hi everyone

just developed a problem with my transmission having this horrible vibration when i take off. it vebrates badly and shakes the whole car, then as she gets a bit of speed up she evens out and changes gear. Very strange. If i start in 2 on the shifter i dont have the problem

my friend says its a sensor gone bad, but me thinks i may need to save up and replacer the tranny
can anyone tell me what problem i might be having here?

thanks

 

anyone?

 

engine/tranny type? vehicle? mods of any kind on the vehicle? give us as much info as you can so everyone can help you out.
But I'm not that great at this stuff yet so you won't get much from me.

 

oh yer sorry

its a 1999 civic ex

i actually topped off the tranny this morning with atf and drove it from cold and it was fine for about 20 minutes... then it went back to the same old judder and shake when taking off....

is that something to do with the oil loosing viscosity as it gets warm? or maybe there is the wrong atf in there to begin with?

 

is it a manual transmission? maybe somethings out of balance but for some odd reason is only when you're going slow.

 

To get rid of nearly all the old ATF, you need to drain and refill the transmission three times. Make sure you use Honda or Honda recommended ATF.

 

its an automatic
is that what it needs? oil replacement do you think? how much time between drain and refills?

 

You remove about 2/3 of the ATF when you drain the transmission because 1/3 remains in the torque converter. What type of ATF was in the transmission and what did you add? It's important to use the correct ATF. Based on the fact that there was a temporary improvement after one drain and refill, repeating this a couple more times is worth a try before considering other possibilities. Just drive around the block between each drain and refill.

 

I actually topped it off with about a cup full of lucas stop slip addative yesterday. She started up and drove like new for 20 minutes. My neighbour owned the car before me. he said the car developed these transmission problems a year ago. He did a fluid change last year and he put in regular brand Dexron III ATF . He said the car made no improvement..he reckons there is a sensor bad.

i noticed that when the car is doing the shaking thing you have to rev the car up to about 1500 revs before the car catches bite and drives, then it does the vibrating thing in 1st gear before it changes up. then it drives like normal for the rest of the gears. Currently Im dropping the car down on the shifter to 2 when starting off, then changing up to D4 when the car is moving. she seems to work fine like this. very odd

 

Any CEL codes? Does the CEL work?

 

no cel codes. the cel works.
i noticed there are 4 sensors on the tranny 2 on top and 2 underneath near the drains plug. The 2 underneath ones have wires taped and joined, looked to be a little burned. could these be causing any problems?

 

?

 

i flushed the fluid
it didnt do anything

 

My recommendation is that you begin to shop for a replacement transmission.

 

one last thing before i do...

i noticed the oil check stick is very loose when i fit it back in.
could this be causing the problem?
i mean is the transmission pressurized like a radiator ?
or does it make no difference?

 

It's odd that Honda engineered such a loose fitting dip stick. But it's normal.