Vitara JX 1.6 soft-top. Made in Spain 1998. Engine runs at 2000rpm when cold and only returns to idle after 10 mins or 6 miles in warm conditions. Can i adjust anything ? ps. I live in England

Don't drive the vehicle until you get the vehicle checked. Running a engine that is overheating can do serious damage. By serious I also mean Very expensive!
Did you replace the thermostat in the cooling system when you replaced the coolant.
Try this simple test.
**Note** You need to put your hands near the engine when it is running. BE CAREFUL you do not touch Moving or Hot parts of the engine.
With the engine Cold, open the bonnet and find the very large black hose going to the top corner of the radiator. -Carefully touch the hose. It should be cold. Start the engine and let it idle for 5 minutes.
-CAREFULLY touch the large hose. It should be starting to get warm. Let it idle for another 5 minutes.
-Again CAREFULLY touch the large hose. It should be HOT to the touch.
If the hose does not heat up the thermostat could be faulty.
-Carefully touch the hose. It should be cold. Start the engine and let it idle for 5 minutes.
-CAREFULLY touch the large hose. It should be starting to get warm. Let it idle for another 5 minutes.
-Again CAREFULLY touch the large hose. It should be HOT to the touch. If the hose does not heat up the thermostat could be faulty.

1: tune it up this decade?
2: EGR stuck open, the EGR main is well hidding behind
the intake man, at fire wall
it must not stick open
it can screw up 10 ways from sunday
but cleaning it is a 50k mile service point, in the opr guide.

http://www.fixkick.com/EGR-Gen3.html

400 rpm is usually EGR caused
it must NEVER be open at idle.

Hi there,

When cold, modern EFI engines are designed to idle higher, until the engine warms to operating temperature. The idle should then return to around 700rpm.

If your engine still revs at 2000rpm after warming up, then there is a problem with the fuel/air mixture, or a possible air or vacuum leak.

In this case, your vehicle's computer will have stored the appropriate fault code/s. Have your codes read by your local Renault dealer to determine which circuit is the cause.

heater will blow cold till engine warms up ??

they are correct change the fuel filters

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

sounds like the idle air control sensor is bad or it could be the idle speed control sensor(module) both can be found on the throttlebody. but to be sure you can take the car to auto-zone and they will run a free diagnostic even if you dont have a check engine light there still may be a code stored.

SCAN IT CHECK.FOR A FAULTY FUEL PUMP OR RELAY.

Has it always behaved the same? It has sensors that detect engine temp, outside temp, humidity and altitude to give you the perfect fuel air mixture for the conditions. 1300 to 1500 rpm is not unusual for cold engine warm up. You could have a bad sensor, but the codes should have revealed that problem. 10 minute warm up is not outside the norm. at idle, but 7 miles driving should make it happen a little sooner. As for the the stick moving when you "get on it", that is normal engine "torque", your engine mounts give just a bit to allow movement and to keep that "torque" from being transferred to the body/framework of the vehicle. You have hard rubber mounts. As they "fatigue" you will notice this movement increasing slightly.

I have a similar problem which seems to stop ,if after 20 mins of driving or warmed up engine if you stop for 10 mins the revs die to a more normal 1500 revs! it is a spanish car now living in theUK I think the problem is choke related.