Just did a swap on my 93 H22a1 lude, swaped it to an H22a on account of the compresion droping on th a1....heres the problem, started it up and it idled 4000rpm's and then it fluctuated between 1500 and 4000 like i had huge race cams, please help asap

 

i think its vacumn but not quite sure

 

you are on the right track!

 

my buddy thinks its the tps but i don;t agree, feedback please

 

its a vacuum leak

this problem pops up every time someone swaps in a jdm motor

did you install a CAI or SRI?

just search

 

anyone have the vacumn diagrams

 

It's in the FAQ's

 

i think we should change FAQ from
Frequently Asked Questions

to

******* Abused Questions

 

Hey whats up guys and girls I had the same problem on my H22A swap I got the 4th gen lude and the way I solve it was not by any vac leaks but by bleeding the coolant and adding the IACV on I dont have the egr or the fast idle vavle or the fast thermo valve because I have the skunk 2 manifold on hope this helps