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CAR SPLUTTERED TO A HALT 3 WEEKS AGO, EVERYTHING CHECKED OUT BY JAG TECHNICIAN. NO PRESSURE FROM ENGINE PUMP (NEW) SUSPECT ELECTRICAL FAULT BUT JAGUAR FACTORY TECHNICIAN CAN FIND NO PROBLEMS. THIS CAR IS BAFFLING EVERYBODY. ALL WIRING TO PUMP CHECKS OUT OK, WHOLE OF ENGINE WIRING LOOM CHECKED OK, ECU REPLACED, ENGINE WILL FIRE ON EASY START, ANY IDEAS?
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Did you test fuel system before replacing the pump ? Test fuel pump electrical circuit ? Go on youtube an check out videos on basic electrical trouble shooting . Do you know how it works ? Did you test for spark , engine compression ?
Could be anything or everything here ,i have the same vehicle which is my sunday car as i cannot afford the price of fuel for it compared to my diesel escort.Now i suspect the engine breather but i would need my head under the bonnet to find the exact problem as it couyld be the small vacumn pipe to the fuel shut off valve on the fuel rail ,a split or perished breather pipe .Anything in fact along these lines is what i would look at first .Before i would start looking at things like fuel pump pressure and worrying about computer diagnostics.Should start in neutral though as mine does so it may need the inhibitor switch looking at later but not urgent .Mine is nice to drive but as it came from scotland it is well corroded underneath which is what i have been doing this sunday morning and thats spraying the underneath with a evil mix of underseal,diesel and clean engine oil all mixed up ,i kinow it takes a while to dry out but ? the rust absorbs the oil mix from the paint and turns back into metal -and no i dont understand this action but i know it works
The jaguar gears get stuck normally if you're parked on an incline. Its a default Jaguar will not acknowledge. rock the car back and forth a couple times and it will shift. Hope this helps good luck!
Well it is only a ford mondao with a different body shape ,No self respecting jag man would evan consider a diesel ,anyway enough winding up and back to problem ---diesel-- common rail injection ,,,,I honestly feel that it would need plugging in to a DIAGNOSTIC COMPUTER to find the fault because its not like the older model diesels with an injector pump and its all manual .This could be a fault with the cold start or the injector that controls the firing order .Sorry i couldnt be of any more help but these new fancy electronics ??
Had this problem on a v6 3l petrol. No codes present.Connected laptop to diagnostics and drove jag for a few miles.Found fuel pressure to start off at over 55 psi but slowly drop to 20 psi and less until car came to a halt.
Waited a couple of minutes hey presto car starts,pressure back to over 55psi running fine for a while.tested power supply to fuel pump,ok at constant 12 volt. Changed inline fuel regulator and fuel filter,still the same.Checked fuel tank for any possibility of a vacuum occurring,no not that either.Had to bite the bullet and change the in tank fuel pump,problem solved runs fine.This car had also been to jags and because no fault code appeared it must be alright! I have learnt that over my forty year mechanical experience that common sense basics must also be checked out and not totally depend on computer fault codes.Hope this helps.bw Johnnyman.
if the pump is leaking then it needs replacing it sounds like someone in the past has introduced glycol based coolant in to a oat. organic acid tech coolant system THEY DO NOT MIX and go like brown jelly and block things up like heater/ac systems it needs a good flush using a cooling system flushing adative
Could be bad coil packs. Best bet....take it in and have it checked out. Yeah....it's not cheap, but it takes away the guess work.
I had a similar issue last year when I had to jump start my jag. I didn't do it properly and blew out one side of the engines coil packs and everything you can imagine was showing up. Luckily, it was covered under warranty but at least I didn't mess around for days/weeks trying to figure it out on my own.
According to Jaguar, the engine has a heater fitted inside the engine which automaticly switches on when you start the engine and switches of at a pre-determaned time, this expells steam from underneath the car, and considered as normal.
Therf are other answers in the Jaguar forum, take a look there. I have the same effect with my X-Type.
Could be anything or everything here ,i have the same vehicle which is my sunday car as i cannot afford the price of fuel for it compared to my diesel escort.Now i suspect the engine breather but i would need my head under the bonnet to find the exact problem as it couyld be the small vacumn pipe to the fuel shut off valve on the fuel rail ,a split or perished breather pipe .Anything in fact along these lines is what i would look at first .Before i would start looking at things like fuel pump pressure and worrying about computer diagnostics.Should start in neutral though as mine does so it may need the inhibitor switch looking at later but not urgent .Mine is nice to drive but as it came from scotland it is well corroded underneath which is what i have been doing this sunday morning and thats spraying the underneath with a evil mix of underseal,diesel and clean engine oil all mixed up ,i kinow it takes a while to dry out but ? the rust absorbs the oil mix from the paint and turns back into metal -and no i dont understand this action but i know it works
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