93eghatchftw

Long time H-T.com reader ,first time posting. I recently did a D16Z6 mini-me head on my D15B7 block and it didn't work out so good,bad throttle response and it had low idle,i don't know why, and so i decided to put my perfectly fine working D15 head back on. Now when i first started the car it started ,BUT, the RPM went straight to around 3800 to 4000! I've searched and troubleshooted with idle screws to cleaning my IACV, checking my vac lines, and nothing. so what could my problem be? I haven't driven my DD car in 2 weeks now and i just don't know what to do.

azzazel_9

Vacuum leak somewhere.

TIMMY4TOES

Or you could have put one of the lines backwards. Does it keep on doing it once it is warm? I would get nice schematic and reconnect everything again

crazyhouse2011

Screw that D series motor. If you have the stacks just drop in a b16

TIMMY4TOES

Have u also tried you idle control adjustment?

TIMMY4TOES

I would say h22 lol

93eghatchftw

i don't know, i don't keep it on that long it scares me lol. I do something that I've searched and troubleshoot and if it doesn't change idle I turn the car off.

93eghatchftw

no i dont have 'the stacks' lol but im trying to keep it just cause its a real good gas saver (1.5)

93eghatchftw

oh and exactly, how do i adjust the idle control?

EJ1Lovett

adjust the throttle cable?
vacuum leak?
try adjusting your distributor if you dont have adjustable cam gears

xile6

That's a high idle I'm going to say intake gasket leak or leaking injector oring.

93eghatchftw

problem solved. wow. was missing a throttle body gasket. cant believe it made that much of a difference though, i mean...cold start jumping straight to 4000 rpm ? thanks for all the replies.