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Dodge Dakota Transmission Problems

694 messages,  Last post on Dec 03, 2009 at 7:32 AM

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#477 of 694 Re: is this a fair price [dustyk] by dge330 Dec 16, 2008 (5:42 pm)
Replying to: dustyk (Dec 16, 2008 2:33 pm) just kidding man i have a full size garage with all kinds of goodies and 3 tool boxes in it just trying to get a little help on this thing i do mostly older dodges and plymouths have a 69 charger doing right now
#478 of 694 by dge330 Dec 16, 2008 (5:47 pm)
took it to the local dealer to get trans trouble shot but they burnt the brakes up then wanted me to let them put complete brake setup on for 600.00 before they could fix trans.then took it to a guy that guaranteed me that he would find the problem .800.00 dollars later problem is still there .high gear and over drive is a hard shift and bad fuel milage .it has to be linked together .the guy said it showed a code of 0748 when it was shifting into overdrive so i thought i would start with that and a fluid and filter change while i was in there
#479 of 694 Re: A Creamepuff 1989 3.9 6cyl 4x4 Automatic 104k original miles [dustyk] by macshasta Dec 18, 2008 (8:54 am)
Replying to: dustyk (Dec 15, 2008 12:10 pm) I checked the numerous vacuum lines under the hood and all "looks" well. This 89 predates the Fuel Injection era and surely does have a lot of components and vacuum lines. In any event, here's the latest in the continuing saga. I test drove it a couple of miles shifting in and out of 4wd. Well I received a big surprise when all four wheels decided to "lockup". While it didn't skid, it did come to a "torc converter lock up engine stall". Upon restart, I limped home with a few thousand feet forward followed by a freewheeling with no coupling between engine and transmission. My bet is torc converter relay or controls. More suggestions are welcomed! BTW, I can pick up a shop manual from ebay for the 1988 4wd Dakota. Is there any major differences between my '89 and the older '88?   TIA macshasta Replies to this message: dustyk (Dec 18, 2008 1:32 pm) macshasta (Dec 18, 2008 4:59 pm) dustyk (Dec 18, 2008 6:08 pm)
#480 of 694 Re: A Creamepuff 1989 3.9 6cyl 4x4 Automatic 104k original miles [macshasta] by dustyk Dec 18, 2008 (1:32 pm)
Replying to: macshasta (Dec 18, 2008 8:54 am) You do have fuel injection. Its a throttlebody or dual-injector, manifold injection. The thing on top of the motor that looks like it might be a carburetor is the throttlebody. An '88 manual would be pretty close, I suspect.   I'm assuming that slipping the transmission allowed you to coast freely. If so, it could be a number of things, but I don't think its the torque converter. Based on your description, I'm afraid this transmission will have to come down and repaired.   Regards, Dusty Replies to this message: macshasta (Dec 18, 2008 4:59 pm) dustyk (Dec 18, 2008 6:08 pm)
#481 of 694 Re: A Creamepuff 1989 3.9 6cyl 4x4 Automatic 104k original miles [dustyk] by macshasta Dec 18, 2008 (4:59 pm)
Replying to: dustyk (Dec 18, 2008 1:32 pm) Even though it's bad news; thanks again, Dusty. I really appreciate your input.   So, now all I have to do is figure a way to get you to come to Mt. Shasta, CA so YOU can fix it for me. Not to worry about the single digit temperatures and constant snow fall...   Seriously, I'll let you know how this sucker unfolds and what the culprit turns out to be. I've already ordered the ebay shop manual so I can follow along when the shop gives me the play plan.   Later... macshasta Replies to this message: dustyk (Dec 18, 2008 6:08 pm)
#482 of 694 Re: A Creamepuff 1989 3.9 6cyl 4x4 Automatic 104k original miles [macshasta] by dustyk Dec 18, 2008 (6:08 pm)
Replying to: macshasta (Dec 18, 2008 4:59 pm) Mac,   I'm use to single digit temps and snow, although right now in Rochester, New York it's 30 degrees, but the forecast for tomorrow is much lower.   Please keep us posted on what it takes to get your truck running.   Best of luck, Dusty
#483 of 694 unsure of the problem by dbar Dec 25, 2008 (7:18 pm)
my 1998 dakota speedometer has been jumping up and down on speed. for instance i can be going about 20mph and it will register anywhere from 20 to 100 mph back and forth.now the transmission will shift erratically at times and sometimes stalling the motor.i have allready taken it to a mechanic and he put a speed sensor on the transmission and this didn't help. its worse when it's cold outside. also i had someone from work tell me that dodge autotrans has a check valve in the cooling line next to radiator and he advised me to to eliminate this and run a strait line in its place.has anyone else herd of this? Replies to this message: dustyk (Dec 26, 2008 9:46 am) dustyk (Dec 26, 2008 8:27 pm)
