM
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I'm not sure what you mean by 'dash kit'.
Basicly, you can't install a "conventional" ignition driven tach
on these motors because there is no "single" point ignition signal to sample, that offers a true representation of RPM.
The factory dash tach ends up being driven by a signal from the PCM.
As far as I can see, there would be no calibration for a tach because it samples the engine RPM but there is a calibration for the speedometer that depends on rear gear ratio and tire size.
This calibration is made in the VID software word, in the PCM program.
Last I knew, MSD might have an adapter circuit that samples and "converts" to a represenative of the true engine RPM.
Good luck.
 
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Old Sep 18, 2010 | 10:50 AM
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Note: I was referring the "re-calibration" in reference to the odometer. Correct me if I'm wrong, but haven't I read that a cluster change that contains a digital odo has to be "corrected" to the PCM ?
 
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Old Sep 18, 2010 | 11:29 AM
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To put a XLT cluster in your XL, you're going to have to deal w/ the PATS issue, or the truck won't start. I believe this can only be done by Ford.
 
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Old Sep 18, 2010 | 11:11 PM
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probably more hassel then its worth then
 
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Old Sep 19, 2010 | 12:06 AM
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what about a mini tach in the A pillar?
 
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Old Sep 19, 2010 | 04:53 AM
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Originally Posted by fairlaner
To put a XLT cluster in your XL, you're going to have to deal w/ the PATS issue, or the truck won't start. I believe this can only be done by Ford.
Correct, to install a OEM cluster with a tachometer in a 99+ truck, you have to:

1.) Disassemble the panel to where you can readily take out the cluster.
2.) Drive to a Ford dealer with your panel apart
3.) Swap in new cluster (plug and play) and let the service department flash the ECU. Its about $75 for a diag. fee and it takes ~1 hr from what I'm told.

Otherwise if you swap the cluster and aren't at a dealership, you just made the worlds most expensive lawn ornament.

Originally Posted by texasdude12
probably more hassel then its worth then
Although mine was easier to swap, I still think its worth it. A tach is a must-have.

Originally Posted by 97isnotold
what about a mini tach in the A pillar?
Did you bother reading before posting?

Originally Posted by Bluegrass
<snip> Basically, you can't install a "conventional" ignition driven tach on these motors because there is no "single" point ignition signal to sample, that offers a true representation of RPM.<snip>
 
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Old Sep 19, 2010 | 11:02 AM
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Originally Posted by texasdude12
probably more hassel then its worth then
depends, when I changed the XLT cluster from my '02 Lariat I gained 40 MPH on the speedometer and the built in boost gauge to impress the ricers

trust me it was well worth it

Or you could just get a tuning device like the SCT Live wire, gryphon CS or aerofroce inteceptor (IF they are compatable with your truck)
 
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