I put a D16y8 in a 89 Si Hatch.

Been running fine all winter, now that its hot outside, it will overheat when in traffic. Problem is, the fan doesn't kick on. Jumped 12v to the fan to check to see if thats the problem and it works fine. Connector on bottom of fan is working too. No blown fuses also.

Heres the issue. On the back left side of the head, is where the lower radiator hose connects, there is on that connection joint, a TAN colored sensor with nothing pluged up. Im thinking thats the sensor that tells the fan to kick on and off. What goes there, and where do the wires run more importantly.

Thank for the help.

 

i had this same problem on my zc and my b16. The fan was plugged into the wrong plug. double check it. then aslo check the plug it plugs into connects to the correct sensor. good luck

 

Have you tried swapping the fan relay (located by air intake)?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by groundedcivic91 &raquo;</TD></TR><TR><TD CLASS="quote">On the back left side of the head, is where the lower radiator hose connects, there is on that connection joint, a TAN colored sensor with nothing pluged up. Im thinking thats the sensor that tells the fan to kick on and off. .</TD></TR></TABLE>

Yes that should be the fan switch, if its located on the metal hose or near the thermostat #10 or #8 (not to familiar with the zc motor).


Found this thread hope it helps out Search is your friend id=508686

ps if you still cant get it fixed ill look in the honda electrical book i borrowed from my cousin (I love being related to a certified honda tech)

 

i had sameprob after i put my b16 in. i just ran a new fan to a toggle switch onmy dash so i can switch it on when i think it needs to be on.hot weather ,traffic,etc....i know its on when ihit that switch...thats what counts.

 

The coolant temp switch on the tstat housing(on the y8) is a bit diff from the one on the a6. You will have to repin the plug from your si harness to work with that sensor. The cooling fan relays are a common prob on our cars so make sure to test this as well. If you need anything PM me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bluecrxsi &raquo;</TD></TR><TR><TD CLASS="quote">i had sameprob after i put my b16 in. i just ran a new fan to a toggle switch onmy dash so i can switch it on when i think it needs to be on.hot weather ,traffic,etc....i know its on when ihit that switch...thats what counts. </TD></TR></TABLE>

thats one way to do it, i have mine connected the right way to the CTS (coolant temp. switch sensor) know its on when the needle goes halfway across the temp gauge

 

switch? mines on all the time.

Ben

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ben Ogle &raquo;</TD></TR><TR><TD CLASS="quote">switch? mines on all the time.

Ben</TD></TR></TABLE>

mine too

 

Theres a device...can't remeber the name...kinda like a poly switch, that basically as it gets hot it either closes or opens (depending what kind you get). You could attach it to your radiator or something that gets hot and then at a certain tempature the switch closes and turns the fan on. But once it cools down it open the switch and fan turns off.

Anyways these switches are sold with certain activating temperatures, like 75*C 90*C 110*C. Great way to make a safety net. I'll look it up in the Digikey catalog when I get home....there pretty cheap.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Westrock2000 &raquo;</TD></TR><TR><TD CLASS="quote">Theres a device...can't remeber the name...kinda like a poly switch, that basically as it gets hot it either closes or opens (depending what kind you get). You could attach it to your radiator or something that gets hot and then at a certain tempature the switch closes and turns the fan on. But once it cools down it open the switch and fan turns off.

Anyways these switches are sold with certain activating temperatures, like 75*C 90*C 110*C. Great way to make a safety net. I'll look it up in the Digikey catalog when I get home....there pretty cheap.</TD></TR></TABLE>

isnt that what the rad fan temp switch does anyways?

 

The fan switch on the D16A6 is on the back of the block, right next to the oil pressure dummy light switch. They're both close to the oil filter. The connection to the fan switch is a large black rubber boot, with 2 push on connectors inside. Extend the 2 wires from this black rubber boot, so that they reach the thermoswitch on the thermostat housing, and plug it up.

 

you don't need any relays

just contect one wire from the fan to one wire on the switch then the other wire on the switch to gorund or + then connect the other wire of the fan to + or ground.(you'll have to see if it pushes or pulls air before you figure out whats + or -.

The switch will turn the fan on and off.