As usual i have a problem with my autobox. Was driving in town today stopped at some lights they went green i pressed the accelarator nothing happened. I lost every gear nothing worked engine would just rev. Turned it all off started it up and i got drive back for about 5 - 10 seconds which allowed me to at least get her safe.

 

The box only went in a month ago. It made no nasty noises or grinding, it changed gear perfectly, didnt leak, no burning smells. Before it went in i checked the oil left in the box and it was still perfect color.

 

I suspect somehting electrical or a sensor, it was just so sudden. Any ideas?

 

Thanks Rob.

**Bump**

 

Anyone got anything i was hoping somebody would have cheered me up by saying i just needed to clean some electrical plugs or replace a sensor. Gotta go tow it home in a few hours :(

i wouldnt recomend towing, but each to there own , if its on a A frame you wont have any issues

did the cooler a nd torque converter get cleaned out when the new box went in?

As usual i have a problem with my autobox. Was driving in town today stopped at some lights they went green i pressed the accelarator nothing happened. I lost every gear nothing worked engine would just rev. Turned it all off started it up and i got drive back for about 5 - 10 seconds which allowed me to at least get her safe.

 

The box only went in a month ago. It made no nasty noises or grinding, it changed gear perfectly, didnt leak, no burning smells. Before it went in i checked the oil left in the box and it was still perfect color.

 

I suspect somehting electrical or a sensor, it was just so sudden. Any ideas?

 

Thanks Rob.

 

Classic case of debris blocking the strainer to a point where all line pressure is lost and drive. Switching the engine off allows the fluid to run back through the strainer and flush it clear, however it blocks again and your stuck in a cycle.

 

Ok options is to drain and remove the gearbox sump pan, remove the strainer and clean out, clean out the cooler lines and cooler, reassemble and refil.

 

The chance is it will work again maybe 6 months or could be 6 days who knows, got to be worth a go though.

 

The thing is the debris is most likely clutch or brake band material and will not get better, as I said its still worth ago to give you some time to think about your options. Good luck

 

Jeff TT

Thanks, ill give this a go tomorrow. I think this is this car's third box now jeez. Gonna be worth my while going manual soon. Gonna save me money in the long run lol.

Thought id update this, i just finished having a little look under the car. I drained the gearbox oil it was brown and only about 2 litres came out i couldnt beileve it tbh. Lesson for everyone if you take your Z to a garage make sure they have a clue.

 

Hopefully not too much damage has been done but by the state of the oil that came out i reckon ill need a new box soon again.

might be ok. id have strong words with the guys who fitted it.

 

i would fill it up, run it for a few miles the drain and refill to get rid of the bad oil. might even be worth doing this a few times. atf is alot cheaper than a new box.

At my wits end now tbh. I did as suggested drained it removed the sump cleaned it, removed the strainer and cleaned that with petrol. Put it all back together and filled it with Comma Automatic Transmission Fluid from halfords.

 

Moment of truth started it up and everything seemed fine no noises. Selected a gear and she moved. Took it for out for about 10 mins then it happened again total loss of gears no power going from the engine what so ever.

 

Now when i start the car sometimes i get drive after a while and if i do its slugish. If i dont get drive and just wait the revs dip down and it starts creeping but thats it. And before you say it yes i should get a manual i just dont have over a grand to spend :)

Did you flush out the autocooler and lines ? they will almost certainly be contaminated , sometimes a second flush will work, but nothing is certain.

Jeff TT

No i didnt clean the cooler actually. You think it blocked up the strainer again? Cause that was pretty fast thought id get a day or two at least.

No i didnt clean the cooler actually. You think it blocked up the strainer again? Cause that was pretty fast thought id get a day or two at least.

 

If contamination is still somewhere in the system it will blcok within minutes if not seconds.

 

What did the debris look like? did it look like dull coloured fibres or shiney metal bits?

 

Jeff TT

it was more like sludgey fibres, oil that came out was brown as well. The autocooler i have though was from the original box which had serious issues with grinding gears.

 

Like i said i did the first flush and it sorta solved the problem for 10 mins so it has to be related.

 

Just like to say thanks for the help though Jeff i know this is a pretty boring problem as it crops up a lot. Ill give it a second clean see what happens.

it was more like sludgey fibres, oil that came out was brown as well. The autocooler i have though was from the original box which had serious issues with grinding gears.

 

Like i said i did the first flush and it sorta solved the problem for 10 mins so it has to be related.

 

Just like to say thanks for the help though Jeff i know this is a pretty boring problem as it crops up a lot. Ill give it a second clean see what happens.

 

Your very welcome to any advice that helps you out, keep us posted on any developments.

 

Jeff TT

Sorry i took so long updating this but i only just finished the work today. The car is working great now. This time i flushed the oil cooler with the the garden hose it actually had a blockage in it which shifted eventually. I then used an air compressor to get all the water out.

 

Thankyou Jeff im well chuffed atm. To anyone with gearbox problems try this it only takes your time and gives good results may even buy you some time on a dieing box.

A somewhat unconventional way to clear the cooler lines but hey if its has worked then thats great!

 

Jeff TT

Interesting reading!!

 

My box has just lost 2nd 3rd and Overdrive.

 

Any sugestions?

 

Andy