Question about Jaguar S-Type
There are several things which can be wrong. Your car has a "cold start routine" which is similar to the old style choke. It uses a temperature sensor to trigger the effect. Most likely the sensor is failing to cue the routine.
On some cars there are 2 sensors with 1 operating the temperature gauge and the second operating the engine controls. You want to change the sensor for the engine control.
Another few possibilities are the ISC (idle speed control) which is a solenoid resting horizontally in the intake manifold. They can soot up and cause idle problems until they free up. And the EGR could be dirty and need flowing exhaust to free itself.
Last, but not least are your O2 sensors. They have heaters built in them to rapidly restore your idle to a lean condition. They should set a problem Code but a lot depends on the total of other factors that determine driveability. Their performance could be off but still within working range.
Finally, some engines have a part called a manifold runner. They can stick. IF your engine has this part this is another possibility.
Last, a small Vacuum leak. When cold metal heats up small Intake gasket leaks can reseal. Spraying a water mist from a spray bottle will make an engines' RPM change or stall. Just wet the seams of the intake manifold while it runs.
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Posted on Jan 04, 2013
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Posted on Jan 02, 2017
Locate you computer (right front kick panel) and tap on it with a pen while the car idles... Also flex it back and forth with your hands to see if the car runs rough or quits... You may need a new one.
Posted on May 15, 2008
hi change the glow plugs and no its not normall there should be no air in the system it is either sucking air or it has not been bled properly last time system was worked on usually when changing the fiter check the whole system for signs of leaks if non found bled the system until you get rid of them yates210456
Posted on Oct 17, 2008
SOURCE: 2002 Jaguar S-Type 4.0
this is a old model and it should have a cold start valve or it should have a coolant temp sensor, replace the colant temp sensor which is usualy located on the thermostat housing or on the intake manifold and this will sove the clod start problema!!
Posted on Nov 17, 2008
http://www.fixya.com/cars/t1386554-91_ford If this doesn't help you tell me more, if it does, please vote me fixya, otherwise please do not give me any rating at all, the only compensation I get is my Fixya score, Merry Christmas.
Posted on Dec 22, 2008
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