[renesisdrms]

-94 base with 155k catless.

...just cleaned the intake manifold and t/b with carb cleaner...can't remove fast idle or iac valve so i just soaked it with carb cleaner. idle mixture screw also removed and cleaned. egr exit port inside intake manifold also carb cleaned and unclogged.

the driveability... in 1st gear on light throttle, it occasionally chokes/ hesitates and jerks...like if the fast idle/iac valve is stickin. its accompanied with poor acceleration like if egr port is stuck open or sticking. all is affecting driveability under 2k rpm.
coming to a stop, it raises idle to 1500rpm's every time with idle settling down slowly.

any ideas why? seems like when i clean one thing...it clogs another. anyone knows or has experienced this problem before i go out and pull off the egr valve for inspection?

 

[renesisdrms]

hmmm...scratch that

egr valve removed and cleaned. diaphgram moves freely.

secondary throttle linkage adjusted and bottomed out...

what can be wrong? it turns out that i didn't unplug the iac valve and let it rest on base idle. and further more than that, i had screwed out the idle mixture screw 1.5 turns too much. it rests at a good 800 rpm with 1 3/4 turn on the idle mixture screw- plugged in the fast idle IAC and it compensates correctly.

thx 4 all ur help, but i guess i dun need ya club retards.net---i can solve my own pos miata probs...til disaster strikes, i shall fix by trial and error. but lets hope miata aren't always problem riddened

 

[jdmwackness]

i think i remember reading on like m.net that ur not supposed to use carb cleaner on our motors.

i think, so dont quote me on that haha

 

[renesisdrms]

there may be a point there. some can be used with petro distillates, xylene based, benzene based, etc etc. ie, pro honda products induction cleaners contains no xylene or benzene... due to incompatability if certain seals can get burned by those chemicals...thats just a guess example cause i'm not in front of a induction cleaner can at the moment. but consider this, i've always had access to honda products when i owned a honda. now its a mazda, and just going the extra step is too much hassle.

either way...cleaner residue is better than carbon deposit, period. but you do got a good point. sometimes a chemical is not recommended due to the fragile nature of other sensors in the system. (never use oily cleaners on maf sensors)

these are just very technical stuff, but if you just needed to clean a hopelessly dirty part, u gotta use what u got.