Hello I just got my 90 civic hd dx on the road

today I made a chepo intake I used stock pying used a bout 3 inches off a integra after market intake and used a cone filter, now my car some times when I stop its like rev up and down,,, I dont have a tach so I dunno how high its revin, its not revin to high My gues is between 900, and 1300 but I dunno.

and second of all I need a new motor kinda it has 172,000 and burns oil so my friend want to sell me his 97 dx motor will that swap right in?

Thanks for your help in advanced.

 

k first... for the cash u might spend on the DX engine u better go off by getting a Y8 or a Z6 head and mini me ur engine..... or get a whole SOHC VTEC... they go for like 300-500 range.....
anyways for the idle problem...... try reseting the ecu first..... after that see if u stil got problem.... if u do then ur EACV its either unplugged, bad or theres a hardwire problem....
if still there replace EACV (IACV - same ****)

 

the 97 dx's block is the same, so yea, it will bolt right in.... but like he said above, I wouldn't accually pay any money for a dx engine. If it's free, and you're only worried about reliability, not performance, go for it!