Auto box slow selection in D

man of kent · 17th March 2011, 18:31

The Jatco box on my diesel tourer seems a bit slow to select D when waiting at traffic lights which means occasionally I hit the throttle too soon followed by a big clonk from the box which is not recommended. I've had a few autos and my box is slow in comparison.

Its just had new 402 ATF but still does it. The oil level has been carefully measured - Exactly 4 litres taken out, 4 litres put back in.

Any solutions or is the box just slow to engage? I now leave it in D with my foot on the pedal unless its a long wait but this can only blind the car behind with the brake lights - all too common nowadays.

geoffm · 18th March 2011, 13:30

Have the same thing on my 75 cdt saloon, but not all the time it appears to do it when the box has not reached running temp.
I tend now not to knock it out of D when stationary through fear that one day that clonk will turn into something much worse.

scouseeric · 18th March 2011, 13:55

Quote:

Originally Posted by man of kent

The Jatco box on my diesel tourer seems a bit slow to select D when waiting at traffic lights which means occasionally I hit the throttle too soon followed by a big clonk from the box which is not recommended. I've had a few autos and my box is slow in comparison.

Its just had new 402 ATF but still does it. The oil level has been carefully measured - Exactly 4 litres taken out, 4 litres put back in.

Any solutions or is the box just slow to engage? I now leave it in D with my foot on the pedal unless its a long wait but this can only blind the car behind with the brake lights - all too common nowadays.

I was told that moving the selector in and out of D habitually can cause damage to the solenoids. Use the h/brake at lights now.

Eric

Mr Edd · 19th March 2011, 18:31

I had a similar problem a few years ago. Would be okay after it warmed up and I did a restart. Turned out to be two solenoids had gone (there nine in these boxes). Needs an Auto specialist who can do a diagnostics test, usually costs about £30.

Cost me £250 to get the two solenoids replaced. I would strongly recommend that you get a fluid change at the same time unless it has been done recently.

Edd

man of kent · 26th March 2011, 15:30

Good point about not putting it into N . Much cheaper to replace burnt out stop lamps than solenoids. I know you can leave it in D with the brakes on for quite a while but how long? I think the issue is overheating the fluid?

hinged_bap · 26th March 2011, 17:36

I also leave her in D unless i know i'm going to be stuck for ages. She also goes thud if I go from N to D too quickly.

matt1301 · 26th March 2011, 18:08

I always leave a slight pause or I find the same thing if you put it in D and hit the gas hard straight away it thumps into gear.
But... I also found this on my dads Lexus and on a Mercedes courtesy car I had which where both about a year old. The Merc was actually quite bad between R and D it took ages to engage!

Out of interest do you have a synergy? Because I find my box isn't as smooth with it turned on

FLYER · 26th March 2011, 18:25

I always let the box move the car before hitting the throttle , this gives a smooth acceleration from stationary.

.

FLYER · 26th March 2011, 18:27

Quote:

Originally Posted by man of kent

The Jatco box on my diesel tourer seems a bit slow to select D when waiting at traffic lights which means occasionally I hit the throttle too soon followed by a big clonk from the box which is not recommended. I've had a few autos and my box is slow in comparison.

Its just had new 402 ATF but still does it. The oil level has been carefully measured - Exactly 4 litres taken out, 4 litres put back in.

Any solutions or is the box just slow to engage? I now leave it in D with my foot on the pedal unless its a long wait but this can only blind the car behind with the brake lights - all too common nowadays.

you need to repeat the ATF change , you have only replenished half of the fluid , you need to remove and replace again as you did the first time , in that way you have changed about 80 per cent of the fluid.

madone · 26th March 2011, 19:45

Quote:

Originally Posted by FLYER

I always let the box move the car before hitting the throttle , this gives a smooth acceleration from stationary.

.

For me after driving my baby for 6 years this is the way to do it. Soon learnt after I first put her in D and hit the accelerator too soon, not a nice feeling from the box

If stuck for a while its in N or P and I never leave her in D with handbrake on

17th March 2011, 18:31	#1
man of kent Loves to post 75 tourer auto diesel Join Date: Nov 2010 Location: Nordelph, nr Downham Market Posts: 419 Thanks: 0 Thanked 0 Times in 0 Posts	Auto box slow selection in D The Jatco box on my diesel tourer seems a bit slow to select D when waiting at traffic lights which means occasionally I hit the throttle too soon followed by a big clonk from the box which is not recommended. I've had a few autos and my box is slow in comparison. Its just had new 402 ATF but still does it. The oil level has been carefully measured - Exactly 4 litres taken out, 4 litres put back in. Any solutions or is the box just slow to engage? I now leave it in D with my foot on the pedal unless its a long wait but this can only blind the car behind with the brake lights - all too common nowadays.

19th March 2011, 18:31	#4
Mr Edd From the Horses Mouth 2012 Honda Oddessay and 1996 Ford Ranger Truck (Splash) Join Date: Oct 2008 Location: Fort Myers, Florida Posts: 1,045 Thanks: 0 Thanked 13 Times in 7 Posts	I had a similar problem a few years ago. Would be okay after it warmed up and I did a restart. Turned out to be two solenoids had gone (there nine in these boxes). Needs an Auto specialist who can do a diagnostics test, usually costs about £30. Cost me £250 to get the two solenoids replaced. I would strongly recommend that you get a fluid change at the same time unless it has been done recently. Edd __________________ I'd be dyslexic if I could spell ti.

26th March 2011, 18:08	#7
matt1301 Avid contributor 75 Cdti Auto Join Date: Dec 2009 Location: Bishops Stortford, Hertfordshire Posts: 151 Thanks: 1 Thanked 3 Times in 3 Posts	I always leave a slight pause or I find the same thing if you put it in D and hit the gas hard straight away it thumps into gear. But... I also found this on my dads Lexus and on a Mercedes courtesy car I had which where both about a year old. The Merc was actually quite bad between R and D it took ages to engage! Out of interest do you have a synergy? Because I find my box isn't as smooth with it turned on __________________ http://i694.photobucket.com/albums/v..._matt/sig2.jpg Miss my old ZT but back in the fold with a 75

26th March 2011, 18:25	#8
FLYER Banned rover75 cdti AUTO TOURER 160 bhp. Join Date: Jul 2010 Location: Glasgow Posts: 35,346 Thanks: 2,985 Thanked 3,685 Times in 2,463 Posts	I always let the box move the car before hitting the throttle , this gives a smooth acceleration from stationary..

18th March 2011, 13:30	#2
geoffm Regular poster Rover 75 cdt saloon Join Date: Apr 2010 Location: Hastings Posts: 83 Thanks: 0 Thanked 0 Times in 0 Posts	Have the same thing on my 75 cdt saloon, but not all the time it appears to do it when the box has not reached running temp. I tend now not to knock it out of D when stationary through fear that one day that clonk will turn into something much worse.

26th March 2011, 15:30	#5
man of kent Loves to post 75 tourer auto diesel Join Date: Nov 2010 Location: Nordelph, nr Downham Market Posts: 419 Thanks: 0 Thanked 0 Times in 0 Posts	Good point about not putting it into N . Much cheaper to replace burnt out stop lamps than solenoids. I know you can leave it in D with the brakes on for quite a while but how long? I think the issue is overheating the fluid?

26th March 2011, 17:36	#6
hinged_bap Gets stuck in 75 CDT Conn SE Auto saloon Join Date: Jun 2010 Location: Southampton Posts: 773 Thanks: 134 Thanked 104 Times in 81 Posts	I also leave her in D unless i know i'm going to be stuck for ages. She also goes thud if I go from N to D too quickly.