| From | Message |
stevedak
Dodge Dakota
JOIN HERE
1/08/2007
16:30:43
|
 Subject: transmission slip
IP: Logged
Message:
While driving under steady conditions, at 65 mph, my trans slipped. The RPMs went from about 2250 rpm to 3000 rpm for 2-3 seconds and then returned to normal. This happened 2-3 times over 2 days. I checked the fluid level and needed to add a pint. It happened again after topping off the fluid. The trans seems normal in all other gears. I changed the filter and fluid about 2000 miles ago, did band adjustment too.
Is the transmission starting to go out???
Could the band adjustment cause this??
Can a bad solinoid cause this??
Is there something I can do to troubleshoot and isolate the problem (i.e. pressure check)??
92 Dakota, 3.9L, auto trans, trans cooler, 165K miles, several mods
|
GB2000
GenIII
1/09/2007
00:22:27
| RE: transmission slip
IP: Logged
Message:
I have that same issue...please post here if you find out what's causing it. I'll do the same if I find out.
|
boomer
Dodge Dakota
JOIN HERE
1/09/2007
06:37:09
| RE: transmission slip
IP: Logged
Message:
just a thought...are you sure its slipping? could it possibly be downshifting from overdrive? my truck has downshifted for almost no reason before, other than it was cold and I may have put a lil more pressure on the accelerator.
|
Bob Lincoln
Dodge Dakota
JOIN HERE
1/09/2007
08:14:06
| RE: transmission slip
IP: Logged
Message:
I had this exact problem last winter, and no fault codes. It was downshifting from 4th to 3rd on the slightest inclines at highway speed, with no increased throttle pressure. Turned out to be the Throttle Position Sensor. Changed it and it never recurred.
|
GB2000
GenIII
1/09/2007
16:14:00
| RE: transmission slip
IP: Logged
Message:
Mine's done it with both TPS sensors I had...even after doing the "TPS Mod". If what he's describing is like my problem...it's not downshifting. It'll be running at a steady speed, then suddenly it'll rev and you'll notice the tach go up and then it goes back to the same RPMs and continues at the same speed. Doesn't rev long enough to lose any speed and it doesn't surge, jerk, or anything...just a short rev. I've got a feeling it's a sensor...or what somebody else thought was that it could be the torque converter messing up...unlocking and then locking back up?
|
GB2000
GenIII
1/10/2007
03:59:27
| RE: transmission slip
IP: Logged
Message:
Okay...to add to it...if I burn my tires off, my transmission works worse than ever. Even quite a while afterward. Yeah, I run my truck waaaay harder than most do...but it's a truck...I keep everything pretty well-maintained...and if I break something, I fix it (or like in those thread...I try and diagnose it so I CAN fix it).
Tonight my tires were cold...which always causes me to lose traction real easily if I get on the gas too much...so when I was going around tight corners in the industrial park I work in I was punching it and breaking the tires free.
A few miles later, I pulled a corner kinda tight at about 30+ mph and once I got straightened up, I floored it (like if I were going to pass a slow driver real quick)...didn't break the tires free. It downshifted and took off like any vehicle is supposed to when you floor it...then suddenly the tranny went out of gear completely...my tach shot up past 5200 RPMs and bounced off the rev limiter a couple times before I could let off...then it surged about 4 times and went back into gear...
If it keeps this up, I'm either trading the stupid thing in or gonna cave and give someone my left nut to fix it. Now I'm kinda pissed I didn't buy the tranny I found on Ebay...BRAND-NEW from the factory...$750 shipped.
|
Bob Lincoln
Dodge Dakota
JOIN HERE
1/10/2007
08:23:39
| RE: transmission slip
IP: Logged
Message:
Or you're gonna hurt or kill someone. How ould are you? 16? Grow up.
|
stevedak
Dodge Dakota
JOIN HERE
1/10/2007
08:28:13
| RE: transmission slip
IP: Logged
Message:
My problem is the same as what GB2000 described, no jerk or surge. THe only reason I notice is because the engine gets louder. I think the torque converter lock/unlock would only result in 200-300 RPM change. My change was about 700-800 RPM. I never thought about the TPS. I have a spare so its a no brainer to swap it out and see what happens.
