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Posted: 3/16/2013 8:08:13 AM EDT
[#1]
Sounds like more than just a clogged filter. Synchroniser gear maybe?
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Posted: 3/16/2013 8:09:19 AM EDT
[#2]
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Posted: 3/16/2013 8:15:11 AM EDT
[#3]
Has the check engine light come on? Might be some transmission codes that could clue you in to what is going on. I'd hold off on a fluid and filter change until I was back in my own AO.
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Posted: 3/16/2013 8:22:04 AM EDT
[#4]
how many miles?
clutch packs might be gonzo. no magic potion you can pour inside to fix that |
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Posted: 3/16/2013 8:24:26 AM EDT
[#5]
I was gonna say punch it and wish for the best.
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Posted: 3/16/2013 8:26:41 AM EDT
[#6]
Quoted:
Has the check engine light come on? Might be some transmission codes that could clue you in to what is going on. I'd hold off on a fluid and filter change until I was back in my own AO. No CEL. I have an OBDII reader with me, so I'm waiting for that to happen. At this point, there isn't really anything I can do, so II'm just hoping that I make it back. There's ~185 miles of narrow winding highway between Texarkana and Ft Smith, and it'd be exceptionally shitty to break down there. |
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Posted: 3/16/2013 8:27:55 AM EDT
[#7]
Quoted:
how many miles? clutch packs might be gonzo. no magic potion you can pour inside to fix that On the van? 146k, but the transmission was rebuilt at 126k. |
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Posted: 3/16/2013 8:28:10 AM EDT
[#8]
1 hour maximum, minimal tools
https://www.youtube.com/watch?v=lYv58W3kU4I https://www.youtube.com/watch?v=MsdPAadc9fY |
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Posted: 3/16/2013 8:30:29 AM EDT
[#9]
Quoted: Quoted: Has the check engine light come on? Might be some transmission codes that could clue you in to what is going on. I'd hold off on a fluid and filter change until I was back in my own AO. No CEL. I have an OBDII reader with me, so I'm waiting for that to happen. At this point, there isn't really anything I can do, so II'm just hoping that I make it back. There's ~185 miles of narrow winding highway between Texarkana and Ft Smith, and it'd be exceptionally shitty to break down there. So hook it up and see what, if any, faults it shows. Most allow real time monitoring too. |
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Posted: 3/16/2013 8:34:06 AM EDT
[#10]
sawdust?
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Posted: 3/16/2013 8:37:54 AM EDT
[#11]
Quoted: I helped my aunt drive some stuff from the KC metro down to Louisiana. Due to the amount of cargo, we made the trip in our old family workhorse, a 1999 Astro with AWD. Everything was fine and dandy until we were in southern Arkansas. After climbing a hill or accelerating, there was a bit of a clunk as I released the throttle. I'm not sure if this was 4th gear or OD. I found that if I released the throttle very slowly, the clunk didn't happen. We stopped for dinner in Texarkana. Before leaving, I checked the fluid, and it seemed normal. The transmission was fine for the rest of the drive, so I had assumed that it was just too hot from pulling the weight over the winding hills of Arkansas. Yesterday afternoon, I took the van out, and it seemed normal until I tried to pass someone. It had a gnarly slip when it downshifted. It seemed as though the gear briefly caught and slipped a few times. It felt kinda like I had rapidly stomped and released the accelerator three times. I decided I should at least try for a fluid and filter change, but nobody in this town does it on Saturdays. I'm rolling out tomorrow. If you don't already have roadside assistance, call and put it on. Whatever version of it get you the most miles (= save some money and better choice of shops). I was about to drive about 1,000 miles... I called at about 10AM to put RA on my insurance. At 7pm my engine grenaded. Good luck. |
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Posted: 3/16/2013 8:40:21 AM EDT
[#12]
Rebuilt transmission... 20k on it...
Very possible could be something in the filter and fluid. Shavings from the new parts clogging things, getting partial line blockages. Assembly grease causing blockage, etc. Either way, in semi-famous words. "Punch it Chewy." |
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Posted: 3/16/2013 8:41:15 AM EDT
[#13]
Drive smoothly and don't push it hard. You'll make it fine more than likely.
Just don't get in a hurry |
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Posted: 3/16/2013 8:43:17 AM EDT
[#14]
The first description sounds like the lock up in the torque converter releasing.
