VERY occasionally lately, she seems to have a 1./2 second
think before engaging drive. The scenarion:
I’m stopped at a junction, waiting an opportunity to get
out. I hit the throttle and then…nothing (other than a
rise in revs, of course). Maybe 1/2 a second later, we’re
off. There’s a slight ‘clunk’, very slight, just before we
start moving.
I get the same thing sometimes when reversing.
Throttle…thinks…we go.–
JagFab, 1988 JaguarSport XJR 3.6 (RHD)
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In reply to a message from JagFab sent Thu 25 Jan 2007:
I am no expert on auto transmisions at all, but one would ask the
question - when was the last time your transmition oil was changed,
and filter cleaned? We do tend to take these things for granted
sometimes. There might well be a much more technical answer Jag-
Lovers might sugest, but I always start at the basic first.
Peter UK (Lancs)–
highbank
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In reply to a message from highbank sent Thu 25 Jan 2007:
As a self-confessed non-expert, I served up the tranny as
the culprit but could the cause be elsewhere in the drive-line?
To answer the question, I don’t know when those items were
looked at but certainly not in my ownership (since Sept 04).–
JagFab, 1988 JaguarSport XJR 3.6 (RHD)
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Your 4HP22 transmission can’t think – it doesn’t even have a
brain/electronics like the 4HP24 used in 90 & later models
If you have the selector continually in D, and the transmission “slips
out of gear” when engine RPM drop while stopped, the first thing to
check is low transmission fluid level. If that is not the problem, then
changing the fluid & filter may help, as the cause is likely
insufficient fluid pressure at low RPM, possibly from thick, gummy
fluid, and a partially-plugged filter.
I would address the issue immediately, as you may sustain clutch damage
operating the vehicle with low pump pressure.-----Original Message-----
From: ian.northwood@mail.com
VERY occasionally lately, she seems to have a 1./2 second
think before engaging drive. The scenarion:
I’m stopped at a junction, waiting an opportunity to get
out. I hit the throttle and then…nothing (other than a
rise in revs, of course). Maybe 1/2 a second later, we’re
off. There’s a slight ‘clunk’, very slight, just before we
start moving.
I get the same thing sometimes when reversing.
Throttle…thinks…we go.
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Your 4HP22 transmission can’t think
Yes, I know. I had it in mind that it was doing that thing
that us whio are over a certain age do…you know, where you
go into a room and have momentarily COMPLETELY forgotten why
you went there in the first place, then suddenly it comes
back to you.
Thanks for the advice. Luckily, I just found out that
there’s an auto transmission shop 3 units from where I’m
currently working.–
JagFab, 1988 JaguarSport XJR 3.6 (RHD)
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I concur, change the fluid and check/change the filter. My caddy did
the same thing till I changed the fluid.On 1/25/07, JagFab ian.northwood@mail.com wrote:
VERY occasionally lately, she seems to have a 1./2 second
think before engaging drive. The scenarion:
I’m stopped at a junction, waiting an opportunity to get
out. I hit the throttle and then…nothing (other than a
rise in revs, of course). Maybe 1/2 a second later, we’re
off. There’s a slight ‘clunk’, very slight, just before we
start moving.
I get the same thing sometimes when reversing.
Throttle…thinks…we go.
Visit the Jag Lovers homepage at http://www.jag-lovers.org for exciting services and resources including Photo Albums, Event Diary / Calendar, On Line Books and more !
–
Jim Isbell
“If you are not living on the edge, well then,
you are just taking up too much space.”
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It could be and sounds like a sticky valve body or failing pump or
clogged filter and screen. Mouse juice might swell the O rings and make
the slide better in the valve body but the rest require service and a
change of oil complete change and cleaning screen and changing filter.
Jay 90 VDP Majestic
JagFab wrote:>In reply to a message from highbank sent Thu 25 Jan 2007:
As a self-confessed non-expert, I served up the tranny as
the culprit but could the cause be elsewhere in the drive-line?
To answer the question, I don’t know when those items were
looked at but certainly not in my ownership (since Sept 04).
Visit the Jag Lovers homepage at http://www.jag-lovers.org for exciting services and resources including Photo Albums, Event Diary / Calendar, On Line Books and more !
–
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.410 / Virus Database: 268.17.8/649 - Release Date: 1/23/2007
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In reply to a message from JagFab sent Thu 25 Jan 2007:
Now why did I click on this… oh yeah
(I know what you mean)
When you find out what the problem is be good if you post
back,it might help others.
Hope it’s not too pricey.
Dave–
Dave Collishaw Peterborough UK '79 S2 Daimler Sov '92 xj40
Peterborough, United Kingdom
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