Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

140 MPH Speedo not working in my 87 Formula

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Old Dec 5, 2001 | 08:20 PM
  #1  
bzznczzn's Avatar
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From: Ormond Beach
140 MPH Speedo not working in my 87 Formula

IS this some kind of electrical/wiring problem? I bought the car without the speedo working and want to fix it asap. I have been told by alot of people that the Speedo's themselves are rarily the problem and tha it is usually a wire. Any ideas on where to look first?
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Old Dec 5, 2001 | 11:31 PM
  #2  
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From: LaFayette, NY
Car: '10 Subaru Forester
Engine: 2.5 Boxer
Transmission: 4EAT
Axle/Gears: 4.44
Pull the cluster out and check for corrosion on the contacts and for loose wiring... it is probably a wiring problem before the cluster. If you're adept with electrical/mechanical devices, you might want to tear down the cluster and check for broken gears and missing electrical connections. The problem is really too vague for a better answer than that.

Edit: You should purchase a Haynes repair manual before undertaking the removal of the dash assy. b/c there are some screws and bolts in less than intuitive locations that you will need to take off.

[This message has been edited by ChillPhatCat (edited December 05, 2001).]
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Old Dec 6, 2001 | 01:18 AM
  #3  
bzznczzn's Avatar
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From: Ormond Beach
I have a Chilton's and i'm very mechanical, so it shouldn't be a prob, just need to know where to look first. The info I got from the original owner is that it died during a fairly spirited highway run. Thats all I really know about the problem and I just got thecar yesterday, so i haven't had a chance to mess around to much. I already have the entire interior stripped out of the car, minus the guage cluster, so I don't mind pulling it and doing an inspection. Any other problem areas i hould check out?
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Old Dec 6, 2001 | 02:11 AM
  #4  
deadbird's Avatar
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From: So.west IN
Car: 87 Formula/ 00 Xtreme
Engine: TPI 305/ v6
Transmission: struggling t-5/ 4l60E
Axle/Gears: 3.08/ 3.23
The speedo is driven by a little electrical motor (it is not cable driven which you probably alredy knew), after nearly 15 years of service, it may have retired. I'd guess a bad VSS if you were getting a code.

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