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Engine Lopes / surging idle


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I've got a 1987 Honda CRX si with about 205k km on it...


During the warm up phase, the idle bounces / lopes between 700-1500 RPM...


From the pre-searching i've read, it looks like this is usually an IACV issue... so my first question is where exactly is it / what does it look like... I have the haynes manual, but it is very unclear...


Second thing... Some time ago, before the car went off the road for nearly a year, i had a mechanic look at the idle issue while doing something else... he dealt with it by "clearing out a couple vacuum hoses..." the problem is i never found out which hose(s) was causing it... does anyone know which hose i need to be looking at?


Thanks in advance,



Edited by tk666
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