ok heres the deal when i start it up i give it full throttle all the way to the ground and it jumps up and down from 1000 to 2000 rpm so i dont know whats wrong with it. it ran perfect a couple of days ago and it did sit since then but i dont know. please help me thanks.

 

uh what sort of car are we talking here? Engine codes, ECU codes, year, modifications, etc.. But let me get this straight- you turn it on and floor the throttle? Why would you floor the gas once you turn the engine on? Where does it idle? Im just a lil confused, but maybe I'm just stupid

 

its throwin a code 14. its a 91 crx hf with a d15b7 and no i didnt turn it on and just floor it lol. i fixed the idle problem the other night and it ran fine. then the next morning i went out to start it for work and it started fine and i let it warm up and when i went to leave for work i noticed it was running kinda weird when i put it in gear so put it back in neutral and just gave it full throttle and thats when it did that **** i was talkin about. its a completely bone stock motor has 80k miles on it and it was just swapped in. please help.

 

bump please somebody help me i need to get my car on the road.

 

whats a code 14, IACV? reset your ECU, unplug the battery for about 5 mins. and see what that does. if you still have code 14, you could try taking off the IACV, it's on the back of the intake manifold, and cleaning it up with some carb cleaner. I 've had to do it before, but not for the same problem. mine just idled odd.

 

yea see mine idled real low like at 800 to 900 rpms so i adjusted the throttle cable and cleaned the iacv up with carb cleaner and it still runs like ****.
bump please somebody help.

 

ttt.

 

It def. sounds like a sensor problem to me... and imo 800-900 RPMs is a good idle. what does it sound like when you try reving the motor? Does it sound like there is a rev limiter at 2000rpms? Does it sound like the motor is just missing? Is it driveable?

 

yea man thats what it kinda seems like that there is a rev limiter but all my sensore are hooked up correctly and all my vaccum lines are hooked up also. im completely stumped on what is wrong with it. any help is greatly appreciated. thanks.

also it doesnt sound like its missing and its not driveable.