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camcbride8




Joined: Jul 28, 2008
Posts: 5



(Msg. 1) Posted: Mon Aug 18, 2008 1:25 am
Post subject: 1989 jaguar XJS GM trans
Hello I have a 1989 Jaguar XJS V12 I believe the trans is a GM hydramatic 400.I am having trouble with it shifting,It doesn't shift from first to second unless I go 55mPH and the RPM's get up to 5,000 and when it shifts it shifts hard,I noticed trans fluid in the Vacume line to Modulator on trans I changed the mod and it is still shifting hard at high rpms the fluid looks good nice and red no burnt smell and level is good does anyone know whats the problem
thanks

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MoiInAust

External


Since: Sep 02, 2008
Posts: 1



(Msg. 2) Posted: Tue Sep 02, 2008 4:57 pm
Post subject: Re: 1989 jaguar XJS GM trans [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
There should not be any fluid in the vacuum line. I think the modulator
valve has failed. Sekk other opinions though. This is from memory with a
much less specialised car...

"camcbride8" wrote in message

> Hello I have a 1989 Jaguar XJS V12 I believe the trans is a GM
> hydramatic 400.I am having trouble with it shifting,It doesn't shift
> from first to second unless I go 55mPH and the RPM's get up to 5,000
> and when it shifts it shifts hard,I noticed trans fluid in the Vacume
> line to Modulator on trans I changed the mod and it is still shifting
> hard at high rpms the fluid looks good nice and red no burnt smell and
> level is good does anyone know whats the problem
> thanks
>
> --
> Posted at author's request, using moderated http://www.AutoBoardz.com
> interface
> Thread archive:
> http://www.AutoBoardz.com/1989-jaguar-XJS-GM-trans-ftopict248653.html

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