Questionok will do i did check out some of the readings myself, i believe i got these codes 12, 33, 42, 66,21, 55 , where can i see what these are?
Thanks
john Z
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Followup To
Question -
Hi roland, i have a 95 chrysler with a bad transmission, bet you never heard that before, hahahah. Well it goes into i guess what they call "limp mode" not all the time but more times than not. It will stick in 2nd gear and RPMs boom upwards! sometimes if i shut the car off and restart it fixes itself ,but sometimes not. I dont want to spend a lot of mopney trying to guess whats wrong with it, i have done some research so i dont look like an idiot. The accumulator piston seems to be something people talk about? ? please let me know of anything you know about this
thankyou so much
john Zuffinetti
Answer -
Hi John,
Rather than expounding on the accumulator piston, I would suggest that the most efficient way to find the cause of the limp-in is to get the transmission controller readout for the presence of fault codes. '95 was a transition year with new models introduced and old one being phased out so whether your car has a single OBD-II plug that reads out both the engine and the trans controller or has two separate 6-pin plugs (engine controller in the engine compartment, data bus plug in the cabin for the trans controller) depends upon which model you have. In any case, go to either a dealer or a competent independent trans shop to get the readout accomplished. Ask for: the fault code number, the name of the code, what it means, what the proposed repair is, and how much it will cost. Then write me back with a follow up question and I can verify the proposal via the transmission manuals that I have. The range of causes and solutions is so great that this is the only way to sort out what needs to be done so as to avoid the 'catch all' of doing a rebuild at a cost of $2k.
Roland
AnswerHi John,
Those codes most likely are the ones stored in the engine controller, not the trans controller, but one of them is relevant to the trans. Here is what they mean:
12 battery supply voltage to the controller disconnected recently.
33 there is a problem with the a/c compressor clutch or the a/c refrigerant pressure signal voltage is too high or too low
42 there is a problem with the autoshutdown relay circuit
66 there is a problem of some sort with the communication of digital data between the trans controller and the engine controller, or the body computer and the engine controller, or no messages on the data bus are being received by the engine controller.
21 One of the oxygen sensors is not responding to changes in the oxygen content of the exhaust gas.
55 end of readout
The 66 may explain what is causing the limp-in of the trans. However, it would be good to get the trans code readout with the proper readout tool. The engine controller can be read with the ignition key which is how I presume you got these numbers. But there is no other way to get the trans codes than attaching a readout box to the appropriate plug. You didn't tell me which model you have there.
If the issue is one of lack of communication of digital data from the trans controller to the engine controller then that same readout box can be used to analyze the functioning of the digital data bus to determine where the fault lies and what needs to be done. It is more likely that a Chrysler dealer will have the tool to do that analysis to repair the data bus if necessary. I do notice that the failure of the engine controller to have its data successfully received at the trans controller (trans code 21) does not normally cause a limp-in to occur. So there may be some other reason that will come out as a different code # when the trans controller is properly read out.
So that is what I can tell you based on the engine controller readout.
My inclination would be to find a competent Chrysler shop and have their mechanics see what they can determine to be the fault codes and give you the information that I said was relevant in my first answer.
Roland
