Sunday, August 29, 2010
Friday, August 27, 2010
Tuesday, August 24, 2010
FANC (A27) OBDa (96-98 Civic)
Best damn explanation.
On USDM G2s there is a "Radiator Fan Control Module" (RFCM = Radiator Fan Control, FANC A20 OBD2a pin-out) it turns on the radiator fan when A/C is on and/or if engine oil temp is too high, the "Engine Oil Temperature Switch" can turn the radiator fan on, [through the RFCM] even when ignition is off.
With that said, the "Engine Coolant Temperature Switch" (ECTS) will trigger the "Radiator Fan Relay" (RFR) any time the coolant overheats, [about 194 degrees F].
http://www.honda-tech.com/showthread.php?t=2757123
If radiator fan is not turning on...
Test for power at the fan, [white to blue/black on fan] fuse 12 - 15A, [hot at all times].
Test for power at Radiator Fan Relay. [yellow/black to black/yellow at relay] fuse 21 - 15A, [hot in run].
Test for ground at relay, [black].
Use a jumper to supply a ground to the blue lead at Relay, [ground for fan] does fan turn on?
Use the jumper to supply a ground to the yellow/green lead at relay, [from ECTS] does fan turn on?
The 94-98 Integra’s do not have the RFCM (=Radiator Fan Control, FANC A20 OBD2a pin-out) and the ground is constant at the radiator fan, the 12V is switched by the RFR and radiator fan operation is controlled by the ECU/ECM when A/C is on, but again it is controlled directly by the ECTS, [through RFR] when engine coolant temperature reaches 196-203 degrees F.
The tests are about the same...
Check for a constant ground at the rad fan, [black].
Test for 12V at the relay 94-97 is fuse 33 - 20A, [hot at all times] sorry color is not available and the black/yellow lead at relay fuse 13 - 7.5A, [hot in run].
Use a jumper to supply 12V to the fan lead, [black/red] at the relay, does fan turn on?
Use a jumper to supply a ground, [ign. must be on] to the ECTS lead at the relay, [green], does fan turn on?
A 98 is a little harder as relay is in engine bay fuse box, but test for ground at the rad fan, [black].
Test for power at the relay, [pull relay] there should be two 12V terminals, one of the bigger ones fuse 57 - 20A, [hot at all times] a smaller terminal will also be 12V, fuse 17 - 7.5A, [hot in run].
Use a jumper to connect the two bigger terminals in the relay socket, does fan turn on?. 94
On USDM G2s there is a "Radiator Fan Control Module" (RFCM = Radiator Fan Control, FANC A20 OBD2a pin-out) it turns on the radiator fan when A/C is on and/or if engine oil temp is too high, the "Engine Oil Temperature Switch" can turn the radiator fan on, [through the RFCM] even when ignition is off.
With that said, the "Engine Coolant Temperature Switch" (ECTS) will trigger the "Radiator Fan Relay" (RFR) any time the coolant overheats, [about 194 degrees F].
http://www.honda-tech.com/showthread.php?t=2757123
If radiator fan is not turning on...
Test for power at the fan, [white to blue/black on fan] fuse 12 - 15A, [hot at all times].
Test for power at Radiator Fan Relay. [yellow/black to black/yellow at relay] fuse 21 - 15A, [hot in run].
Test for ground at relay, [black].
Use a jumper to supply a ground to the blue lead at Relay, [ground for fan] does fan turn on?
Use the jumper to supply a ground to the yellow/green lead at relay, [from ECTS] does fan turn on?
The 94-98 Integra’s do not have the RFCM (=Radiator Fan Control, FANC A20 OBD2a pin-out) and the ground is constant at the radiator fan, the 12V is switched by the RFR and radiator fan operation is controlled by the ECU/ECM when A/C is on, but again it is controlled directly by the ECTS, [through RFR] when engine coolant temperature reaches 196-203 degrees F.
The tests are about the same...
Check for a constant ground at the rad fan, [black].
Test for 12V at the relay 94-97 is fuse 33 - 20A, [hot at all times] sorry color is not available and the black/yellow lead at relay fuse 13 - 7.5A, [hot in run].
Use a jumper to supply 12V to the fan lead, [black/red] at the relay, does fan turn on?
Use a jumper to supply a ground, [ign. must be on] to the ECTS lead at the relay, [green], does fan turn on?
A 98 is a little harder as relay is in engine bay fuse box, but test for ground at the rad fan, [black].
Test for power at the relay, [pull relay] there should be two 12V terminals, one of the bigger ones fuse 57 - 20A, [hot at all times] a smaller terminal will also be 12V, fuse 17 - 7.5A, [hot in run].
Use a jumper to connect the two bigger terminals in the relay socket, does fan turn on?. 94
Monday, August 23, 2010
Tuesday, August 17, 2010
.bmp)
Monday, August 16, 2010
45mm 48mm 55mm 81mm (Clearance 40 thousandth mm)
45mm Crank Rod Journal Diameter
48mm Rods Big End Diameter
55mm Crank Main Journal Diameter
81mm Bore
Clearance (Thousands mm)
24-42 Main 1,2,4 & 5
30-48 Main 3
32-50 Rods
10-40 Pistons
48mm Rods Big End Diameter
55mm Crank Main Journal Diameter
81mm Bore
Clearance (Thousands mm)
24-42 Main 1,2,4 & 5
30-48 Main 3
32-50 Rods
10-40 Pistons
Sunday, August 15, 2010
Junk2 TB 70mm
The clearance between the pulley and shaft is poor (a a screw a hole that is too big - the metal also is soft), causing rocking - net result is that butter wont close, even through the TPS shows 0%. 2 Weeks hassle.
Wednesday, August 4, 2010
Idle - Hondata
Setting the Idle Speed
Top Previous Next
To adjust the idle speed:
1. Warm up the engine.
2. Set the idle speed to 850 rpm and move the duty cycle adjustment to the middle.
3. Unplug the idle valve.
4. Adjust the bypass screw until the engine runs at 450 rpm. If you can not reduce the idle to 450 rpm, then you have an air leak. Fix this before proceeding. If the engine will not run with the idle valve disconnected then your bypass port is clogged. Fix this before proceeding.
5. Plug the idle valve back in.
6. Clear the idle valve error. You should now get a smooth idle at 850 rpm.
7. Increase the engine speed to 2500 - 3000 rpm and abruptly let off the throttle.
If the engine speed dips below 850 rpm, move the duty cycle slider to the right.
If the engine speed hangs above 850rpm for some time, move the duty cycle slider to left.
Some engines prefer 900 or 950 rpm idle speed.
Top Previous Next
To adjust the idle speed:
1. Warm up the engine.
2. Set the idle speed to 850 rpm and move the duty cycle adjustment to the middle.
3. Unplug the idle valve.
4. Adjust the bypass screw until the engine runs at 450 rpm. If you can not reduce the idle to 450 rpm, then you have an air leak. Fix this before proceeding. If the engine will not run with the idle valve disconnected then your bypass port is clogged. Fix this before proceeding.
5. Plug the idle valve back in.
6. Clear the idle valve error. You should now get a smooth idle at 850 rpm.
7. Increase the engine speed to 2500 - 3000 rpm and abruptly let off the throttle.
If the engine speed dips below 850 rpm, move the duty cycle slider to the right.
If the engine speed hangs above 850rpm for some time, move the duty cycle slider to left.
Some engines prefer 900 or 950 rpm idle speed.
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