Gauges dont work?? Help!

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Oct 16, 2013 | 07:26 PM

Nicktitan

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Joined: Feb 2013

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From: Yakima Valley

Gauges dont work?? Help!

None of the gauges in my dash function, save for the speedo. Anybody know what might be the issue here??

Oct 16, 2013 | 08:47 PM

Gembone

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From: Las Vegas, NV

check your instrument panel voltage regulator. take a look HERE.

also make sure you have power and ground to the cluster.
Use a multimeter to check for signal from the gauges.

do the dash lights work?

Oct 17, 2013 | 01:28 AM

Nicktitan

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From: Yakima Valley

Yeah, the dash lights work. Some times you gotta wiggle the **** a bit to get them to come to, but they do work.

Oct 17, 2013 | 03:19 AM

NumberDummy

Ford Parts Specialist

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From: Simi Valley, CA

Quote:

Originally Posted by Gembone

check your instrument cluster voltage regulator (ICVR). take a look HERE.

OP has a 1970 F250.

1970 F100/350 & Econoline: Printed circuit boards (with Oil/Amp Gauges or Oil/Amp Warning Lamps) & ICVR: 1970 only.

Oct 17, 2013 | 04:50 PM

JEFFFAFA

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Joined: Mar 2013

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From: Phoenix, Az.

I'd bet the curcuit board on the back of the cluster is dried up and cracked. OP, with a flashlight look at the back of the cluster behind the dash. The curcuit boead is a thin plastic film with copper traces in it that links the gauges to the dash wiring. It gets dried up and cracks through the copper traces.

Oct 17, 2013 | 05:33 PM

Nicktitan

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From: Yakima Valley

I'll check it out, thanks

Edit: How much of a pain is it to fix/replace one of these, in case it is busted?
Also, would the speedometer and lights (including warning lights) still work, even if it was messed up??

Oct 17, 2013 | 06:25 PM

JEFFFAFA

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Joined: Mar 2013

Posts: 14,255

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From: Phoenix, Az.

Quote:

Originally Posted by Nicktitan

Sure could. Depends where the board may be cracked. But now that I know you have warning lights now I think your problem may indeed be in the dash's voltage regulator.
Cluster would have to be removed but that is easy. Speedo is mechanical cable.

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Oct 18, 2013 | 12:08 AM

Nicktitan

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From: Yakima Valley

Any way to check the regulator, besides dropping cash for a new one and seeing what happens?

And thanks for the parts info!! Thats very good to know

Oct 18, 2013 | 08:46 AM

#10

MavSprint

Elder User

Joined: Jul 2012

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From: Raleigh, NC

See Post #4 in this thread. Instrument Panel Voltage Reg. - Vintage Mustang Forums

Oct 18, 2013 | 09:34 AM

#11

Gembone

Logistics Pro

Joined: Nov 2012

Posts: 4,300

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From: Las Vegas, NV

From my earlier link

Quote:

You can test the IPVR without pulling the instrument cluster. Tilt the seat forward and pull off the orange wire from the fuel tank sending unit. When you probe the connector, your test light should flash on and off. You can also do the same test under the hood. Pull off the sender wire from the temperature sender and/or the oil pressure sender and probe those connectors...they should flash too.