Petrol smell from exhaust and using too much fuel!
#22
Temperature. If the car does not come up to normal operating temperature ( gauge needle at 12 o clock) then it is likely stuck open. The other way is to feel the top radiator hose as the car is warming up. It should stay cold until the thermostat opens and then will become too hot to hold. It might get slightly warm, as there is a bleed and some minor circulator through the radiator, but it shouldn't be as warm as the housing on the engine.
If you have a laser thermometer, just measure the temperatures on either side of the thermostat as the car is warming up. There should be a difference. If there isn't, the the thermostat is open.
If you have a laser thermometer, just measure the temperatures on either side of the thermostat as the car is warming up. There should be a difference. If there isn't, the the thermostat is open.
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#28
Idle
i noticed that mine x300 xj6 on idle it drinks like 1 litre pretty quick... and i have smell from exhaust with a lot of smoke when cold weather even if the car is on for 30minutes or more... when i start rolling all the smike disappears... thermostat? Should i check catalytic concerters? I recently replaced half way from the rear the exhaust since it was broken completely... 264.000 km
#29
Maf?
The car does not seem to smell of petrol anymore. I just need to take it for a drive to see if its better on fuel. I also noticed one difference but not sure if its relevant. But the average mpg on the trip computer is taking longer to work it out. Before it was instant.
So finally was maf? U didnt change thermostat?I have same problem...
#30
I did change the Thermostat. The temperature runs in the middle now. I am still getting on average 12.1 mpg. I have filled it up with fuel to check it is accurate and only just get over 200 miles to a full tank of gas. On my handheld OBD II it says the following error code in the attached picture. It is only a cheap tool to be honest though. It seems strange have had two Jaguar XJ6 4.0 cars same age and same problem both cars. The first car I never sorted the problem out and sold it in the end. Any recommendations on a fair price good tool with data stream on it as well would be appreciated ?.
#31
ELM327 , about $ 12 US on Ebay before Trump tariff . There is a learning curve but will look at all ECU data and record a log as you drive around . Look for the unit that includes software and you may opt for better software later . Have you looked at the 2 wire engine coolant temp sensor and inlet air temp sensor that effects fuel trim ? See page 78 and 86 as you dip it in ice water to verify in the file below:
http://www.jagrepair.com/images/Trai...20-%202000.pdf
http://www.jagrepair.com/images/Trai...20-%202000.pdf
Last edited by Lady Penelope; 03-06-2018 at 06:35 PM.
#32
I have changed both the engine coolant temp sensor and inlet air temp sensor for used sensors. I do not have a pc laptop so I am looking for a OBD II handheld device that has a Android App so can use wireless ?. Any ideas on where I can get a good android app that will support data streaming as my current tool does not ?.
Last edited by mat32essex; 03-07-2018 at 02:26 AM.
#33
Again! Engine Light back on week after 02 replacement
here we go again - code P1179 came up again and looks like i need t replace another 02 sensor How do i know which one this time>? replaced right downstream over a week ago - was fine - today - light back on - code back. help 1996 XJR SC 6cyl..
#36