1995 Jaguar XJS COOLANT THERMOSTAT RrEPLACEMENT

Tiny
JGMCCAND
  • MEMBER
  • 1995 JAGUAR XJS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 39,000 MILES
The coolant thermostat is stuck in the open position. Runs too cold in the winter. What is the correct procedure for replacing the thermostat? Access appears to be very difficult. Is removing the left front wheel the correct approach?
Monday, December 29th, 2008 AT 1:37 PM

4 Replies

Tiny
IMPALASS
  • MECHANIC
  • 3,112 POSTS
Hello -

I don't have a diagram of the housing. . .. . .. . .so I attached a pic of the cooling system. . ..item 7 is the thermostat housing you are looking for that hold the thermostat item 6. The top radiator hose should be connected to it.

Service and Repair
Notes

1. Remove lower radiator hose and partially drain coolant.
2. Remove thermostat housing mounting bolts.
3. Remove thermostat and gasket from housing.
4. Clean all sealing surfaces and replace gasket.
5. Install new thermostat with ``RAD'' marking facing out and ``TOP'' marking at the top.
6. Install cover and torque bolts to 17-20 ft. lbs.
7. Add coolant, then run engine until normal operating temperature is reached.
8. Check cooling system for leaks, then add coolant if necessary.


https://www.2carpros.com/forum/automotive_pictures/248015_1_133.jpg

Was this
answer
helpful?
Yes
No
Tuesday, December 30th, 2008 AT 1:21 AM
Tiny
JGMCCAND
  • MEMBER
  • 2 POSTS
The problem is - the area of the thermostat housing is so congested with mechanicals, I don't understand how to get to it. Does one go in from the underside of the car? Does removing the driver's side front wheel help gain access? Thanks.
Was this
answer
helpful?
Yes
No
Tuesday, December 30th, 2008 AT 11:36 AM
Tiny
IMPALASS
  • MECHANIC
  • 3,112 POSTS
Hello -

Well, not having a pic to go by makes that hard to tell you. As a mechanic of many years, more than I would like to admit, I have found that you may have to do all of what you said. Sometimes the manuals are not exactly the best either. As you go you see short cuts. Sometimes because a mod has been done to that model to be in a certain area of the country... Things are not the same as a like vehicle.

Based off of the directions in the manual, it doesn't say to do all of that. However, experience shows that some things may be easier to reach from the bottom, or side, or by removing a tire. If removing a tire gives you access to a panel inside the fender well to have better access, then by all means, do so.

Again, we can only go by the directions provided plus the years of experience on working on the different cars, trucks, heavy equipment etc.

Again, you may have to do a little of all....... Look at every direction first, then make a plan and attack.........
Was this
answer
helpful?
Yes
No
Tuesday, December 30th, 2008 AT 5:41 PM
Tiny
IMPALASS
  • MECHANIC
  • 3,112 POSTS
Hello -

I was reviewing previous posts and wanted to provide you with this info. Looks like you may have some recalls on your vehicle. The dealer may fix these for free. Please contact the dealer service department, give them the VIN number of your car and have them check on these to see if they apply to you.

17-12
08/01/2002
Recall - T493, R493 Replacement PROMs and EGR valve

7-20
02/01/2002
Recall - Suspension of EGR System Recall R493

NHTSA94V249000
12/20/1994
Recall 94V249000: Steering Linkage Assembly Nuts
Was this
answer
helpful?
Yes
No
Tuesday, December 30th, 2008 AT 9:28 PM

Please login or register to post a reply.

Sponsored links