SPEEDOMETER QUESTION

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SPEEDOMETER QUESTION

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Blazer >> Mechanical & Maintenance >> General Tech Help >> 1st Gen (1983-1994) Tech >> SPEEDOMETER QUESTION

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SPEEDOMETER QUESTION - 7/30/2008 6:34:05 AM

OLDMAN

Posts: 2
Joined: 7/30/2008
Status: offline

1991 blazer 4x4 auto trans and 4.3L

Speedo does not work all the time, but when it does the truck runs crappy. All other guages except the trip computer run fine.

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Your kidding. Right?

Post #: 1

RE: SPEEDOMETER QUESTION - 7/30/2008 10:15:27 AM

neo71665

Posts: 311
Joined: 12/18/2007
From: rison AR
Status: offline

The sensor on the tranny, the truck runs crappy cause once the speedo does work its getting a VSS signal and trying to relearn the correct way to run. Get the speedo fixed and I''ll bet you get better gas mileage also.

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1987 s-10 blazer 4x4, 2.8, 700r4, np207, 3.73 gears with a few mods.

(in reply to OLDMAN)

Post #: 2

RE: SPEEDOMETER QUESTION - 8/1/2008 10:13:05 AM

OLDMAN

Posts: 2
Joined: 7/30/2008
Status: offline

Thanks for the response. I have thought about the VSS going out, but wouldn''t it never work until replaced?
Also how do I determine if it is the sensor or the ECM?
Thanks,

(in reply to neo71665)

Post #: 3