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1994.5 - 1997 7.3L Power Stroke Diesel  

Same transmission problem.... New Twist

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Old Jan 19, 2010 | 09:04 PM
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Same transmission problem.... New Twist

Ok well I posted a few weeks ago about my transmission having problems and I think that it was the torque convertor locking and unlocking. Bt it was only when the throttle was held at 1/4 throttle cruising down the highway and if i gave it more or less throttle it would lock back up until I when back to 1/4 throttle. Now it stays unlocked no matter what until I give it about 3/4 throttle and then it locks and takes off, and as soon as I go below 3/4 throttle it unlocks again no matter what speed. And another thing this is a very intermitant issue, it hasn't happened since I last posted so its very difficult to track it down. So my question is is there something that controls the torque convertor and has to do with the TPS? Or could it have something to do with the TRS? I'm really drawin a blank here on this one guys.

Thanks
Richard

ps if this makes no sense i appologize, I'll fix it tomorrow im going on 8 hours of sleep in the past 72 hours.
 
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Old Jan 20, 2010 | 04:31 PM
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Anything guys???
 
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Old Jan 20, 2010 | 04:36 PM
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Have you checked the wiring plug on the side of the trans ?. make sure the connection is clean & tight , also look at the PCM plug , look for the same ...Any fuses blowing ?
 
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Old Jan 20, 2010 | 04:39 PM
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I agree w/Rick. The only thing he forgot was to check the oil cooler
 
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Old Jan 20, 2010 | 04:44 PM
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None of the plugs look to be tight and clean, but I'll pull them apart and physically clean them and give them some dielectric grease just to make sure. None of the fuses are blowing. What should i be looking for at the cooler? And what controls the lock up of the convertor?
 
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Old Jan 20, 2010 | 04:51 PM
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PLEASE DISREGARD the OIL COOLER. The oil cooler should have nothing to do with it. (I was keeping Rick on his toes as he does to me). :-)
I read in another thread that a brake light could out could make the TC come on.
 
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Old Jan 20, 2010 | 05:08 PM
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ahhh you did mean oil cooler i thought just made a mistake and were thinking tranny cooler lol. Ya i checked my lights and they are all working because i knew that an out light has been known to do some effed up stuff.
 
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Old Jan 20, 2010 | 05:20 PM
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Hold off on the d grease , except (maybe) on the seals , a light coat ...
 
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Old Jan 20, 2010 | 05:58 PM
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Any specific reason why Rick? I always thought that it was good for that kind of thing but i could be mistaken. And what exactly controls the convertor and tells it to lock and unlock?
 
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Old Jan 20, 2010 | 06:35 PM
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It doesn't have any grease from the factory , so I don't use it ,, I rely on the seal...Bill(Mad Van) will have to explain further ...I only know a little about the cold shift sch....
 
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