thanks thebehonda.

answer:

If you disconnect the temp sensor at the head, does the gauge fall back to cold?

YES, already i did, and the gauge fall completly down, like cool.

Also, what color wire do you have connected to the temp sensor?

ok, this a few dificult to describe, my car is 93 and has been many time running, i think the real color is yellow with a line blue or green over there. i checked all the line, step by step into the harness, at the end install a tester ohmeter betwen the two terminal points and register 0,102 ohm digital tester. and checked the panel too.

Did it start doing this just after the engine swap, or all of the sudden?

NO, my car have original engine since a bougth, is japanese. i did not do a swap.

first time, i saw a hot condition almost a medium hot to 3/4 when was in a stop signal (example), after that return to almost 1/2 position in gauge. after that mantain 3/4 all the time, here began my troubles, but i identifiqued that the engine was in correct temperature, i think so.

When you let the engine warm up until the fan comes on, do both the upper and lower radiator hoses feel pretty close to the same temperature?

I already changed thermostat part. look diagnostic acquired.

A- i started the engine in cool, the gauge is completly down. 0 time.

B- the gauge move to 1/4 at 2 minutes.

C- the gauge move to 1/2 at 10 minutes.

D- the gauge move to up almost red line at 18 minutes.

E- the fan start running at 24:00 minutes.

G- the fan stop running at 24:52 minutes. the gauge came down 1/8.

H- temperature increase to D again at 26:10 minutes.

I- cicles repeated since D, almost the same with diference times.

Do you have an "point and shoot" thermometer so you can check the engine temperature at various locations? If not, a regular thermometer submerged in the radiator fill hole will verify the coolant temp.

No sorry, i did not find anyone. i did: run engine 30 minutes and stop, living engine get cool a few, by 2 minutes, open radiator (no problem to open cap, no pressure, no gas, just a few liquid spended) and introduce a normal thermometer, it show 120° F, the maximus at thermometer is 150° F.

i did not try it again seen to be dangerous in case of the cristal blow up.

How about the radiator hoses? I have seen radiators clog causing improper flow from the top hose to the bottom.

i wrote at begining " i changed the radiator", so it´s not correspond at case, but thanks is a possibility to take.

i think, i have not change the water pump, because i observe the water flow ok. will the pump work impropely.

As for testing the sending unit, CLICK HERE The above readings you gave me don't correspond with the readings on this chart. Did you buy the sending unit from Honda or an auto parts store?

A- i can not open the short cut, so can you send me the link.

B- i read the technical manual of honda 92-95, and are to similar to my reading, but i never found the correspond manual with B16 A9, just D16, so thought are similars in part.

C- i bought it in ower honda dealer& distributor representative in my country, because i live in Costa Rica.

let me explain a few of me, i am electric ingenier, but my hobbie is the mechanical cars, i don´t have to much experience, but i research a lot of possible when i get something like this, so be patient with me please.

Is the temperature pretty close to the same on both hoses?

when the engine start between 3 or 5 minutes only the down hose in radiator is hot, at 10 minutes the up hose began to increase temperature until the fan run the first time. after that if i stop the engine, both hoses are at same temperature.

i knew that because i passed sunday making test at radiator.

image: well is the same, that i have in my manual, so i made that test, is ok too, when i realized this test, was when i decided to follow all harness in order to find a damage in cables.

i figure out, in my manual is a D16 engine instead of B16 A9 JDM, but my readings was lower than in the image. and are opposed to the failure.

well in order to test correctly the temperature, will i need a special tool? because the thermometer was old one in my father house, that i used, if this is the case i need to find or buy one. i don´t want to take a risk now, is hot water and pressure.

i asked to a friend to use my old parts, in a civic hacthback D16 Y8 Vtec, and are working, just a few difference in gauge metering, is showing low temperature than his parts, but without heatings troubles.

about my gauge metering, is second hand, i couldn´t find a new one, only if i ask by representative honda to carry from japam. and i just need to confirm that mine is in bad condition. in my friend car is not equal, but the old one work equal. SO!!

i have a headache with this.

sorry if i introduce you in this too, but i need help really, and you are the best.

sunday at night, i decided to running engine until stop by hot temperature but run almost 2 hours without trouble, so i stoped and go bed tired at the end.

will ECU produce this failure?

ok, i know who has a "point and shoot infrared" FLUKE, but i do not know the maximun of temperature possible to check, he use it in air conditioners. i will visit today later.

send me a places of points to check in the engine when reach hot temperature. in this form you will completly sure of my measurements.

i appreciate your professional interest, thank very much. i will in contact.

ok, will be tomorow if i get the instrument today, thank very much. what now?

HI MR. .... i don´t know your name.

yesterday went to look the FLUKE, but is only in range -70° F to 85°F is small tester for air conditioner only.

so i going to look for one today, i will be in contact.

my best regards.

P.D. tell me if i push ACCEPT now, will i continue talking to you?

ok

just a observation, if you are thinking in check and fix the head or cilinder cap, in my first part i wrote " i refinished the head in a precision taller"; (Rectifed in precision workshop);i did that, because the mechanical man in HONDA/CR told to do that, was the first tink i did by recomendation of my mechanical man.

but it did not work, since this, almost a month ago, i have been doing many checks a test on the car in order to fix it. Now i am hoping you can help, i don´t want to loose this car in special, is partner for me, has run many kilometers with me.

I have in mind to do a swap as a last resort.

thanks Chuck. i did not see your name in your answer.

one question, is about honda partner CRX 87, with which the steering wheel can be replaced? if you can answer over here is just a question no more.

yes

i am late sorry, but i have now the information request. i will included by diferents pictures, i think are clearly.

i used a METEX Temp. by link reader, is like a thin cable with sensor in a xtreme.

i hope this are more information for you

well, when i was looking for new gauge, just a second hand i got, but this one, was instaled in a honda 95 automatic japaness version too. can it be diferent? in C° or F°, this look like the same.

what other form i have to confirm the temperature instead of use the gauge in my dash!

manual

ok

yoy too, thnaks a lot.

hi chuck, some days we don´t talk.

well, my car is working in the same condition and he doesn´t stop run over the way.

i think may be the panel is failing, i need to find some iqual to interchange for.

do you find something about cable and guage information, relationing at model?

my best regards.

yes my panel original is with RPM gauge, but i couldn´t get one yet, so i continue look for one.

good night chuck, i hope you read this.

i finished today to fix my car, is running like new. First at all, i send to you my sincerily apologies, you was right since the beginning.

i found a second guy with a car identiquly at mine and he was very attend to interchange parts.

the worst parts were: the thermostat switch, and the temperature sensor bulb. those were new, but was working incorrectly i guest, for that reazon i bought diferent brand "YENBO" germany, it fix like a mercedez, and are more exacts.

well, at the end i ought to change the fuel pump, because a diference in speed ralenty was imposible to fix, so this fixed ok.

well i aprecciated your time and patient, next time i will be more positive and follow your tips.

thanks very much.