Coolant Sensor? JDM ITR

voltageGSR · Post by **voltageGSR** » Sun Nov 02, 2003 9:50 pm

Hey guys
Swapped in a '99 JDM ITR into my '00 GSR (hydrolocked engine).
Used orginal GSR wiring harness and USDM P73 Ecu.

Solved all sensor problems except for coolant sensor.
The people that did the swap could not figure out where to plug
in the coolant sensor. Told me I would have to get something
machined to make it fit into some random housing...no idea what
they talking about.

Problem is that its tripping the code of course; and the car is
not running correctly becuase of that.

Anyone have a solution to this problem?

Help would be much apperciated. Thanks in advance.

Peace.

DaX · Post by **DaX** » Mon Nov 03, 2003 12:32 pm

Coolant temp sensor may need to be located in the thermostat housing. You may need to pick up a thermostat housing with a sensor in it. It's what I had to do for my swap. The B18A1's coolant temp sensor is located on the back of the block, but once I installed the thermostat housing with the sensor, the harness plugged right up.

voltageGSR · Post by **voltageGSR** » Mon Nov 03, 2003 1:07 pm

I still have my hydrolocked GSR engine; could I take that
thermostat housing and swap it with the type R one?
Or is there a place on the type R engine I can plug that sensor into..
I guess I didn't follow the end part!

Thanks for your help..its nice to have someone help thats done
this stuff.

Peace
Ishaq

DaX · Post by **DaX** » Tue Nov 04, 2003 7:25 am

Correct. Swap in your GSR thermostat housing [it should have the sensor on it] and it should plug right into your harness.

The last part of my previous post is just telling you where the Type-R's coolant temp sensor is located. It's a plug on the back of the block near the oil filter, and will just remain unplugged.

voltageGSR · Post by **voltageGSR** » Tue Nov 04, 2003 7:31 am

thanks so much, thats very helpful.
1. My GSR harness cannot plug into the current type r coolant sensor? correct?
2. The coolant sensor is attached to the wiring harness I believe; I was
told that the "plug" was the coolant sensor, were the wrong? They just
said that the coolant sensor was unable to be pluged into the type R engine from my GSR harness.
3. How hard is it to swap the thermostat housing; and do you have
any warnings or percautions. Probably have to pick up a gasket for
that before I do it.
4. Any websites with diagrahms of this stuff? I'm a visual person

5. After I do the swap, how do I reset my ecu so no engine check light?

Hey thanks again for sharing your insight..its so helpful.

Peace
Ishaq

DaX · Post by **DaX** » Wed Nov 05, 2003 7:02 am

1. It IS possible for your harness to plug into the Type-R coolant sensor, you'd just have to solder in extra lengths of wire for the plug on the harness to reach the sensor. In my opinion this is too much effort.

2. The part on the wiring harness is only the plug [unless they left the sensor plugged in and removed it from the thermostat housing]. Look on your GSR thermostat housing. You should see the sensor screwed into the housing.

3. The best way to change the thermostat housing is to remove the starter and the air intake first to gain more access. Be sure to drain your coolant, or you'll be getting it everywhere. It's just two bolts [10 or 12 mm], and I would replace the thermostat and the gasket while you're there, unless it's been done recently.

4. Not sure on the websites. You might want to do a search on the board at http://www.honda-tech.com on thermostat housing.

5. To reset your ECU, you can either unhook the battery for 10 to 15 seconds, or even easier, open your underhood fuse box and remove the 7.5A spare fuse for 10-15 seconds, then replace it.

voltageGSR · Post by **voltageGSR** » Sat Nov 29, 2003 1:57 pm

DaX
So still didn't solve this stupid problem..
tried getting the thermostat housing off of the GSR but the
idiots took the engine apart to get some parts off of it and i can't find
it anywhere..

so i extended the wiring harness; but i can't find the plug on the type
R engine anywhere; looked from underneath and over. There is a
"plug" type piece near the oil filter but it doesnt' have threads to
screw the sensor in so that can't be it; so I have no idea where
on this type R engine i'm supposed to plug this sensor into ....
I feel stupid asking you but any suggestion on how to find this?
I looked for repair manuals that may show me where this is but
can't find anything on a JDM type r...

help a brother out; this engine light is pissin me off. Plus my VTEC
won't kick in; i'm thinkin its cause the ECU went into SAFE mode with
the check engine...

Peace.

voltageGSR · Post by **voltageGSR** » Sat Nov 29, 2003 2:05 pm

I have taken PICTURES of what I am talking about:

http://briefcase.yahoo.com/ishaqsyed@sbcglobal.net
under "My Documents"

I am pretty sure I am supposed to unscrew this hex bolt and
screw in the coolant sensor..but wanted to check with you on how
to get this bolt off correctly.

Thanks.

DaX · Post by **DaX** » Mon Dec 01, 2003 7:24 am

Give me a little bit to think about this...and to look at my engine and see what that plug on the back of the engine is for. Now that I actually see the sensor, I'm thinking maybe that's the one for the head?

voltageGSR · Post by **voltageGSR** » Mon Dec 01, 2003 10:43 am

well that hex bolt thing i took pictures of is on the back of the
block like you said; right next to the oil filter. i couldn't find anything
else that looked like that might work..

i am not sure though how that "touches" coolant; since thats what
that plug is suppsed to go into..since its on the back of the block..

let me know though what you think; thanks again for your help.
peace.

voltageGSR · Post by **voltageGSR** » Mon Dec 01, 2003 10:44 am

and the only reason I just went along to think that was the coolant
sensor is becuase thats what the dealership told me (but they didn't
seem that smart) - and becuase they said that was the
code that the ecu was tripping...

DaX · Post by **DaX** » Mon Dec 01, 2003 2:09 pm

Do you know what code the ecu is throwing? that would help greatly...

voltageGSR · Post by **voltageGSR** » Mon Dec 01, 2003 2:45 pm

the dealership told me the specific code but i'm forgeting it now;
its definately for the "coolant sensor" becuase i looked it up on
a few sites to verify at that time.

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