bogus_ek

alright, i've searched, no answers... 93 coupe w/ b16 starts up... idles fine. at normal operating temp, still idling fine... push it hard, like running on the highway, or a complete pull through the rpm range, and she idles up and down 800-1300. if you let her sit, she does it for awhile... then starts to idle fine when she cools down. not too bad of a problem when it's cold out, but on hot days, it's horrible. also seems to be extremely hot on warmer days. it was 70 deg out today... and she acted up real bad. engine temp gauge always stays right below mid level too. i've done all the checks... hoses, leaks, gaskets, flushed and bled coolant system twice. no check engine lights... stumped guys help me out.

bogus_ek

lol... doesn't seem like anyone has any ideas either well... i'm gonna sleep on it. bump for the night guys

DOHCtorTHRUST

i have that same problem...its your IAVC sensor... i swapped mines out to get my car BAR'd with my buddy and it was fine... now that i switched back... its doing the same...

you can just take some WD-40 and spray it in there to clean it out(or what ever you have laying around)

bogus_ek

hmmm... correct me if i'm wrong, but i believe this is the piece that is located on the back of the intake manifold, right?

1slowhatchie

theres a valve under the throttle body that u have 2 tighten up.mine reved up and down like that until i tighten it up

Falqon

yeah, back of the manifold, but you'll have a lot more luck replacing it by calling it IACV.

The valve under the throttle body, idle air thermo valve or something like that should -I'm pretty sure- only come into play when the car is cold.

bogus_ek

no guys... didn't help, cleaned out the fast idle valve under the tb... and switched out the iavc. same thing still.... anybody w/ any other suggestions?

bogus_ek

anybody.... help please...

opkjoblacsh

mass air flow sensor could be bad check your codes!!