i have a 88 ef civic with a OBD0 b16a swap. on a cold start the engine starts up fine and idles fine but runs really rich (according to my narrow band a/f gauge ) While driving there really is no problem other the slight back fire during shifts, and the fact that it doesnt go into vtec, but thats due to the knock sensor code. The ecu is showing codes for map sensor and knock sensor (3 and 23). If i turn the engine off after it has warmed up and then turn it back on its runs like ****. It begans to idle erodicately(sp) as if the dizzy gone bad. At full throttle the rpm doesn't rise above 1k. If put it into gear the engine immediately stalls. If i shut the engine off for like 10 min and start it up again it runs fine (well for the most part) i checked for voltage in the map plug and it was 5.02 v wich i guess is good since its a 5v ref. sig. but it had over 200 ohms of resistance, ive tried several diff map sensors but the code doesn't go away. Ive searched for this many times bvut have not found the answer. wtf is going on? any help is greatly appreciated

 

...anybody plz

 

dunno what the resistance should be, search for that...but have you double checked that the vacuum hoses are not broken or going to the wrong places

 

yea every thing is is the way it should be as far as vacuum hoses go. i need to gain access to a vac. guage to see how much vacuum im getting.