| Author | Message | ||
     Eric Huff (Cersay) New Member Username: Cersay Post Number: 2 Registered: 02-2003 |
Where is the Computer for my Automatic Transmission and can it be rest??? 1997 Disco | ||
| Corey (Discobro) Member Username: Discobro Post Number: 60 Registered: 12-2002 |
Computer? What seems to be the problem? Check Engine light? What up??? | ||
| Eric Huff (Cersay) New Member Username: Cersay Post Number: 3 Registered: 02-2003 |
My Automatic Trans. will only move forward in 1st gear. Reverse and Park work too. After I gain speed I can shift up to drive or any other gear and the trans. works great. When I slow to a stop the Trans. spins free. This problem started after my Disco died in a carwash. Water sprayed under my hood and caused the engine to shut off. Ive got her running but now she won't shift. The fluid is new and the shop said they found nothing wrong when they looked for codes. Oh yeah, the Check Engine light is not on. Any ideas??? | ||
| Tbow (Tbow) Member Username: Tbow Post Number: 33 Registered: 12-2002 |
Eric.. What do you mean it spins free? I'm not sure the transmission is electronically controlled, but rather with pressures and a governor. I doubt that the problem your having is related to water under the hood, unless you got water in the transmission. From what your describing, you might have a sticky valve in the valve body. Are you sure your getting all 3 shifts and lockup? If you got low pressures, it could be a clogged filter not allowing enough fluid to be pumped through the system. When was the last time you changed the filter?? For what its worth, you might want to take it to a transmission shop and have them check the pressures. | ||
| Leslie N. Bright (Leslie) Senior member Username: Leslie Post Number: 1785 Registered: 02-2002 |
Eric, Tbow's on the right track... there's not a computer on a ZF in a '97 Disco, so, there won't be a CEL appear... I'm wondering about water ingresion into the transmission as a possibility, the dirty filter is also possible, maybe the torque converter is dying.... I dunno.... Kyle? thoughts? -L | ||
| Eric Huff (Cersay) New Member Username: Cersay Post Number: 4 Registered: 02-2003 |
The filter is new and the fluid has been changed twice since the problem started. When the Tow Truck driver unloaded my Disco, he tilted the flatbed all the way up, after he unhooked the winch cable. My Disco was sitting on an extreme incline in Park. The parking brake was not set!!! He jumps inside and forces the shifter to (N) and then rolls off the ramp. If you have ever parked on an extreme incline and not used your parking brake, then you know what I mean. I checked the parking Paw and it is not damaged. I know for a fact that the winch cable on the towtruck is there to let my vehicle down slowly and with much care. This is where it gets ugly. When the tow truck driver forced the shifter out of park, he and I both were suprised to hear a loud SNAP!!!! Is there any way my Trans could have been damaged by his creative unloading??? Oh yeah, what i meant by the trans. spinning free, is that I can hear a Whuuurrring sound in the trans, but there is no Power delivery. What im most concerned about is that the dealer claims they never started or drove the vehicle. All signs point to the Tow truck driver! Who should I direct my legal action toward??? Thanks for your input, Eric | ||
| Neil Flanagan (Electriceel) New Member Username: Electriceel Post Number: 40 Registered: 02-2002 |
Have you checked the CDL lever... Perhaps the tow truck driver knocked it slightly off. I had similar experience once with the same symptoms. Shifted through hi and low, locked and unlocked and the problem mysteriously dissappeared. | ||
| Tbow (Tbow) Member Username: Tbow Post Number: 34 Registered: 12-2002 |
If it moves when you put it in 1st gear then that rules out the CDL Lever which means that it's engaged. The answer to your question if damage could have been caused by the tow truck driver is YES. When he took it out of park and the snap could have been damage to the internal linkage connecting to the valve body. If there is no movement in "D" but it moves in 1st then you most likely have a stuck 1st gear valve. My guess is that there is some internal damage but you might not notice it. The reason it just spins is the transmission is basically in netural and no pressure is getting to the 1 gear clutch pack. Again, get it moving in first gear and make sure your getting all 3 forward gears and lock up. Look at your tach for the shift points and compare them with your speed. If your not getting your shift points at the right speed, then you have something internally out of adjustment or sticky valves in the valvebody. Again take it to a transmission shop (who know about ZF transmissions) and have them check it out. Good Luck. | ||
| Leslie N. Bright (Leslie) Senior member Username: Leslie Post Number: 1789 Registered: 02-2002 |
Oww.... sounds like a tow-truck-driver-caused problem, given that description.... I'm agreeing with Tbow on all acounts here.... This is something that a transmission shop needs to look at IMHO... Wishin' ya the best! -L | ||
| john baker (Johnb) New Member Username: Johnb Post Number: 7 Registered: 11-2002 |
transmission shops are sometimes very expensive,and sometimes know very little about our vehicles.maybe a shop specializing in rovers,dealer or aftermarket,might be a good first step.they should be capable of and have done pan drop trans services on other rovers. this experience will help them to determine if anything,like linlages/etc..,inside the trans have been damaged.from my experience it is best to do this sooner rather than later,as what might not be to serious now can develop int a major problem. just my .02 . oh yeah,i am the manager of a transmission shop,and have 26 years experience in the repair buisness.just because its a transmission shop does not mean they are able to repair a rover trans. | ||
| Eric Huff (Cersay) New Member Username: Cersay Post Number: 5 Registered: 02-2003 |
I know what you mean John. I have dropped the pan and I have gone through the valvebody. All my springs and valves are undamaged and the linkage seems to be in good shape too. I have a feeling im missing something. The only place that I know of around here (Indianapolis,IN) who works on Rover transmissions, is Tom Wood Land Rover. They are an R&R only shop. I have talked to them and all they want to do is replace my trans. Do you have any ideas on how i can find a good shop to check this out? Thanks for your help. I just can't see how my trans. got so messed up when it was sitting still. | ||
| Kyle Van Tassel (Kyle) Moderator Username: Kyle Post Number: 27 Registered: 11-2002 |
The whole thing sounds strange like maybe there are some peices of the story missing. BUT , sometimes and this is only SOMETIMES you get a sticky valve in the governor and running a car in reverse then sliding it up into park real fast while its still rolling backwards will rattle it enough so that it frees up. The pawl rattleing acrost the teeth of the Parking gear on the output shaft is what does this as its trying to engage. If you went through the valve body I would then suspect the two valves in the governor assembly. Perhaps they got pissed off from the whole incident and got stuck in their bores. Or the snap shook a deposit loose and it got into them. They are very touchy about being clean... Your symptom when sitting still however is very strange and wouldnt indicate this issue at all. Electronic or Hydraulic the thing should have ATLEAST 1rst and reverse so it seems there is something you arent saying or something you are missing. An electronic trans such as the 4L80E uses solonoids to control the fluid path to induce a shift and I am not aware of any rovers with such a system. What year is the thing ? Kyle "Blow me" | ||
| Leslie N. Bright (Leslie) Senior member Username: Leslie Post Number: 1797 Registered: 02-2002 |
Kyle, in his first post he said a '97 automatic, so we're talking about the normal D1 ZF..... I'm still wondering if the torque converter isn't behaving properly.... on other vehicles, I've seen torque converters die, and the thing starts slipping.... Mayhaps, though, biting the bullet and replacing the transmission isn't a bad way to go in this case.... FWIW.... Good luck! -L |
