Re: Cannot start my old Jag
Usually when these cars act squirrelly on start-up likes yours, they are
in need of a CPS (Crankshaft Position Sensor). What this sensor does is
read the timing of the crank shaft in order to fire the spark plugs in the
proper order as well as the proper timing. When the one on my '88 XJ40 went
out, the car stalled at an intersection, started, ran and stalled again.
The last time it did it before I replaced the sensor, the car ran
beautifully, died, sat for a half hour, started and ran again with out an
apparent problem. Once I replaced it, I have gone 20,000 miles with no
stalling or ignition problems.
If you have checked that you are getting fuel to the rail and spark to
the plugs, chances are this is your problem. It is about a $60USD solution
and you should carry a spare in the trunk. Also make sure that the one you
get is for the 4.0 litre engine and not the 3.6 if your car is 12 years old.
They do not swap.
By the way, my 1960s Jag is an old Jag -- your 12 year old Jag isn't
even broken in yet. I have 210,000+ miles on my '88 XJ40 and I plan to take
it 300,000 to 350,000 miles before I do a re-build on it
"Vassie Naicker" <firstname.lastname@example.org> wrote in message
> Worth a try:
> Replace your plugs and just maybe you need 'fresh' fuel.
> "Jerry" <email@example.com> wrote in message
> > 12 year old Jaguar Daimler XJ6 has only started once in 6 months. The
> > first time I turn engine on engine fires but after that engine simply
> > turns. Changed the fuel filter and checked spark is coming from spark
> > plugs. When key is turned on hear fuel pump. Fuel tank is half. Car is
> > rarely used and battery used to go flat so bought new battery about 2
> > years ago. When using battery charger the charger indicator shows it is
> > 30% charged after 24hrs - but engine turns fine. One fuse (central
> > locking) is blown.
> > One day about a month ago it started on first start and I drove around
> > about 10 mins with no problem. This was just after I changed the fuel
> > filter and left it for a week.
> > It fires on first start only and except for that one day it will not
> > start.