98 1500 with 46RE with codes P1757 and P0740
Legend
Joined: Nov 2014
Posts: 8,098
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Figured I'd update. Decided to drop the transmission pan to check what the oil looked like and it was pretty dark. So then I pulled off the filter and she was plugged solid. Someone told me a good way to check the filter is to try and shine a light through it and I couldn't seen anything.
So I swapped out the filter and replaced 7 quarts of oil. Took it for a drive and it seems to be running better now. There was minimal metal on the magnet but the oil looked dirty. Maybe this will take a couple oil changes to finally get it running right. Shifts better, starts better, actually creeps when I put it in gear... That's everything I really needed fixed.
Just out of curiosity, what do you guys run in your transmissions? I think it's rated for ATF+4 or the Mopar factory stuff but some friends suggested running Dexron VI.
So I swapped out the filter and replaced 7 quarts of oil. Took it for a drive and it seems to be running better now. There was minimal metal on the magnet but the oil looked dirty. Maybe this will take a couple oil changes to finally get it running right. Shifts better, starts better, actually creeps when I put it in gear... That's everything I really needed fixed.
Just out of curiosity, what do you guys run in your transmissions? I think it's rated for ATF+4 or the Mopar factory stuff but some friends suggested running Dexron VI.
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Rookie
Joined: Nov 2019
Posts: 86
Likes: 5
From: Manitoba, Canada
So I never got a chance to get a pressure gauge to measure the pressures and then this happened last night. I was driving home and decided to back into my driveway instead of driving in and when I put the truck in reverse it barely limped backwards at 2000rpm. Drove it forwards and also it seemed to not want to go forwards then either. Babied it down the street to a parking lot and then this happened.
Once again it almost felt like it was starting in a higher gear than supposed to be and I had to rev high to hit it. It was 11:30 so I parked it on the side of the road. Came back to it today and it seemed to be a little sluggish still but I made it to work, leave it in drive and it seemed boggy but put in first and away she goes.
I still don't think this is a rebuild situation because I don't get any grinding or scraping it just doesn't activate. This is a couple clips of what I was dealing with last night
Once again it almost felt like it was starting in a higher gear than supposed to be and I had to rev high to hit it. It was 11:30 so I parked it on the side of the road. Came back to it today and it seemed to be a little sluggish still but I made it to work, leave it in drive and it seemed boggy but put in first and away she goes.
I still don't think this is a rebuild situation because I don't get any grinding or scraping it just doesn't activate. This is a couple clips of what I was dealing with last night
Administrator
Joined: Apr 2010
Posts: 87,482
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From: Clayton MI
First clip was a little short..... really didn't see anything there.... (not that there wasn't anything to see.... I just couldn't catch it.)
Unplug the 8 pin electrical connector at the trans, go for a drive. You will have ZERO automatic function, so, you will have to start in first gear, and shift up/down as appropriate. You also won't have O/D, or TCC. Yes, it will set some codes.
See how the trans behaves. It should go into the gear you tell it to, when you tell it to. If you still have issues, it's likely rebuild time. Only other thing I can think of is the bands being adjust to tight.... but, that wouldn't be intermittent, that would be a problem 100% of the time.
Unplug the 8 pin electrical connector at the trans, go for a drive. You will have ZERO automatic function, so, you will have to start in first gear, and shift up/down as appropriate. You also won't have O/D, or TCC. Yes, it will set some codes.
See how the trans behaves. It should go into the gear you tell it to, when you tell it to. If you still have issues, it's likely rebuild time. Only other thing I can think of is the bands being adjust to tight.... but, that wouldn't be intermittent, that would be a problem 100% of the time.
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Rookie
Joined: Nov 2019
Posts: 86
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From: Manitoba, Canada
Right on, I'll try that again. That told me the sensor/solenoid were bad in the first place so what can it hurt. Just drove it again that time and I stopped at a stop sign, gave it gas to go, it started rolling forwards (I was pointing uphill slightly), and then it downshifted and then I was driving normally. It's weird.
Figure I might order another filter and gasket and drop the pan again and see what's going on.
And sorry about the slow video. It was late and I was just trying to document it for my friend. It just kept reving higher and higher and then all of a sudden like I threw it into gear and it started rolling.
Figure I might order another filter and gasket and drop the pan again and see what's going on.
And sorry about the slow video. It was late and I was just trying to document it for my friend. It just kept reving higher and higher and then all of a sudden like I threw it into gear and it started rolling.
Legend
Joined: Nov 2014
Posts: 8,098
Likes: 318
Right on, I'll try that again. That told me the sensor/solenoid were bad in the first place so what can it hurt. Just drove it again that time and I stopped at a stop sign, gave it gas to go, it started rolling forwards (I was pointing uphill slightly), and then it downshifted and then I was driving normally. It's weird.
Figure I might order another filter and gasket and drop the pan again and see what's going on.
And sorry about the slow video. It was late and I was just trying to document it for my friend. It just kept reving higher and higher and then all of a sudden like I threw it into gear and it started rolling.
Figure I might order another filter and gasket and drop the pan again and see what's going on.
And sorry about the slow video. It was late and I was just trying to document it for my friend. It just kept reving higher and higher and then all of a sudden like I threw it into gear and it started rolling.
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Rookie
Joined: Nov 2019
Posts: 86
Likes: 5
From: Manitoba, Canada
Ok so it's still acting a little weird without the connector plugged in. Not entirely sure what to think of it right now.
First video is shifting 1-2-3 and 3-2-1 twice . At one point I said downshift instead of upshift but you know what I mean. Still not any change between 1-2 and 2-1 from what I feel.
Second video is shortly after I made the first I jumped out to check trans fluid and seemed fine. But then it was needing a high rev to get it to roll.
First video is shifting 1-2-3 and 3-2-1 twice . At one point I said downshift instead of upshift but you know what I mean. Still not any change between 1-2 and 2-1 from what I feel.
Second video is shortly after I made the first I jumped out to check trans fluid and seemed fine. But then it was needing a high rev to get it to roll.
Captain
Joined: Jan 2016
Posts: 593
Likes: 8
From: Shawnee, KS
Have you looked down into the plug on the transmission to make sure some crap didn't fall down in there and stopping the connector from making good connection? I had a chunk of sand fall down in mine when I pulled my valve body. Just pulling the plug wouldn't seem as easy to get something in there, but I suppose it could happen.