Thanks for the comments...keep em coming
|
GB2000
GenIII
1/10/2007
13:35:06
| RE: transmission slip
IP: Logged
Message:
Bob...don't even turn this into a lecture...I haven't wrecked my truck since I was 16. I work directly for the owner of the industrial park. The businesses in that area of the park were all closed for the night therefore leaving the area completely empty. Not to mention it was dark out and the park is well-lit so I can see if there would be any vehicles who may have been curious to come down that way. Any damage I do is fixed by me so it's not exactly that big of a deal there either...I just fix it off the clock rather than get paid for it. Not to mention I operate heavy machinery at work...I'm pretty sure I can SAFELY outmaneuver you and any other older more "experienced" drivers on the road so long as I'm not taking my tires to their limits on the corners...which I don't. But whatever...this is a thread about our transmission problems...if you wanna start a thread about how to drive safely, go for it.
|
Mike Stager
Dodge Dakota
JOIN HERE
1/10/2007
17:54:13
| RE: transmission slip
IP: Logged
Message:
GB2000, I have the same exact problem with my truck with a supposed "new tranny with 30,000 miles on it" when I bought it. If I start the truck up, take a left hand turn and punch it, the next gear it shifts into is neutral ( at least it seems that way ). I immediately let off the gas and I'm in gear and never have another tranny shifting problem. Only under heavy load, and almost always after turning a corner ( thought it might be sucking air into the pump, but my fluid level is fine ) This has to be something simple. I can sit in "D" and turn the tires over in the parking lot no problem.
|
OBIO3
Dodge Dakota
JOIN HERE
1/10/2007
21:58:35
| RE: transmission slip
IP: Logged
Message:
I would rather think this has to do with your Oil/Filter change. Did you use the correct fluid? Are you sure you adjusted the bands correct? You never mentioned the year/type of truck. I recall others talking of this problem after servicing the trany and the answer was the filter. Your going to need someone that has experanced this for a posible fix or do a search.
|
GB2000
GenIII
1/10/2007
22:23:27
| RE: transmission slip
IP: Logged
Message:
It was doing it before I changed the oil and filter...that's the reason why I changed it. Was hoping the filter was just dirty. Never adjusted the bands. Didn't wanna screw it up. Refilled with Mopar ATF+4. I bought the truck with 36k miles and it did it OCCASIONALLY then...and it's just gotten progressively worse until last night. Last night's the first time it's ever gone COMPLETELY out of gear...usually it'd overrev on the shifts or at the very worst...buck a couple times. I also did the tv cable adjustment and that didn't help it either. Mine's a 98 2wd with the 42RE transmission.
Oh yeah...Mike, mine's the same way. I can powerbrake like a mofo and don't have any problems until after I've gotten traction and it goes to shift a lil further down the road. Heck, on wet roads I can sit there spinning and it'll shift fine even then...then it'll catch...downshift properly...then when it goes to upshift, bucks and surges. I'm thinking it may be something along the lines of a valve body problem. I emailed a place bout 66 miles from here last night...if I can get my taxes paid off for this year and get financing somewhere, I'm gonna trade my truck in. Emailed the place last night bout a 97 Dakota 4x4 with the 5.2L engine...only 95k miles on it. Really sharp truck. If they get back with me and I can discuss financing with them, I'm gonna try and get it.
|
Mike Stager
Dodge Dakota
JOIN HERE
1/11/2007
00:03:17
| RE: transmission slip
IP: Logged
Message:
Well, I just bought this truck this fall, so I'm hoping to find a solution sooner than later. If I had a garage to work in, I'd be elbow deep into it. I just don't like the cold that much to work on it right now. I'm figuring as long as I don't push the truck, I should be able to make it until spring, or when I get a chance to put it in a garage and work on it for a couple of days. When/if I find the solution(s ), you bet your ass I'll make a new post for everyone, as I hope anyone else that finds a solution to this would.
