i just put in a reman engine in my 86 n/a and for about the first 600 miles it idled perfect until i took a trip about 30 miles away from my house and since then when my motor gets warmed up the idle bounces between 500 and 1000 rpm and goes so low that all my idiot lights come on. i had a broken switching solenoid valve and egr solenoid valve and i thought that was the problem but i fixed those and it still idles like crap. and it only is bad at idle anything above 1000rpm is fine. and when it drops really low my intake makes this sucking noise like it is being starved for air. i cant figure it out. any suggestions?