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In and out of OVERDRIVE on a '93

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Old Jul 22, 2008 | 09:07 AM
  #1  
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Default In and out of OVERDRIVE on a '93

My '93 4-cyl LX has been quickly going in and out of overdrive (D4) at hwy speed. Is there a sensor to replace or something that needs to get cleaned out?
 
Old Jul 22, 2008 | 09:12 AM
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Default RE: In and out of OVERDRIVE on a '93

I say "overdrive" it might be the lockup torque converter....
 
Old Jul 22, 2008 | 09:43 AM
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Default RE: In and out of OVERDRIVE on a '93

Maybe adjustment of the downshift cable, from throttlebody down to tranny?
 
Old Jul 22, 2008 | 11:30 AM
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Default RE: In and out of OVERDRIVE on a '93

I just spoke to a Hon Mech and he said the O2 sensor might be leaning out the mix. Lean surge?
 
Old Jul 22, 2008 | 12:41 PM
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Default RE: In and out of OVERDRIVE on a '93

Mine had the same issue. turned out it was a combination of the transmission fluid and the temperature sensor going bad. I did the customary fill-drain 3 timer and replaced the sensor and now it stays in overdrive.
 
Old Jul 23, 2008 | 03:51 AM
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Default RE: In and out of OVERDRIVE on a '93

replace your t-stat
 
Old Jul 23, 2008 | 06:35 AM
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Default RE: In and out of OVERDRIVE on a '93

Where is the temp sensor located?
 
Old Jul 25, 2008 | 04:37 PM
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Default RE: In and out of OVERDRIVE on a '93

I agree with the suggestion to replace your thermostat. A very small drop in engine temp may prevent the tranny torque converter from locking up.
 
Old Jul 25, 2008 | 07:18 PM
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Default RE: In and out of OVERDRIVE on a '93

It's normal to go in and out of lock up at hwy speeds. I'd explain further but then I'll get a "404" error
 
Old Jul 26, 2008 | 08:47 AM
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Default RE: In and out of OVERDRIVE on a '93

Is the D4 light blinking? If yes, get the TCU code and post back. This will provide guidance on fault.

good luck
 



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