The second sounds like friction disks burning up. 4L60Es often let go of 3-4 first, so you might be able to get home in 2nd gear, slowly. Posted Via AR15.Com Mobile |
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Posted: 3/16/2013 8:44:56 AM EDT
[#15]
Get a AAA or US Rider membership before driving back.
Personally I prefer US Rider but that's because they'll handle horse trailers; AAA won't touch them. |
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Posted: 3/16/2013 8:47:52 AM EDT
[#16]
Mine was slipping and it turned out to be the bands slipping or something like that. Cost $100 to fix. But I didn't hear a loud clunk
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Posted: 3/16/2013 8:48:56 AM EDT
[#17]
Quoted:
Quoted:
I helped my aunt drive some stuff from the KC metro down to Louisiana. Due to the amount of cargo, we made the trip in our old family workhorse, a 1999 Astro with AWD. Everything was fine and dandy until we were in southern Arkansas. After climbing a hill or accelerating, there was a bit of a clunk as I released the throttle. I'm not sure if this was 4th gear or OD. I found that if I released the throttle very slowly, the clunk didn't happen. We stopped for dinner in Texarkana. Before leaving, I checked the fluid, and it seemed normal. The transmission was fine for the rest of the drive, so I had assumed that it was just too hot from pulling the weight over the winding hills of Arkansas. Yesterday afternoon, I took the van out, and it seemed normal until I tried to pass someone. It had a gnarly slip when it downshifted. It seemed as though the gear briefly caught and slipped a few times. It felt kinda like I had rapidly stomped and released the accelerator three times. I decided I should at least try for a fluid and filter change, but nobody in this town does it on Saturdays. I'm rolling out tomorrow. If you don't already have roadside assistance, call and put it on. Whatever version of it get you the most miles (= save some money and better choice of shops). I was about to drive about 1,000 miles... I called at about 10AM to put RA on my insurance. At 7pm my engine grenaded. Good luck. We have AAA Premier. |
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Posted: 3/16/2013 8:50:19 AM EDT
[#18]
ugghhhhh..............been there done that.
Good luck.
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Posted: 3/16/2013 8:50:42 AM EDT
[#19]
4th gear is OD in that transmission. I would suspect the throttle linkage is not adjusted correctly (700R4/4L60 transmission).
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Posted: 3/16/2013 8:55:48 AM EDT
[#20]
Lost my transmission 20 miles west of Beaver, Utah, on my way home to CO from Vandenberg. Yea, that sucked, and cost me $3300. But, the guy literally worked all night to pull the old one, ordered a new one in the morning, and I was rolling 24 hours after I lost it.
Best of luck, and make sure that your phone is charged up.
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Posted: 3/16/2013 9:02:15 AM EDT
[#21]
Quoted:
4th gear is OD in that transmission. I would suspect the throttle linkage is not adjusted correctly (700R4/4L60 transmission). Should I just run it in 3rd when I hit the twists? |
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Posted: 3/16/2013 9:10:22 AM EDT
[#22]
Quoted: Quoted: 4th gear is OD in that transmission. I would suspect the throttle linkage is not adjusted correctly (700R4/4L60 transmission). Should I just run it in 3rd when I hit the twists? Below 60 MPH, you should be fine. |
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Posted: 3/16/2013 9:15:10 AM EDT
[#23]
Lucas Transmission FixGreat stuff 
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Posted: 3/16/2013 9:15:58 AM EDT
[#24]
Quoted:
Quoted:
Quoted:
4th gear is OD in that transmission. I would suspect the throttle linkage is not adjusted correctly (700R4/4L60 transmission). Should I just run it in 3rd when I hit the twists? Below 60 MPH, you should be fine. The van doesn't have an RPM gauge, so I have no idea how hard I'd be running it, but I'm pretty sure it'll be better to work the engine than the transmission. In 3rd, what does 60 MPH translate to at the crank? |
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Posted: 3/16/2013 9:16:00 AM EDT
[#25]
Just a thought, Bass. Maybe put a call out in the HTF and see if someone is close to you, and if they might be able to help out.
