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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 12-29-2010, 11:51 PM
Barry Eck Barry Eck is offline
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What PSOM stand for with Gauge CLuster?

We want to know what PSOM stands for in reference to a gauge cluster?
Is it the all the gauges with the tech,oil pressure, battery, speed odometor cable is hooked up to ?
Thank you ....
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Old 12-29-2010, 11:53 PM
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Kapusta Kapusta is offline
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Programmable Speedometer/Odometer Module
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...never owned an automatic in a Ford pick-up...
"Frankenstein" 94 F150 4X4 XLT with 92 5.0 and 89 ZF542
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Old 12-30-2010, 12:10 AM
Barry Eck Barry Eck is offline
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Kapusta,
Thank you for the quick reply, would be kind enough to give a little more information about the PSOM module where is located? what does it look like? What does a new one cost and what would a used one go for approximately.
Thank you in advance,
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Old 12-30-2010, 12:17 AM
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Kapusta Kapusta is offline
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I don't have much more info but running a search on this forum should yield a lot of good results.
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...never owned an automatic in a Ford pick-up...
"Frankenstein" 94 F150 4X4 XLT with 92 5.0 and 89 ZF542
Ford pick-ups I have owned:
63 F100 SWB 292 V8 3 speed w/od
72 Courier 1.8L 4 speed
85 F150 Std Cab LWB 300 I6 4 speed od
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Old 12-30-2010, 08:42 AM
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Quote:
Originally Posted by Barry Eck View Post
We want to know what PSOM stands for in reference to a gauge cluster?
Programmable Speedometer/Odometer Module (PSOM): A module that processes vehicle speed information for use in various electronic systems. The PSOM can be programmed to accommodate various tire and axle combinations.

The PSOM is a small computer that takes a AC voltage (Approximatly 3.5 VAC @ 30 MPH) generated by the VSS on the rear end (A variable reluctance sensor (VRS)) and uses a programmed conversion constant to convert the signal to the standard 8000 pulses per mile speed signal output and then drives the:
1. Provides information to the Speed Control Amp. for auto speed control.
2. Drives the Speedometer.
3. Keeps track of how many miles the truck has driven and sends this information to the Odometer read out.
4. Provides information to the PCM computer for the Transmission shifting, Ignition Timing and the Injector fuel control.


Quote:
Originally Posted by Barry Eck View Post
Is it the all the gauges with the tech,oil pressure, battery, speed odometor cable is hooked up to ?
NO.

The PSOM:
Click the image to open in full size.

PSOM Mounted on the back of the Speedometer.
Click the image to open in full size.

PSOM location:
Click the image to open in full size.

/
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Old 12-30-2010, 11:35 AM
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^^^ now that's a great info!
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...never owned an automatic in a Ford pick-up...
"Frankenstein" 94 F150 4X4 XLT with 92 5.0 and 89 ZF542
Ford pick-ups I have owned:
63 F100 SWB 292 V8 3 speed w/od
72 Courier 1.8L 4 speed
85 F150 Std Cab LWB 300 I6 4 speed od
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Old 12-30-2010, 11:35 AM
 
 
 
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