95 Honda Civic EX

No heat and car has an idle. Replaced the thermostat already and still no heat w/ idle. Any suggestions?

 

Try bleeding the coolant system

 

I did that when I replaced the thermostat. Completely drained the coolant and added new coolant.

 

So you bled the cooling system? Draining it and filling it up does not mean you bled the cooling system.

 

My bad, I bled the cooling system as well. I think it might be the sensor but not sure. Check engine #20.

 

ECU CODES (Thanks to Drag III Integra)

1 O2A - Oxygen sensor #1
2 O2B - Oxygen sensor #2
3 MAP - manifold absolute pressure sensor
4 CKP - crank position sensor
5 MAP - manifold absolute pressure sensor
6 ECT - water temperature sensor
7 TPS - throttle position sensor
8 TDC - top dead centre sensor
9 CYP - cylinder sensor
10 IAT - intake air temperature sensor
12 EGR - exhaust gas recirculation lift valve
13 BARO - atmospheric pressure sensor
14 IAC (EACV) - idle air control valve
15 Ignition output signal
16 Fuel injectors
17 VSS - speed sensor
19 Automatic transmission lockup control valve
20 Electrical load detector
21 VTEC spool solenoid valve
22 VTEC pressure valve
23 Knock sensor
30 Automatic transmission A signal
31 Automatic transmission B signal
36 traction control found on JDM ecu's
41 Primary oxygen sensor heater
43 Fuel supply system
45 Fuel system too rich or lean
48 LAF - lean air fuel sensor
54 CKF - crank fluctuation sensor
58 TDC sensor #2
61 Primary oxygen sensor
63 Secondary oxygen sensor
65 Secondary oxygen sensor heater
67 Catalyst low efficiency. (same as P0420)
70 Automatic Transmission Malfunction w/AT Controls
71 random misfire cylinder 1
72 random misfire cylinder 2
73 random misfire cylinder 3
74 random misfire cylinder 4
80 Exhaust Gas Recirculation insufficient flow detected
86 ECT Sensor (Engine Coolant Temperature) circuit range / performance problem
90 Evaporative Emission Control System leak detected in the fuel tank area
91 Evaporative Emission Control System insufficient purge flow

 

Not sure I understand, "No heat and car has an idle", what do you mean car has no heat, and what does, "car has an idle" mean.

Are you talking about engine temp. or cabine heat? 94

 

No heat as in when I turn the heater on, it's just blowing cool air even if the car has been running for awhile. As for the idle, it'll idle from 1000 to 1500.

 

I went ahead and reset the ECU and now there's no check engine like. Not sure what and why it was throwing out that code.

 

Check the heater control valve... http://www.hondaautomotiveparts.com/...y5=WATER+VALVE #2, it is not uncommon for the valve or the control cable to them going bad.

The other possibility is you have an "airlock", [air in the cooling system. 94

 

How would I go about in checking the valve? Would that have to be taken to a shop?

 

Are both your heater hoses hot? If so you may have an issue inside with the blend doors
If one is hot and the other not it could be your heater core blocked or your heater control valve is stuck closed.
How did you bleed the cooling system?

http://www.fixya.com/cars/t4019997-1..._lxi_broke_hot

 

You should be able to see the lever move as the temp. control is moved from hot to cold, also when temp. control is on hot the hose on both sides of the valve will be hot, [assuming engine temp. is up].

You can also just remove the valve and just eyeball it to see if it opens and closes when you move the lever.94