#484 of 694 Re: unsure of the problem [dbar] by dustyk Dec 26, 2008 (9:46 am)
Replying to: dbar (Dec 25, 2008 7:18 pm) "also i had someone from work tell me that dodge autotrans has a check valve in the cooling line next to radiator and he advised me to to eliminate this and run a strait line in its place.has anyone else herd of this?"   All Chrysler-built transmissions from the early eighties up have what's called a Anti-drainback valve in the system. This prevents the draining of the torque converter of fluid during long cool-down periods, such as overnight. Draining of the torque converter causes internal fluid loss and makes repriming of the torque converter problematic at start ups. This usually manifests itself as a lag before engagement after the transmission is placed into gear. Over time this can cause damage.   The anti-drainback valve is found either in the return cooling line or at the outlet port on the vehicle radiator. As transmission fluid becomes oxidized and contaminated with friction material silt and other particles, these anti-drainback valves are susceptible to becoming clogged. This can cause a partial or complete pressure loss resulting in lack of lubrication to the transmission's internal parts and eventually lead to various component failures.   Removing the anti-drainback valve from the system eliminates a potential problem area, but it can also cause other problems long term. The way to manage this situation is regular routine transmission maintenance, which basically means replacing the transmission filter periodically and the subsequent 4-6 quarts of ATF. Depending on the severeness of duty, they should be changed at 50,000 miles, or for severe duty vehicles, 25,000 miles. Personally, I recommend changing the filters at 25,000 miles on all vehicles.   Complete fluid flushes are also recommended under certain conditions. On vehicles that have not had routine service, I would advise replacing the anti-drainback valves along with the routine service. In some cases the entire cooling lines must be replaced if they have a build-up of silt.   More to follow........................   Regards, Dusty
#485 of 694 Me too by hadin Dec 26, 2008 (11:46 am)
"My dakota just started to delay in shifting from 1st to 2nd gears. The RPMs have to get to 2500-3000, the speedometer isn't working until the RPMs get to around 3000, then it shifts into 2nd gear and the speedometer starts working. No other shifting problems, no slipping. Brake light is on, ABS light and check engine light too. Any suggestions on what it needs? Speed sensor?" After reading this post......my 99 dakota has the same check engine, brake, and ABS lite on. My speedometer does not work at all. And the trans won't shift past 3rd. (former post going,going gone) Could this be the same dio. for me too. "Rear Wheel Speed Sensor or corroded terminals at the sensor's connector."
#486 of 694 Re: unsure of the problem [dbar] by dustyk Dec 26, 2008 (8:27 pm)
Replying to: dbar (Dec 25, 2008 7:18 pm) "i have already taken it to a mechanic and he put a speed sensor on the transmission and this didn't help. i have already taken it to a mechanic and he put a speed sensor on the transmission and this didn't help."   There are three types of speed sensors found on Chrysler-built trucks. There are front wheel speed sensors (one at each front wheel) that are for ABS brake operation and these electrical signals are sent to the ABS Control Module only. There are transmission speed sensors that measure the speed of the input shaft (545RFE) and the output shaft (42RE, 46RE, & 545RFE). These signals are sent to the Transmission Control Module (TCM) and Powertrain Control Module (PCM). The transmission speed sensors are not used for the speedometer.   The Rear Wheel Speed Sensor that is mounted in the rear differetial housing sends signals to the PCM and the ABS Control Module. This sensor is the source for speedometer operation. From your description, it sounds like your mechanic may have changed the wrong sensor. There was a component quality issue with earlier Rear Wheel Speed Sensors, and it has been a common source for your type of symptom and should not be an expensive repair. The sensor is mounted to the differential housing with one bolt and easily accessible.   Since the signal from the rear wheel sensor provides a signal for a number of computer operations, this could very well be the source of the shifting problem as well. On older vehicles it is also common that the terminals at the rear wheel speed sensor become corroded, so be sure to check this as well.   Best regards, Dusty

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