91 hatch si Posted September 25, 2009 Share Posted September 25, 2009 my engine makes funny nosie and sound like dieing but comes back but never shuts down and i can drive it where ever and the rpms go bounce from 1000 to 2200 i have dohc zc cable clutch 1991 civic Link to comment Share on other sites More sharing options...
SpeedDemon Posted September 25, 2009 Share Posted September 25, 2009 Idle Air Control Sensor. clean it. run a tank of fuel injector cleaner through a tank of gas. check to make sure injectors are getting enough fuel. change the fuel filter. do those one by one and see if it helps. does this do it all the time or every once in a while? Link to comment Share on other sites More sharing options...
xxhrdcr4lifexx Posted September 25, 2009 Share Posted September 25, 2009 you have a vacuum leak some where, the easiest and fastest way is just replace all your vacuum hose kuz it could be any 1 of them. +1 for cleaning the iacv, doesnt allways work but it might help a bit. usually its most likely just a vacuum leak could range from a cracked hose to just the littlest pin hole leak. Link to comment Share on other sites More sharing options...
cranny Posted September 30, 2009 Share Posted September 30, 2009 IACV is idle air control valve , and it is not a sensor. it could be a vacuum leak. under what conditions did this problem start? Link to comment Share on other sites More sharing options...
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