|
GB2000
GenIII
1/11/2007
01:56:46
| RE: transmission slip
IP: Logged
Message:
Yeah, I definitely would post about it...I got access to a garage and a lift...but don't have enough knowledge of the tranny to get elbow deep into it. Without having to buy a new tranny afterward. lol
Also...Bob...I wanna apologize for the response earlier...while I did wish to show that I wasn't causing anyone any real danger, I took it a lil too far and turned it into a personal attack. I don't mind debating...but that was a lil more than "debate material." And on that note...if I get a chance...I may actually start a thread about driving safely...got a few points I'd like to bring up.
|
Mike Stager
Dodge Dakota
JOIN HERE
1/12/2007
00:40:53
| RE: transmission slip
IP: Logged
Message:
I wonder if it doesn't have more to do with the engine side of the equation than the transmission side. Considering this happens at WOT only for me, not almost WOT, but full out WOT, and the fact that suddenly after having the codes cleared, I'm getting a stumbling, a little popping and it acts like I have a huge dead spot in my throttle all of a sudden...I wonder if the computer was running off default values for some components ( TPS, etc ).
The codes I've pulled are for the Idle air valve and the O2 sensor voltage being too high ( probably has to do with the lack of a catalytic converter at the moment ), and my mpg has just sank to roughly 10 mpg! I was getting near 18.
It's damn cold though! 17 for the high tomorrow...crimeny I love Minnesota!
|
?
Dodge Dakota
JOIN HERE
1/15/2007
18:15:09
| RE: transmission slip
IP: Logged
Message:
Some info for you fellows.
http://www.dodgeram.org/tech/transmission/automatic/AT_band_adj.htm
and
http://www.dodgeram.org/tech/transmission/automatic/AT_diagnosing.htm
and re pressure
http://www.dieseltrans.com/phpBB/viewtopic.php?t=51
BUT - you better know what you doing if you attempt
any of these..
|
J and J Auto
GenII
1/16/2007
01:44:04
| RE: transmission slip
IP: Logged
Message:
both the rh and re trans use the same change valve
in the trans
If it enguages solid and pops in and out most
likly its a sticky change valve
located right next to the presure adjusting
screw side of body
try some lube guard red first it will help
sticky valves
or replace it with a new redesigned valve from
sonnax transmissionpartsusa.com
also the distance between the spring seat and body
must be .900
Its a very common prob the re can also be caused
by the pressure sensor and sol but that will
usualy also cause other intermediate shifting
problems
the last gear is torque converter lock if it slips
all the time you need a new converter usualy its
just the change valve
I have only replaced 1 converter for that reason
but it was caused by a bad valve that also was
replaced
have fun
you need to lower the body to remove this valve
there is 1 screw on the top of the adjuster
spring bracket
Larry
J&J Auto
|
stevedak
Dodge Dakota
JOIN HERE
1/22/2007
13:24:54
| RE: transmission slip
IP: Logged
Message:
OK guys, I replaced the TPS and now everything is normal. The TPS I removed was cracked thru the center of the unit.
|
GB2000
GenIII
1/23/2007
17:48:00
| RE: transmission slip
IP: Logged
Message:
Even though I've used two different TPS sensors (both were used)...I may have to buy a NEW one and see if that's what's causing my problems. I'm gonna be pissed if I've just got two bad sensors.
|
GB2000
GenIII
1/24/2007
20:15:53
| RE: transmission slip
IP: Logged
Message:
Bought a new TPS sensor tonight (I'm gonna miss that $72...) and installed it...too early to tell if it fixed my overrevving problems and MASSIVE gear hunting. I was putting my truck through hell trying to replicate the probs and only managed to make it buck once very briefly...and that could simply be because my tv cable isn't adjusted properly (I think). I'll post more when I get a chance to drive it from a cold start a couple times and see how it drives. ...and when I removed my TPS sensor, I realized the sensor on it was the same one that I've always had probs with. Apparently while I HAVE used two different sensors, I had switched back to my modified one...and I gotta feeling my truck wasn't having any problems with the other one...but we'll see. Don't wanna speak too soon.
|
GB2000
GenIII
1/25/2007
19:29:45
| RE: transmission slip
IP: Logged
Message:
UPDATE: I wasted $72. As soon as I get my taxes figured out (I have to take my own taxes out where I work), this truck is gone. I'm gonna trade in for a 97-03 V8 4x4 Dakota...extended cab prolly.
|
| | P 1 Next Page>> |
