hi. 92 4door. 1.5. nonvetec. replaced fuelfilter. distributor inculd cap rotor. plugs made sure they were gapped. plug wires. valve cover gasket. checked timing and ohms on fuel injectors. the problem is irregular and not consistant. ill be driving and the power cuts down to nothing. like it feels its only on two cylinders, like fuel cut. then it kicks back in. sometimes it only does it second and third, then its fine. most of the time its like that in idle all the way to 80mph. when its muffled, the "sound" is the same no matter what, but the power is decreased... any insite would be greatly appreciated. j-

 

do you think a faulty map sensor would cause this?

 

Maybe a faulty fuel pump -- measure whether the fuel pressure is at spec.

Also possible distributor issue -- Check the resistance of the coil and do a igniter unit input test
http://hondatech.info/downloads/Auto/Manuals/Civic/

Is the CEL ON? http://www.honda-tech.com/zerothread/1901557

 

thank you for the ideas.. and NO, never once got a cel to flash or come on.

 

Does the CEL work?

Also, did you check the timing with a timing gun? Might the timing belt have slipped a tooth?

 

yes. the cel works. i unplugged the ox sensor to pull acode and cleared it just to make sure and the timing is on. i pulled the cover, and im still at my tdc marks i made when i did the belt 2000 miles ago...

 

ive had similar on a different car it was a loose connection to the alternator have you had the battery checked?