I have a friend with a problem car it is a 89 Honda Civic DX.
So far it has been converted to multi port injection and has a ZC installed.
It ran fine for about 1- 1/2 years he had some problems with timing marks.....
Lots of techs that have no clue what a ZC engine is and the marks.
HA ha..... you will laugh man..... this poor guy took his car to another friend..... he replaced everything........ distributor, header, throttle body, ecu...... etc etc......
All because he had this hesitation...... I looked at the car for 5 seconds and told him it was missing. Pulled out a plug wire and it had carbon tracking on the end.. Set of wires.... problem all gone.....
This is what I need help with:
Car will set a 02 code after driving for 10-20 minutes. It will come on some times cruise, decel doesn't seem to be consistant
Details
-cam timing is ok
-ignition timing is ok 18degrees
-O2 sensor is new and checked with snapon Vantage
-tps is ok .45 volts still has original rivets....
-fuel pressure is ok, fuel regulator is ok ( has stock regulator and fuel pump)
stock ignition system
-only thing is it has a header with O2 sensor is cylinder 4
-no short to ground on 02 sensor line
-forget the exact resistance from o2 to ecm connector..... .2 of a ohm......
-tried different ECU's still sets code
-what does the ecu look at for setting a o2 code ? is it just no activity after a set period of time ?
