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98 check engine light and O/D flashing

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Old Apr 8, 2009 | 06:19 AM
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98 check engine light and O/D flashing

My check engine light is on 99% of the time. That is followed by the O/D light flashing at constant rate 90% of the time. Auto zone says it is showing some sort of transmission code. The auto zone guy said it might be a sensor. The trans will go in and out of O/D and is not stuck completely out of O/D. It does have problems getting into that final O/D. So the gas mileage really sucks. Anyone had this experience? Any thoughts?
 
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Old Apr 8, 2009 | 08:33 AM
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O/D drum could be going out. Mine did the same and is costing me $1200, and that is at buddy price. Also while that happend it crakded the caseing and caused some damage to a couple of other things.
 
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Old Apr 8, 2009 | 10:47 AM
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Usually when the OD light is flashing, it causes hard shifting since the trans goes into limp mode. This is not good for the trans. Did AZ tell you what the codes were, and did they reset them?
 
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Old Apr 8, 2009 | 10:49 AM
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The OD ligt indicates a problem with the trans and that there are trouble codes.You need to get someone to read the transmission codes. Auto Zone typically can not do this. I'd take it by a transimission place and get them to read your codes.

EE
 
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Old Apr 8, 2009 | 11:11 AM
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And one more thing, stop driving the truck until you can get this sorted out. Otherwise the truck might be further damaging itself. A little problem might become a big problem.
 
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Old Apr 8, 2009 | 10:31 PM
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Thanks

Getting it looked at is a good thought. I hope I can do that tomorrow!
 
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Old Apr 9, 2009 | 03:02 AM
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After you have them pull and record the codes, make sure you get the codes reset. Post the codes back to this forum for opinions.
 
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Old May 8, 2009 | 03:21 PM
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Codes from Auto Zone

I finally got the thing pluged in and the code #1740. AZ says check the plugs. Wire to torque converter, an selenoid!

Thoughts?
 
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Old May 8, 2009 | 05:39 PM
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Has a transmission shop had the chance to look at the o/d light and any codes with it? No offense to any possible "big box" auto store workers here nor to you, but if it were my truck I might be more comfortable finding out from a tranny shop instead of a "big box" parts retailer.
 
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Old May 8, 2009 | 08:59 PM
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Have you reset the codes, and if so had the OD light come back on?
 
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Old May 9, 2009 | 06:51 AM
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No I have not reset the codes, and I have not been to a tranny shop. I was trying to get a best guess before I go to the tranny shop.
 
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Old May 11, 2009 | 06:01 AM
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Can AZ reset the codes?
 
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