WHEN EVER I TURN MY CAR ON IN THE MORNING OR WHEN EVER THE MOTOR IS COLD THE RPM's WILL CLIMB UP TO ABOUT 2600 AND SIT THERE FOR ABOUT A 30-60 SECONDS THEN WILL DROP DOWN TO IDLE 600-800 RPM THEN BACK UP TO 2600. IT DOES THIS UP AND DOWN STUFF UNTIL IT IS COMPLETELY WARMED UP. SOME ONE TOLD ME IT WAS THE MAP SENSOR BUT IM NOT EXACTLY SURE WHERE ITS AT IF THAT IS THE PROBLEM.

THE CAR IS A 1989 CRX SI WITH A B16A1 SWAP. YOUR HELP WILL BE GREATLY APPRECIATED.

THANK YOU...

 

check your idle air control senor, take it off and clean the screen then put it back on or unplug itand see if the surging stops

 

Could be the Throttle Position Sensor. Best bet is to get a manual for 92-95 Del Sol and start checking.

 

well considering that i dont know where the idle air control sensor is i will probably get that manual so i can check it out. thanks for the help.

 

it's on the back of your intake manifold, held on my 2 12mm bolts, pull off the two coolant lines, plug them, clean the IACV with some brakleen, let it dry, hook everything back up and fire her up.

 

i just cleaned the whole throttle body.. and its fine now.. mine used to idle cold at 1500-1400 untill warm.

 

thanks all of you for your input, i will get to it first thing monday morning considering that im going sunday morning to the battle of the boards. hope to see you all there im going to be in a red crx si with si's in the back and my hood tied down by a rope. i kinda got into in accident a couple a weeks ago.

thanks, kevin

 

that's it.