I'd like to draw your attention to this thread,

https://www.jaguarforums.com/forum/x...unction-74704/

This is a definite 'must have' for X308 owners.

Background to the development of this unit is the sudden failure of our V8 engines if a coolant part fails, waterpump, hose, tank, clamp, rad....the factory display always goes into the red after the heads have cooked, either dropped valve stems or warped heads, big money to fix.

I've been testing one on my car for just about a month. Installation is easy not as involved as the XK.

The engine temp needle now shows the real engine coolant temp. This is backed up with OBDII readings to 1 degree accuracy, no joking.

It has an audible warning for over temp events also a memory function that displays up to the last 60 engine starts - accessed by holding the trip button for 4 seconds, then the needle does it's thing.

Serious addition guys!

multimedia to follow...

 

looking forward to installing this in my XJR, I'm glad I contacted whiteXKR early so I can get the discount

 

Glad that you guys came through with a solution for this problem. I am definitely interested in this product, especially since I have put a new engine in my car from the destruction that comes from overheating your engine.

Just a recommendation to all XJ and XK owners of the V8 years, I would definitely recommend changing your coolant expansion tank cap. Changing this cap is an inexpensive precaution to having issues with overheating, and the new temperature gauge will not do any good if your car is not maintaining the proper pressure in the cooling system. The cap maintains pressure in the cooling system which in turn raises the boiling point of the coolant. Without this pressure the boiling point of the coolant can actually drop below when the fans will turn on to cool the engine and also your guage will be reading fine yet you may be boiling your coolant and not even know it. I do not think that these cars have a high failure rate of the coolant cap, however it is an inexpensive part that will be a part of saving your engine.

Hope this keeps some folks from having major repair costs just like the guage fix.

Thanks all,

 

Sean-
Thank you for your excellent help proving this out on the XJ X308! I have been contacted by quite a number of appreciative XJ owners already.

 

That's actually a hell of a product you came up with there. Just the other day, I was wondering why the oil pressure gauge seems to always stand still. Nothing like the aftermarkets I've installed or even OEM Jeep gauges. Same goes for water temp. Very interesting read!

If you don't mind me asking, where are you having these manufactured?

 

Thank you!

You have an oil pressure gauge? I was not aware any X308 XJs had factory oil pressure gauges. Please give me more information. JTIS does not show an oil pressure guage for the XJ.

I outsource the circuit board fabrication, but for modest quantities they are designed for manual assembly 'in-house' (i.e.; Mrs WhiteXKR ).

 

Installation and instruction manuals are now posted for many models here:

RealGauge Installation - TheJagWrangler


The RHD (United Kingdom) model XK8/XKR and early model X308 XJ model manuals are not posted yet, but will be up shortly. The differences are very minor.

 

UPDATE: All model year XJ - X308 instruction manuals are now posted on my site.

 

Whoops, sorry about that! I meant water temp gauge. I just finished reading the installation instructions. Very thorough.

Is the PCB manufactured locally, or outsourced abroad?

 

Is this temp gauge up-grade needed on the X350?

 

The PCBs are fabricated in the US.

 

If on the X350 your temp. gauge never moves from center scale once the car warms up, it likely is fake. I do not have an X350 upgrade at this time.

 

finished up my install today, works perfectly, I definitely suggest that everyone gets this. My car has overheated twice with no warning in the past due to the stock setup. I don't think it will ever overheat again because I will know I have a problem before it is too late.

 

Great i,m gonna order mine soon ,i see Paypal payment can be made .

 

Amen, brother...

I'm just waiting for that phone call or email to tell me my number has come up and I can pay and have mine shipped.

Great product here. We should all support this type of development.

 

Thank you! I am glad you are pleased.

Many hundreds of hours of R&D and testing went into this (controlling gauges in a modern computer controlled automobile is not the simple task it once was). It is great to finally see that it was time well spent!

 

I am finally getting caught up. I have just opened RealGauge ordering to the public.

Now Shipping! RealGauge - TheJagWrangler