SIKE30 0 Report post Posted October 11, 2006 Hi I have a 1986 318i with a m10 engine. For some reason the engine does not idle steady. It revs back n forward from 800 to 1000 rpm. I have changed HT leads, Dist.rotor, Dist.cap, Spark plugs, The head gasket has been changed not so long ago and the head was reconditioned. I am pretty sure there are no vaccum leaks. It does this at normal operating temperature and sometimes when engine is cold. (could a coil cause this?) Please help me. Thank you Share this post Link to post Share on other sites
TronSpec 0 Report post Posted October 11, 2006 Hi I have a 1986 318i with a m10 engine. For some reason the engine does not idle steady. It revs back n forward from 800 to 1000 rpm. I have changed HT leads, Dist.rotor, Dist.cap, Spark plugs, The head gasket has been changed not so long ago and the head was reconditioned. I am pretty sure there are no vaccum leaks. It does this at normal operating temperature and sometimes when engine is cold. (could a coil cause this?) Please help me. Thank you Idle control valve?? Share this post Link to post Share on other sites
Carl 3 Report post Posted October 11, 2006 (edited) ICV or TPS, do a search on the previous threads to found how to resolve it Go up the top and click on search Edited October 11, 2006 by Carl Share this post Link to post Share on other sites
