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Old Oct 25, 2012 | 01:17 PM
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JimmyO1331's Avatar
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e4od transmission problems

I have a 1991 bronco with a 351w and the e4od trans.. The transmission is shifting late and hard and sometimes when i let off of the gas to slow down it shifts between gears up and down by itself... The only lights on the dash that are on is the Rear Anti-lock brake light and the speedometer is not working either.. Any ideas on where to start the trouble shooting to fix it? Thanks
 
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Old Oct 25, 2012 | 02:14 PM
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Fuel Injection Technical Library » How To Run a Self-Test Here is a link on how to get any trouble codes (even if no light on). Do that first, I would think.
Could also buy equus3145 code reader for around $25.00 to make life easier.
 
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Old Oct 25, 2012 | 04:51 PM
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The trans won't shift right if the speedometer isn't working OR if the ABS light is on. Most likely your vehicle speed sensor is bad.
 
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Old Oct 26, 2012 | 12:09 PM
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Speedo is cable driven so possibly a cable problem for speedo rather than VSS. Trouble codes may tell.
 
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