Hi all,

 

I was hoping someone may be able to guide me on this one. Recently I've got my Zed back on the road and frankly loving it again. Well apart from the bl**dy autobox. I had always planned to convert it and have a manual donor car sat waiting, but for now the auto has got to stay. If I could get it working properly it would be great.

 

Basically in normal operation everything is fine, the gear changes are smooth. Overdrive button works, power and hold switches seem to do things!?! Dunno whether they're correct things or not?

 

Anyway whenever you bury your foot into the carpet the revs rise to about 6500 rpm and then seem to bounce like its on the limiter (where's the limit?) this happens for probably around 3 seconds and then the autobox seems to get the message and slots another cog in for me.

 

If you just accelerate quickly, no power light coming on, then it seems to work fine and actually accelerate better.

 

I have the lead and software to get some figures from it and when I last checked (a week ago) there were no logged errors for engine or autobox.

 

I've read on here about the TPS voltage, what should it be reading?

 

Thanks in advance.

0.42 on idle but sounds like a lazy box. when did you change the oil and filter last ?

Erm yep, that would be never then. Didn't think I'd done many miles in it, but looking at my mileage logs 10k. Fluid smells ok tho.

 

Since its come out of hibernation again, I was planning on dropping all the fluids once it had collected all the crap from being stood.

 

Better get some ramps.

The oil and strainer should be cleaned at almost the same interval as the engine oil, as its getting on in age now and will collect debris and sludge from around the box.

As it also works under line pressures, the increased chances of blockage problems is also possible, which will affect the box efficiency.

To set the TPS correctly, run the engine upto temp and at closed throttle you want to see 0.44v and WOT 4v, an incorrectly TPS will affect gear changes on an auto.

Anyone know where I can get an autobox filter then? The usual suspects don't seem to have one, nor does ebay.

nissan dealer

Nice one, will get one ordered tomorrow. Cheers

surely mike at MJP sells these ?

Been to the nissan dealer today and had a look at the parts data. Dealer can find no mention of a filter in the Auto box, took the chassis number and model number, still no luck. Anybody have a part number?

 

I've been through the service manual tonight and can't find any service interval relating to changing this filter. On the strip down info there is a gauze filter in there somewhere, is it just a flush and clean job rather than replacement?

 

Other thing I should have mentioned is its an import. I've read on another thread that the speed convertor or throttle position sensor could be causing the slight issue, Possible?

 

Anyway, some ramps bought. New filters and fluids bought, shame about the weather, gonna be a wet day tomorrow. :mad2:

There isnt a replaceable filter in the auto box, its as you discovered and the oil strainer can be removed and flushed/washed clean

 

A speed convertor wont affect the gear changes, but an incorrectly set TPS will.

A clean up and fresh oil can normally help, but if after all that and still no major improvement might be goodbye slushbox and get the manual done lol

My first auto box did this , got to the rev limiter popped about twice then changed gear , i actually liked it , it sounded cool ! lol.

A mate was following me once when it was getting dark and when it did the above he said flames were visible in the exhausts :cool3::cool3: .

Never did suss out what caused it though :scared:

Ok spent a bit of time on her today. New oil & filter and dumped the coolant. Looking at the state of both, I think another in 1000miles or so would be beneficial.

 

Checked the TPS and Conzult free is reading 0.44. Scan Tech Nissan is suggesting is flickering between 0.44 and 0.46. I can't find the WOT 4v anywhere, am I being thick here?

 

I'll need a gasket for the autobox before I dump the fluid on that so it'll have wait for a week or so.

 

Cheers

WOT, is wide open throttle, if when taking the reading you put the accelerator to the floor or using the throttle cable guide you will see the 4v reading.

Doh. So the answer to my earlier question was yes :stupid:

 

Easy enough to go and check tho. Ta

Well I report back with tales of joy and shame.

 

At the weekend after waiting for the arrival of a K&N recharger kit (the car has a blitz kit on it) I proceeded to remove said filter and discovered what a sh!tty mess it was in. After several cleans and a dry and re-oil it went back on the car.

 

I then tried to remove my old exhaust system and fit the Japspeed I've had waiting to go on. I originally wanted to decat it but after reading the stories on here of bust tub seals I decided I'd rather get some sat on the shelf before I take that step. I've had the back boxes off in the past and so they weren't too much of an issue but the bolts to the cats were solid (useless without oxy). In the end I gave up.

 

Went to work this morning and the results were clear. Once warmed up I gave it some right foot and the rev's went up to just below the limiter and then it changed gear, nice and smooth. Guess it was being starved of air.

 

Dropped in into the exhaust centre and left it with them to fit the exhausts. Picked it up earlier, much quieter and the car feels much smoother.

 

If anyone else is having this problem, might be worth a check. So now I just need to keep on top of the maintenance. :blushing:

Well I report back with tales of joy and shame.

 

At the weekend after waiting for the arrival of a K&N recharger kit (the car has a blitz kit on it) I proceeded to remove said filter and discovered what a sh!tty mess it was in. After several cleans and a dry and re-oil it went back on the car.

 

I then tried to remove my old exhaust system and fit the Japspeed I've had waiting to go on. I originally wanted to decat it but after reading the stories on here of bust tub seals I decided I'd rather get some sat on the shelf before I take that step. I've had the back boxes off in the past and so they weren't too much of an issue but the bolts to the cats were solid (useless without oxy). In the end I gave up.

 

Went to work this morning and the results were clear. Once warmed up I gave it some right foot and the rev's went up to just below the limiter and then it changed gear, nice and smooth. Guess it was being starved of air.

 

Dropped in into the exhaust centre and left it with them to fit the exhausts. Picked it up earlier, much quieter and the car feels much smoother.

 

If anyone else is having this problem, might be worth a check. So now I just need to keep on top of the maintenance. :blushing:

 

That's a result mate, glad you got it sorted :)