C230 1997 auto: only first and reverse. Does not change over-
As stated- gearbox does not change over. No noise from box. Car "lurches" forward when drive is engaged. Reverse is fine... Am not sure of the state or level of the gearbox oil. What could be the problem? Mileage 260k
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Firstly check if you have gearbox oil in it seldomly so happens that a gearbox makes a noise but when it does make a kind of winding noise the gear inside the box has gotten damaged. Sometimes when lucky if you add gearbox oil the noise goes away.
what gear box, there are 3 or4. 3/4/5speed and transfer case.? what tranny what box. does it make noise parked.? or only moving> stated all modes of travel , with and with out noise. neutral is one. does running free mean coasting. on mine i have 5 forward gears, reverse,neutral 2wd./4H and 4L. lots of modes.
Sorry no idea here iam a europeon mechanic with limited experiance in auto boxes ,but on the back of the torque converter is two lugs that drive the front oil pump and i can only suspect that you didnt line these up ,when you change a auto box you mount the torque converter onto the gearbox first then put the whole assembly in not leave the converter on the engine and push the box up or you end up with a problem like this
When the engine is idling and the gear box selector is in Neutral all the internals of the gearbox are rotating. Pushing in the Clutch disconnects the drive from the engine to the gearbox but it takes a few seconds for the gears in the box to cease rotating. All the forward gears have synchromesh so there will be no crunching noise ifa forward gear is selected immediately the clutch is pushed in before allowing the gears to stop spinning. On the other hand Reverse has No synchros and therefore selecting reverse before waiting a few seconds for the gears to stop spinning will produce the crunching noise you have described.
So it pays to wait a second or two after pushing in clutch before Reverse is selected to minimise the crunch and if the clutch appears to be working correctly in normal driving ,then no adjustment is necessary.
if you have an automatic gear box , then it is very possible that you have reverse band is broken inside gear box , , light will come on because switch for reverse lights may be actuated by shift lever not gears .
there is a foward band and reverse band in auto gerabox's so if you are able to drive forward this gearbox will need to be repaired or replaced .
if manual gearbox , you may find a reverse linkage loose , or gears dammaged in gear box .
good luck hope this helps
This is sometimes called the lurch, disconnect the battery for 30 mins to re-set the "memory" in the gearbox, this should solve your problem, the gearbox will re-learn your driving style. Make sure you have your radio code before you disconnect.
Well in a auto gear box you have in the pan on g/box a filter and a forward oil pump and a reverse pump also a set of bands forward and a reverse plus a valve body assy which has a load of small pistons and springs and oil ways ,but by the sound of your problem is that the forward pump isent going through the body valve for some reason so its taking a short cut and bypassing 1,2,3, and trying to to top first.
So sorry to tell you that the answer to your problem is you have to go to a Auto Matic gearbox shop and they will have to fix it ORget a second hand box and fit it yourself.
Let me know how you go. are you on Skype Ron