Baz2004 0 Posted April 13, 2006 My 1.8 16V has started to idle above 1200 when warm recently. It starts from cold fine idling around 1000rpm but when in traffic and warm it idles high. I have recently replaced the ISV for different reasons (cutting out at low speed) and I have also removed the front heat shield as it was rattling and annoying the crap put of me. I also put in a mocal cooler recently. I haven’t tried adjusting the throttle body yet but I figure it may not make a huge difference as it idles well when cold. I wouldn’t say my temps are high either when it happens 98-100 oil and 80-85 water. It seems to revert back to 1000ish when driven on the mororway/open road but I cant say I’ve noticed it in the past idling high in traffic. I also replaced the idle stabilisation switch attached to the head when it this was disconnected it ran over 3000 rpm when idle! Would removing the front heat shield cause this to happen? Quote Share this post Link to post Share on other sites
quicky1980 0 Posted April 13, 2006 im wondering if your tempurature sensor on the side of the head may have given up the ghost at 20degrees = 1000ohms at 60degrees = 250ohms at 100degrees = 75ohms you may need to set up basic idle too. further details are in the haynes manual but if you still have trouble let us know Quote Share this post Link to post Share on other sites
Baz2004 0 Posted April 13, 2006 I thought that before alright does anyone know the part number on that switch for the 1.8 16V? Quote Share this post Link to post Share on other sites