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Posted: 3/16/2013 9:20:35 AM EDT
[#26]
check your fluid levels, smell for a burnt smell, check for color. Hopefully it is still red and clear.
on hill manually shift to a lower gear, do you have a 3rd option on the shifter? Im leaning toward burnt clutches/discs... this is why I hate automatics. You just never know sometimes. |
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Posted: 3/16/2013 9:21:42 AM EDT
[#27]
In the event the clutches are in fact slipping, draining the fluid in the trans could do far more harm than good (in the short term)
As the clutches wear, they almost rely upon debris in the fluid for friction. Draining the "dirty" fluid could make you loose the trans permanently. Just food for thought. |
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Posted: 3/16/2013 9:23:11 AM EDT
[#28]
Quoted:
4th gear is OD in that transmission. I would suspect the throttle linkage is not adjusted correctly (700R4/4L60 transmission). 1999? That would be a 4L60E and electronically shifted. |
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Posted: 3/16/2013 9:25:31 AM EDT
[#29]
Quoted: Quoted: 4th gear is OD in that transmission. I would suspect the throttle linkage is not adjusted correctly (700R4/4L60 transmission). Should I just run it in 3rd when I hit the twists? If it is going to be downshifting frequently I would based on what you have described. I would bet if you drive it very easy you make it home, just ignore the problem, keep it shifting and slipping and you won't get near as far. Mechanical things respond to operator finesse. |
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Posted: 3/16/2013 9:47:45 AM EDT
[#30]
Correct me if I am wrong but doesn't the AWD system in these vans have a viscous coupling center diff?
I knew somebody who had an Olds Bravia (Chevy S10 Blazer with AWD and leather) that had all kinds of problems with the Xfer case in it. Dunno a solution for it, just saying it may not be the trans. |
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Posted: 3/16/2013 9:50:09 AM EDT
[#31]
Welcome to 90's Ford Trannys!
In my Explorer, it occasionally slips out of Overdrive on down shifts, and over revs like crazy. I have gotten in the habit of staying in D until up to speed and going into OD when cruising. Hills and long grades I get up speed, take my foot off the gas to let the RPM drop and drop it back to D. That keeps it from trying to shift under load with the RPM high. Keeps it from happening well. |
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Posted: 3/16/2013 10:12:49 AM EDT
[#32]
Quoted:
Welcome to 90's Ford Trannys! In my Explorer, it occasionally slips out of Overdrive on down shifts, and over revs like crazy. I have gotten in the habit of staying in D until up to speed and going into OD when cruising. Hills and long grades I get up speed, take my foot off the gas to let the RPM drop and drop it back to D. That keeps it from trying to shift under load with the RPM high. Keeps it from happening well. This is a Chevrolet. |
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Posted: 3/16/2013 10:24:40 AM EDT
[#33]
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Posted: 3/16/2013 11:06:20 AM EDT
[#34]
Is the fluid still nice and pinkish/red?
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Posted: 3/16/2013 11:16:19 AM EDT
[#35]
If the fluid isn't dark or burnt smelling, I'd look at elect type problems.
Roll under it and make sure the harness is secured down near the pan. IIRC, it is on the passenger side. It might be a flakey solenoid in the valve body assy. Some of the elect shift trannys have their own computer, and a reader can tell you where the problem is if electrical in nature, not sure when GM started that, but my mid-90s GM pickup has that feature. |
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Posted: 3/16/2013 11:21:24 AM EDT
[#36]
Quoted:
Quoted:
4th gear is OD in that transmission. I would suspect the throttle linkage is not adjusted correctly (700R4/4L60 transmission). 1999? That would be a 4L60E and electronically shifted. I would guess that it could be the electronic equivalent of the same problem. Throttle position sensor or whatever. |
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Posted: 3/16/2013 11:27:13 AM EDT
[#37]
Quoted:
Quoted:
Quoted:
4th gear is OD in that transmission. I would suspect the throttle linkage is not adjusted correctly (700R4/4L60 transmission). 1999? That would be a 4L60E and electronically shifted. I would guess that it could be the electronic equivalent of the same problem. Throttle position sensor or whatever. It is simple to adjust the throttle cable/tranny cable assy. Not doing it causes high rpm shifts and hard shifts. Been 5 years since I last did it, but a quick net search should turn it up for you. IIRC, no tools needed, just manipulate the cable and throttle lever at the same time. |
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Posted: 3/16/2013 11:40:55 AM EDT
[#38]
Quoted:
Quoted:
Quoted:
4th gear is OD in that transmission. I would suspect the throttle linkage is not adjusted correctly (700R4/4L60 transmission). 1999? That would be a 4L60E and electronically shifted. I would guess that it could be the electronic equivalent of the same problem. Throttle position sensor or whatever. TPS sensor is a pretty easy test if you have a multimeter. http://easyautodiagnostics.com/gm_tps_test/pickup_van_tps_1.php Typically they run horrible with a bad TPS, transmission problems are normally a "secondary" issue. |
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Posted: 3/16/2013 11:49:16 AM EDT
[#39]
Again..its a 4L60E..electronically controlled trans..the PCM uses sensor inputs to know when to upshift or downshift. There is no adjust ability.
