No, it was a vtec but the person before me put in a non vtec headsThe stock Civic EX has a VTEC engine. What non-VTEC engine was swapped into the car?
Seems to be the norm on the posts now...So you bought a botched project car?
Yes did all of those.Okay.
Have you checked whether the throttle cable is not too tight and has some slack?
Did you remove the IACV and do a thorough cleaning with brake cleaner?
Did you bleed the cooling system?
Ok I will do those tomorrow as my place is dark.Codes 21 and/or 22 should also be thrown.
Codes 73 and 74 indicate misfires in cyls 3 and 4. Do a full ignition system tune up - plugs, wires, cap, and rotor.
Codes 41 and 65 - Are both O2 sensors connected?
For the idle problem, do the test below.
After engine is fully warmed up and is having the high, surging idle problem:
Remove air intake system.
Does covering the hole inside the TB leading to the IACV with your finger cause the idle speed to drop and stop surging?
The second o2 sensor has wires that drop through the floor under the seat to the cat below. Connect it.O2 sensors, only 1 is available
Are you saying that primary o2 sensor is coupled to its connector? If so, check whether fuse 15 is blown.
There's only one O2 sensor. The one in the picture is the only O2 sensor that's behind the heat shield.. not 2 only 1 O2 sensor running the car.Oh, I didn't expect you to have the fused exhaust manifold-cat system. Your picture shows the secondary O2 sensor. The primary O2 is higher up and plugs into the exhaust manifold. Remove the aluminum heat shield to see the primary O2 sensor.
Remove the heat shield and post pics. Without question, the stock 98 Civic EX was wired for two O2 sensors.
Based on its location, the O2 sensor in your picture fits with the secondary O2 sensor (after the cat). Post clear pics of the 4 wires in the connector (wire harness side).
Remove the heat shield and post pics. Without question, the stock 98 Civic EX was wired for two O2 sensors.
Based on its location, the O2 sensor in your picture fits with the secondary O2 sensor (after the cat). Post clear pics of the 4 wires in the connector (wire harness side).[/
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What codes?98 Civic ex with d16y7 throwing codes.
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Idle is bouncy still.What codes?98 Civic ex with d16y7 throwing codes.
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