My 92 Jag XJ6 vandenplas stalls after breaking at traffic lights and intersections. No problem in starting it again. Jaguar dealer diagnosed it as an electrical short and had it fixed. After a few weeks it stalled again. A friend sad it could be the idle valve. I am not sure now who is right. Could you kindly help me on this? Thank you.
If the lights dim upon braking and appears to just die? It could be a bad alternator, especially if the car needs to be jumped sometimes. This is due to a short in the alternator or busted diode. changing the alternator is kinda tricky to get to but very possible to do yourself for less than 100.
First and foremost I would demand the dealer to access the situation since I assume you paid them to fix the problem. This sounds like an electronic issue between the transmission and the idle switch. When you brake with an auto transmission it downshifts thus adjusting the rpms to compensate. If this is malfunctioning it could very well stall it..
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Fault code P1178Rich Fuelling Trim, Long Term (AMFR)Check for manifold air leaks, rectify as necessary Check for recorded MAFS fault code, rectify as necessary Clear fault code and perform service drive cycle to verify fault cleared Contact Jaguar Service Hotline if fault still present.
1994 jaguar xj6, I know of three location that the fuse box exist. 1. just in side the drivers door on the floor inside the front fender where your left foot could rest, 2. the oppsite side passenger side right foot next to the door jam below the door hinge front fender behind the wheel. the 3. is in the center consule where the tapes are stored, is there any other places a fuse box exist on the 1994 jaguar vandenplas xj6 thank
It could be an ignition related issue or fuel.
When it doesn't start does it crank, do you have the ignition lights?
The most common problem of intermittant no star probems is the crank sensor on the front of the engine, they can break down over a period of time and fail when warm. if not then I would fit a fuel pressure guage to the car and run it. Then see what the reading is when warm. If it is nothing (should be 38-40) then I would replace the fuel pump relay.
The fuel pumps typically don't fail intermittantly, they just fail!
sounds like valves not seating,this model car suffers from burnt valves as the engine was designed pre war when they had high octane fuel and lots of lead in the fuel ,lead lubricates the exhaust valves as well as causing all other health problems.but iam sure that these engines never got a stelite coated valves and valve seats when in 92 we all went unleaded.i have reground no end of heads since word got around that i could do a jag.i can get the head off in about an hour ,they are quite simple really just dammed heavy and the head gaskets expensive about 100€ another 3/4 hours to grind valves in then refit.valve timing marks on rear of cams by the way .