I've seen a million of these come in..its a problem in the direct drum in the trans or the valvebody. If you have correct fluid level in the trans, and your fluid isn't dark black its probably not a quick fix fluid+ filter problem, it never is. That "rapid on/off gas" or "rumblestrip" vibration is clutch chatter..meaning somewhere along the line there is a hydraulic problem between the pump and the clutch pack responsible for third.  |
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Posted: 3/16/2013 2:35:00 PM EDT
[#40]
Quoted:
Again..its a 4L60E..electronically controlled trans..the PCM uses sensor inputs to know when to upshift or downshift. There is no adjust ability. I've seen a million of these come in..its a problem in the direct drum in the trans or the valvebody. If you have correct fluid level in the trans, and your fluid isn't dark black its probably not a quick fix fluid+ filter problem, it never is. That "rapid on/off gas" or "rumblestrip" vibration is clutch chatter..meaning somewhere along the line there is a hydraulic problem between the pump and the clutch pack responsible for third. I guess I should just hope I can get it back to the shop back home. |
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Posted: 3/16/2013 3:06:40 PM EDT
[#41]
Is there a detour around your twisty bits? It's not like you are trying to get across the Rockies
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Posted: 3/16/2013 3:08:55 PM EDT
[#42]
You should manually shift it, transmissions like manual shifts
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Posted: 3/16/2013 3:31:51 PM EDT
[#43]
Running in 3rd on certain stretches of US-71 between Texarkana and Ft Smith isn't a bad idea if you're loaded down heavy, even if the trans wasn't acting up. The owners manual may even recommend it. I wouldn't worry about over-revving the engine doing that. The difference between 3rd and overdrive is usually less than 15%, most likely less than 500rpm at the speed limit.
Besides, you're likely to be caught behind somebody in a tractor trailer struggling to make 45mph on that stretch of highway. Been there, done that a lot. Don't forget to use 3rd on some of those grades on I-540 north of Ft Smith. Those were actually steeper and longer than anything on US-71 south of Ft Smith. Always used to have me crawling along at 20-25mph when I was hauling coffee from New Orleans to Kansas City. |
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Posted: 3/16/2013 4:19:54 PM EDT
[#44]
Quoted:
Is there a detour around your twisty bits? It's not like you are trying to get across the Rockies I can take the interstate via Little Rock, but that adds 89 miles. |
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Posted: 3/16/2013 4:38:27 PM EDT
[#45]
check your fluids on a level surface, you may just be low.
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Posted: 3/16/2013 4:43:08 PM EDT
[#46]
Quoted: snip This is a Chevrolet. Shows you how much I know about minivans Might still do the trick though. Good luck! |
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Posted: 3/16/2013 4:44:42 PM EDT
[#47]
Torque converter failing.
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Posted: 3/16/2013 4:56:11 PM EDT
[#48]
Quoted:
Quoted:
Is there a detour around your twisty bits? It's not like you are trying to get across the Rockies I can take the interstate via Little Rock, but that adds 89 miles. Adds 89 miles, but subtracts 250 individual shifts on the twisties? Hmmm... not a tough choice for me. 
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Posted: 3/16/2013 6:10:51 PM EDT
[#49]
Quoted:
Quoted:
Quoted:
Is there a detour around your twisty bits? It's not like you are trying to get across the Rockies I can take the interstate via Little Rock, but that adds 89 miles. Adds 89 miles, but subtracts 250 individual shifts on the twisties? Hmmm... not a tough choice for me. I'll eliminate a bunch of gear changes by keeping her in third. I just can't drive like Clarkson.
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Posted: 3/17/2013 5:55:56 AM EDT
[#50]
Time to roll.
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