46RE Temp Sensor??
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Joined: Jan 2015
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Hi, I realize this is and OLD thread but I have just finished installing a 1998 47re in a 2001 truck and would like to share what I had to do to make the OD and TCC work. The problem was with the older gov press sensor (oval plug) temperature sensor works opposite than the newer sensor (rectangular plug). It would lock out OD because the PCM thought the fluid was -40*. I replaced just the plug for the gov prss sensor and installed the newer bracket that holds the gov press solenoid because it also retains the newer pressure sensor. Hopefully this might help someone having this issue.
Codey
Codey
Did it shift in to OD at all? I am having the same problem as above. It will shift into OD but only after driving for 20-30 min. Please Help! No codes are being thrown and other than that trans works perfect.
Grand Champion
Joined: Apr 2010
Posts: 5,011
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From: Meeker, CO
How cold is it outside where you live? Is your truck garaged or exposed overnight to the elements? Do you have an auxiliary cooler, whether factory installed or aftermarket? Did this problem just begin, or was it there in summertime, too?
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Joined: Jan 2015
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I bought the truck with a bad transmission. I bought a used one with 75k and put it in and has never worked right. I'm in northern California the weather is not extreme. Even hot days at 100 degrees its the same thing 20-30 min of driving and it will start working. I assumed it was a faulty transmission so I pulled it and had it inspected. Nothing was found to be faulty. I did not mention that the heater only blows warm. Can this in some way be related via a sending unit? No aux cooler installed.
Registered User
Joined: Jan 2015
Posts: 4
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I bought the truck with a bad transmission. I bought a used one with 75k and put it in and has never worked right. I'm in northern California the weather is not extreme. Even hot days at 100 degrees its the same thing 20-30 min of driving and it will start working. I assumed it was a faulty transmission so I pulled it and had it inspected. Nothing was found to be faulty. I did not mention that the heater only blows warm. Can this in some way be related via a sending unit? No aux cooler installed.
Grand Champion
Joined: Apr 2010
Posts: 5,011
Likes: 6
From: Meeker, CO
When the PCM sees the ATF temp being below 50F it locks out overdrive. I'd bet a dollar that that's what's happening here.
Administrator
Joined: Apr 2010
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From: Clayton MI
Mine doesn't..... (96 though... first year for the RE) I can hit fourth gear within half a mile of the house, regardless of how cold it is outside.......
Grand Champion
Joined: Apr 2010
Posts: 5,011
Likes: 6
From: Meeker, CO
Or maybe it wasn't brewer's droop? I dunno. It surely wasn't good sense.
Administrator
Joined: Apr 2010
Posts: 87,439
Likes: 4,218
From: Clayton MI
But why would you want to? That'd be like doing my mother without a rubber or a blindfold, while sober. Or at any rate I suppose it'd be like that -- ain't no one except my father ever tried, and not since he got brewer's droop while Nixon was in the White House.
Or maybe it wasn't brewer's droop? I dunno. It surely wasn't good sense.
Or maybe it wasn't brewer's droop? I dunno. It surely wasn't good sense.
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