[modern] 88 XJ40 blower motors

I am contempating pulling the LHS blower motor as the WD40 into the
microswitch does not seem to be fixing the problem of the fan not
working at the Low and Medium levels
Ive read Haynes but it seems somewhat superficial. Ive looked through
the archives and couldnt find anything
Can I get any tips from someone who has done the job, please? Things to
watch out for, etc.
Thanks a lot

Tim Bentley
Norwalk California
88 XJ40

Hi Tim,

I have just removed repair and re-fitted my LHS (UK passenger side) blower
unit to-day. As suggested by other jag-lovers a few weeks ago, the problem
was the transistor 2N6284 which is located inside the blower unit. Next
weekend’s project is to do the RHS (Drivers side), no real problems, just
follow Haynes manual (watch your hands on the sharp edges).
I had the same problem, blowers only work on high speed. this is because on
high speed the motor is fed via a relay at full voltage. On low & medium
speed the computer controls the speed via the transistor.

John
'89 XJ40 Sov. (Sheffield UK) 116400miles-----Original Message-----
From: Timothy Bentley [mailto:Cestrian@peoplepc.com]
Sent: 30 March 2001 22:07
To: Modern@jag-lovers.org
Subject: [modern] 88 XJ40 blower motors

I am contempating pulling the LHS blower motor as the WD40 into the
microswitch does not seem to be fixing the problem of the fan not
working at the Low and Medium levels
Ive read Haynes but it seems somewhat superficial. Ive looked through
the archives and couldnt find anything
Can I get any tips from someone who has done the job, please? Things to
watch out for, etc.
Thanks a lot

Tim Bentley
Norwalk California
88 XJ40

Tim,

I think there were 2 multi connector’s (one large & one small) plus one
vacuum pipe. The duct tape wasn’t really stuck, more like just hanging
their. You will need a 10mm socket and a long extension bar, I have two in
my socket set (one long & one short). I needed both, about 16", as the
mounting bolts are the top (affectively into the underside of the dash).
The circuit board which has the transistor on it, is located just inside the
air duct, the solder side is covered by a plastic cover which is riveted on,
these rivets also mount the circuit board to the ducting. Don’t forget to
lubricate the fan/motor bearing while you have it apart, as the reason the
transistor go, is that as the bearing tighten, the motor draws more current
and blows the transistor.

John
'89 XJ40 Sov. (Sheffield UK) 116400miles-----Original Message-----
From: TIMOTHY BENTLEY [mailto:cestrian@peoplepc.com]
Sent: 01 April 2001 05:22
To: @John_Parkin
Subject: RE: [modern] 88 XJ40 blower motors

On Sat, 31 March 2001, John Parkin wrote:
Thanks for the quick response
I`m REALLY new at this. Do you remember how many wire connections…was
taking the duct tape off really difficult? Do you recall what size the nuts
were so I can buy the right sized spanner/wrench?
I used to work on Datsun 240Zs a long time ago but all my tools have
disappeared over the years
Thanks mate
Tim
ex patriate Brit in S. Cal

Hi Tim,

I have just removed repair and re-fitted my LHS (UK passenger side) blower
unit to-day. As suggested by other jag-lovers a few weeks ago, the problem
was the transistor 2N6284 which is located inside the blower unit. Next
weekend’s project is to do the RHS (Drivers side), no real problems, just
follow Haynes manual (watch your hands on the sharp edges).
I had the same problem, blowers only work on high speed. this is because
on
high speed the motor is fed via a relay at full voltage. On low & medium
speed the computer controls the speed via the transistor.

John
'89 XJ40 Sov. (Sheffield UK) 116400miles

-----Original Message-----
From: Timothy Bentley [mailto:Cestrian@peoplepc.com]
Sent: 30 March 2001 22:07
To: Modern@jag-lovers.org
Subject: [modern] 88 XJ40 blower motors

I am contempating pulling the LHS blower motor as the WD40 into the
microswitch does not seem to be fixing the problem of the fan not
working at the Low and Medium levels
Ive read Haynes but it seems somewhat superficial. Ive looked through
the archives and couldnt find anything
Can I get any tips from someone who has done the job, please? Things to
watch out for, etc.
Thanks a lot

Tim Bentley
Norwalk California
88 XJ40


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