j-16 1 Posted April 1, 2007 Hi, I'm having some problems with starting my Mi16. The engine starts flawlessley every time but I need to use the throttle to stop the car stalling, after about 5 min the idle is o.k (if a bit too low) and I can take my foot of the accelerator. The engine seems to have given up running it's cold start program ie reving to about 1500 and slowly dropping back to normal once warm Any ideas? Share this post Link to post Share on other sites
Mikey G 3 Posted April 1, 2007 Sounds like the idle speed control valve, its the cylindrical device with 2 pipes on it just on top of the inlet manifold. Take it off and give it a clean, see if its dirty. If not find a known good one and try it. Share this post Link to post Share on other sites
j-16 1 Posted April 1, 2007 Hmm that's what i originally thought. I've already cleaned it and it seems to be moving o.k. When car is idling, when warm, unplugging the icv cause the car to stall immediately. Share this post Link to post Share on other sites
Mikey G 3 Posted April 1, 2007 Could be a faulty ECU temp sender, its the blue plug on the right hand side of the thermostat housing block. I think i saw measured values on here somewhere for you to test it. It may think the engine is already warm when first started. Share this post Link to post Share on other sites
j-16 1 Posted April 7, 2007 Checked the temp sensor and this seems to be working fine - car stalls when this is unplugged. Just checked the ICV also with a direct feed from the battery and it opens and closes with no probs so this is also ok. Is there a relay for the ICV that might have died? Share this post Link to post Share on other sites
taylorspug 7 Posted April 8, 2007 If the ECU temp sensor failed it would most probably run rich all the time, as the ECU will revert to a default setting which is something like -20 degrees for the water temperature. Check the TPS resistances while you are there, could be fine but ive had 2 come up faulty in the last week now! Circuit should be open (zero resistance) between pins 2 and 18 with the throttle closed (idle), and then go to max resistance as soon as the throttle is even slightly open. And the same applies for the full throttle position, between pins 3 and 18 the circuit should be open at full throttle, and at maximum resistance at any other throttle position. Obviously the full throttle test is not going to affect your current problem, but you may aswell test it whilst you are there. Share this post Link to post Share on other sites
